from:"Eric Dumazet"

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

2018-04-30 Thread Eric Dumazet

And original commit adding the infrastructure linked to this thread ;)

https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-
next.git/commit/?id=3a9b76fd0db9f0d426533f96a68a62a58753a51e

Then the official helper was added in

https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-
next.git/commit/?id=c9f1f58dc2eba550f208809d272bf0b14f41edba

Thanks everybody

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1670041

Title:
  Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless
  1535)

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Artful:
  In Progress
Status in linux source package in Bionic:
  In Progress

Bug description:
  Update (2017-05-20):
  Kalle Valo suggested a hack which increased client -> AP TCP performance - so 
it does not look like a firmware issue as I thought originally, rather an 
ath10k driver issue:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/11
  https://patchwork.kernel.org/patch/5784701/ (the hack is at the bottom)
  Tested here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/17

  Update: added some forensics in the paste (a long read):
  http://paste.ubuntu.com/24118478/

  -

  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  qca6174 hw3.2 target 0x0503 chip_id 0x00340aff sub 1a56:1535

  Original message:
  --
  I experience a very poor 802.11ac performance of a QCA6174 Wireless card 
(Killer Wireless 1535).

  This is a dev version of Zesty with a recently released 4.10 kernel:

  uname -r
  4.10.0-9-generic

  dpkg -l linux-firmware | grep ii
  ii  linux-firmware 1.163all  Firmware for Linux kernel drivers

  lspci -vvv:

  ...
  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network 
Adapter
  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
SERR- 
  Kernel driver in use: ath10k_pci
  Kernel modules: ath10k_pci

  -

  Testing wireless speed with RT-87U 802.11ac router shows that the
  speed is only 27.3 megabits per second which is very low for an
  802.11ac card:

  iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [  3] local 10.10.10.78 port 48930 connected with 10.10.10.1 port 5001
  [ ID] Interval   Transfer Bandwidth
  [  3]  0.0-10.0 sec  32.6 MBytes  27.3 Mbits/sec

  

  For comparison, on the same network (from the same distance to the
  router) I have the following result with an Intel's card (on a 4.8
  kernel, different laptop):

  UX32LN:~$ lspci | grep 7260
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

  UX32LN:~$ iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [ 3] local 10.10.10.208 port 37196 connected with 10.10.10.1 port 5001
  [ ID] Interval Transfer Bandwidth
  [ 3] 0.0-10.1 sec 237 MBytes 198 Mbits/sec
  administrator@UX32LN:~$ lsp
  lspci lspcmcia lspgpot

  200 Mbps is much better.

  ---

  Back to the problematic card:

  Booted 16.04.2 with the rolling HWE kernel 4.8:

  journalctl -k | grep -i ath
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: enabling device ( 
-> 0002)
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: pci irq msi 
oper_irq_mode 2 irq_mode 0 reset_mode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/pre-cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: could not fetch 
firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: qca6174 hw3.2 target 
0x0503 chip_id 0x00340aff sub 1a56:1535
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: kconfig debug 0 
debugfs 1 tracing 1 dfs 0 testmode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: firmware ver 
WLAN.RM.2.0-00180-QCARMSWPZ-1 api 4 features wowlan,ignore-otp,no-4

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

2017-07-25 Thread Eric Dumazet

Sorry if I was not clear, but I would like to combine #42 and #44
experiments.

Ie making sure that even with BBR on linux-4.3-rc1/rc2 (without FQ
packet qdisc), we can simply tweak TCP Small queue threshold as #42
results would suggest to resolve this bug.

Thanks !

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1670041

Title:
  Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless
  1535)

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Update (2017-05-20):
  Kalle Valo suggested a hack which increased client -> AP TCP performance - so 
it does not look like a firmware issue as I thought originally, rather an 
ath10k driver issue:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/11
  https://patchwork.kernel.org/patch/5784701/ (the hack is at the bottom)
  Tested here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/17

  Update: added some forensics in the paste (a long read):
  http://paste.ubuntu.com/24118478/

  -

  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  qca6174 hw3.2 target 0x0503 chip_id 0x00340aff sub 1a56:1535

  Original message:
  --
  I experience a very poor 802.11ac performance of a QCA6174 Wireless card 
(Killer Wireless 1535).

  This is a dev version of Zesty with a recently released 4.10 kernel:

  uname -r
  4.10.0-9-generic

  dpkg -l linux-firmware | grep ii
  ii  linux-firmware 1.163all  Firmware for Linux kernel drivers

  lspci -vvv:

  ...
  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network 
Adapter
  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
SERR- 
  Kernel driver in use: ath10k_pci
  Kernel modules: ath10k_pci

  -

  Testing wireless speed with RT-87U 802.11ac router shows that the
  speed is only 27.3 megabits per second which is very low for an
  802.11ac card:

  iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [  3] local 10.10.10.78 port 48930 connected with 10.10.10.1 port 5001
  [ ID] Interval   Transfer Bandwidth
  [  3]  0.0-10.0 sec  32.6 MBytes  27.3 Mbits/sec

  

  For comparison, on the same network (from the same distance to the
  router) I have the following result with an Intel's card (on a 4.8
  kernel, different laptop):

  UX32LN:~$ lspci | grep 7260
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

  UX32LN:~$ iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [ 3] local 10.10.10.208 port 37196 connected with 10.10.10.1 port 5001
  [ ID] Interval Transfer Bandwidth
  [ 3] 0.0-10.1 sec 237 MBytes 198 Mbits/sec
  administrator@UX32LN:~$ lsp
  lspci lspcmcia lspgpot

  200 Mbps is much better.

  ---

  Back to the problematic card:

  Booted 16.04.2 with the rolling HWE kernel 4.8:

  journalctl -k | grep -i ath
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: enabling device ( 
-> 0002)
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: pci irq msi 
oper_irq_mode 2 irq_mode 0 reset_mode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/pre-cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: could not fetch 
firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: qca6174 hw3.2 target 
0x0503 chip_id 0x00340aff sub 1a56:1535
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: kconfig debug 0 
debugfs 1 tracing 1 dfs 0 testmode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: firmware ver 
WLAN.RM.2.0-00180-QCARMSWPZ-1 api 4 features wowlan,ignore-otp,no-4addr-pad 
crc32 75dee6c5
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: board_file api 2 
bmi_id N/A crc32 6fc88fe7
  Mar 04 18:28:34 ubuntu kernel:

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

2017-07-06 Thread Eric Dumazet

skb_orphan() is not the way to go.

Can someone try the following patch ?

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 
4e985dea1dd24fdecfbf9b47d51cff698e97cd2f..5f394f2f524f6ac8d8d9bef50a1bfc99397d6724
 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2158,7 +2158,7 @@ static bool tcp_pacing_check(const struct sock *sk)
 }
 
 /* TCP Small Queues :
- * Control number of packets in qdisc/devices to two packets / or ~1 ms.
+ * Control number of packets in qdisc/devices to two packets / or ~4 ms.
  * (These limits are doubled for retransmits)
  * This allows for :
  *  - better RTT estimation and ACK scheduling
@@ -2173,7 +2173,7 @@ static bool tcp_small_queue_check(struct sock *sk, const 
struct sk_buff *skb,
 {
unsigned int limit;
 
-   limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 10);
+   limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 8);
limit = min_t(u32, limit, sysctl_tcp_limit_output_bytes);
limit <<= factor;

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1670041

Title:
  Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless
  1535)

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Update (2017-05-20):
  Kalle Valo suggested a hack which increased client -> AP TCP performance - so 
it does not look like a firmware issue as I thought originally, rather an 
ath10k driver issue:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/11
  https://patchwork.kernel.org/patch/5784701/ (the hack is at the bottom)
  Tested here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/17

  Update: added some forensics in the paste (a long read):
  http://paste.ubuntu.com/24118478/

  -

  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  qca6174 hw3.2 target 0x0503 chip_id 0x00340aff sub 1a56:1535

  Original message:
  --
  I experience a very poor 802.11ac performance of a QCA6174 Wireless card 
(Killer Wireless 1535).

  This is a dev version of Zesty with a recently released 4.10 kernel:

  uname -r
  4.10.0-9-generic

  dpkg -l linux-firmware | grep ii
  ii  linux-firmware 1.163all  Firmware for Linux kernel drivers

  lspci -vvv:

  ...
  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network 
Adapter
  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
SERR- 
  Kernel driver in use: ath10k_pci
  Kernel modules: ath10k_pci

  -

  Testing wireless speed with RT-87U 802.11ac router shows that the
  speed is only 27.3 megabits per second which is very low for an
  802.11ac card:

  iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [  3] local 10.10.10.78 port 48930 connected with 10.10.10.1 port 5001
  [ ID] Interval   Transfer Bandwidth
  [  3]  0.0-10.0 sec  32.6 MBytes  27.3 Mbits/sec

  

  For comparison, on the same network (from the same distance to the
  router) I have the following result with an Intel's card (on a 4.8
  kernel, different laptop):

  UX32LN:~$ lspci | grep 7260
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

  UX32LN:~$ iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [ 3] local 10.10.10.208 port 37196 connected with 10.10.10.1 port 5001
  [ ID] Interval Transfer Bandwidth
  [ 3] 0.0-10.1 sec 237 MBytes 198 Mbits/sec
  administrator@UX32LN:~$ lsp
  lspci lspcmcia lspgpot

  200 Mbps is much better.

  ---

  Back to the problematic card:

  Booted 16.04.2 with the rolling HWE kernel 4.8:

  journalctl -k | grep -i ath
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: enabling device ( 
-> 0002)
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: pci irq msi 
oper_irq_mode 2 irq_mode 0 reset_mode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/pre-cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Dire

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

2017-07-07 Thread Eric Dumazet

Thanks, can you now try :

 limit = max(4 * skb->truesize, sk->sk_pacing_rate >> 8);

Then :

 limit = max(2 * skb->truesize, sk->sk_pacing_rate >> 7);

Then :

 limit = max(4 * skb->truesize, sk->sk_pacing_rate >> 7);

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1670041

Title:
  Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless
  1535)

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Update (2017-05-20):
  Kalle Valo suggested a hack which increased client -> AP TCP performance - so 
it does not look like a firmware issue as I thought originally, rather an 
ath10k driver issue:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/11
  https://patchwork.kernel.org/patch/5784701/ (the hack is at the bottom)
  Tested here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/17

  Update: added some forensics in the paste (a long read):
  http://paste.ubuntu.com/24118478/

  -

  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  qca6174 hw3.2 target 0x0503 chip_id 0x00340aff sub 1a56:1535

  Original message:
  --
  I experience a very poor 802.11ac performance of a QCA6174 Wireless card 
(Killer Wireless 1535).

  This is a dev version of Zesty with a recently released 4.10 kernel:

  uname -r
  4.10.0-9-generic

  dpkg -l linux-firmware | grep ii
  ii  linux-firmware 1.163all  Firmware for Linux kernel drivers

  lspci -vvv:

  ...
  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network 
Adapter
  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
SERR- 
  Kernel driver in use: ath10k_pci
  Kernel modules: ath10k_pci

  -

  Testing wireless speed with RT-87U 802.11ac router shows that the
  speed is only 27.3 megabits per second which is very low for an
  802.11ac card:

  iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [  3] local 10.10.10.78 port 48930 connected with 10.10.10.1 port 5001
  [ ID] Interval   Transfer Bandwidth
  [  3]  0.0-10.0 sec  32.6 MBytes  27.3 Mbits/sec

  

  For comparison, on the same network (from the same distance to the
  router) I have the following result with an Intel's card (on a 4.8
  kernel, different laptop):

  UX32LN:~$ lspci | grep 7260
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

  UX32LN:~$ iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [ 3] local 10.10.10.208 port 37196 connected with 10.10.10.1 port 5001
  [ ID] Interval Transfer Bandwidth
  [ 3] 0.0-10.1 sec 237 MBytes 198 Mbits/sec
  administrator@UX32LN:~$ lsp
  lspci lspcmcia lspgpot

  200 Mbps is much better.

  ---

  Back to the problematic card:

  Booted 16.04.2 with the rolling HWE kernel 4.8:

  journalctl -k | grep -i ath
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: enabling device ( 
-> 0002)
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: pci irq msi 
oper_irq_mode 2 irq_mode 0 reset_mode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/pre-cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: could not fetch 
firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: qca6174 hw3.2 target 
0x0503 chip_id 0x00340aff sub 1a56:1535
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: kconfig debug 0 
debugfs 1 tracing 1 dfs 0 testmode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: firmware ver 
WLAN.RM.2.0-00180-QCARMSWPZ-1 api 4 features wowlan,ignore-otp,no-4addr-pad 
crc32 75dee6c5
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: board_file api 2 
bmi_id N/A crc32 6fc88fe7
  Mar 04 18:28:34 ubuntu kernel: ath10k_pci :3b:00.0: htt-ver 3.26 wmi-op 4

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

2017-07-17 Thread Eric Dumazet

Thanks to all of you for the tests, sorry for the delay, I have been on
vacation last week.

Yes, the plan is to permanently change TCP stack, since TCP Small queue
being very aggressive is no longer needed when FQ packet scheduler or
BBR congestion module is used for TCP.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1670041

Title:
  Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless
  1535)

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Update (2017-05-20):
  Kalle Valo suggested a hack which increased client -> AP TCP performance - so 
it does not look like a firmware issue as I thought originally, rather an 
ath10k driver issue:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/11
  https://patchwork.kernel.org/patch/5784701/ (the hack is at the bottom)
  Tested here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/17

  Update: added some forensics in the paste (a long read):
  http://paste.ubuntu.com/24118478/

  -

  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  qca6174 hw3.2 target 0x0503 chip_id 0x00340aff sub 1a56:1535

  Original message:
  --
  I experience a very poor 802.11ac performance of a QCA6174 Wireless card 
(Killer Wireless 1535).

  This is a dev version of Zesty with a recently released 4.10 kernel:

  uname -r
  4.10.0-9-generic

  dpkg -l linux-firmware | grep ii
  ii  linux-firmware 1.163all  Firmware for Linux kernel drivers

  lspci -vvv:

  ...
  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network 
Adapter
  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
SERR- 
  Kernel driver in use: ath10k_pci
  Kernel modules: ath10k_pci

  -

  Testing wireless speed with RT-87U 802.11ac router shows that the
  speed is only 27.3 megabits per second which is very low for an
  802.11ac card:

  iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [  3] local 10.10.10.78 port 48930 connected with 10.10.10.1 port 5001
  [ ID] Interval   Transfer Bandwidth
  [  3]  0.0-10.0 sec  32.6 MBytes  27.3 Mbits/sec

  

  For comparison, on the same network (from the same distance to the
  router) I have the following result with an Intel's card (on a 4.8
  kernel, different laptop):

  UX32LN:~$ lspci | grep 7260
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

  UX32LN:~$ iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [ 3] local 10.10.10.208 port 37196 connected with 10.10.10.1 port 5001
  [ ID] Interval Transfer Bandwidth
  [ 3] 0.0-10.1 sec 237 MBytes 198 Mbits/sec
  administrator@UX32LN:~$ lsp
  lspci lspcmcia lspgpot

  200 Mbps is much better.

  ---

  Back to the problematic card:

  Booted 16.04.2 with the rolling HWE kernel 4.8:

  journalctl -k | grep -i ath
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: enabling device ( 
-> 0002)
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: pci irq msi 
oper_irq_mode 2 irq_mode 0 reset_mode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/pre-cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: could not fetch 
firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: qca6174 hw3.2 target 
0x0503 chip_id 0x00340aff sub 1a56:1535
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: kconfig debug 0 
debugfs 1 tracing 1 dfs 0 testmode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: firmware ver 
WLAN.RM.2.0-00180-QCARMSWPZ-1 api 4 features wowlan,ignore-otp,no-4addr-pad 
crc32 75dee6c5
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: board_file api 2 
bmi_id N/A crc32 6fc88fe7
  Mar 04 18:28:34 ubuntu k

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

2017-07-17 Thread Eric Dumazet

Kirill, would it be possible to run again your experiments, but using
bbr congestion control ?

Note that you should use 4.13-rc1 so that following commit is included :
commit 218af599fa635b107cfe10acf3249c4dfe5e4123 ("tcp: internal implementation 
for pacing")
 

lpaa5:~# modprobe tcp_bbr
lpaa5:~# cat /proc/sys/net/ipv4/tcp_available_congestion_control
cubic reno bbr
lpaa5:~# cat /proc/sys/net/ipv4/tcp_congestion_control
cubic
lpaa5:~# echo bbr >/proc/sys/net/ipv4/tcp_congestion_control
lpaa5:~# cat /proc/sys/net/ipv4/tcp_congestion_control
bbr



-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1670041

Title:
  Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless
  1535)

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Update (2017-05-20):
  Kalle Valo suggested a hack which increased client -> AP TCP performance - so 
it does not look like a firmware issue as I thought originally, rather an 
ath10k driver issue:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/11
  https://patchwork.kernel.org/patch/5784701/ (the hack is at the bottom)
  Tested here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/17

  Update: added some forensics in the paste (a long read):
  http://paste.ubuntu.com/24118478/

  -

  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  qca6174 hw3.2 target 0x0503 chip_id 0x00340aff sub 1a56:1535

  Original message:
  --
  I experience a very poor 802.11ac performance of a QCA6174 Wireless card 
(Killer Wireless 1535).

  This is a dev version of Zesty with a recently released 4.10 kernel:

  uname -r
  4.10.0-9-generic

  dpkg -l linux-firmware | grep ii
  ii  linux-firmware 1.163all  Firmware for Linux kernel drivers

  lspci -vvv:

  ...
  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network 
Adapter
  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
SERR- 
  Kernel driver in use: ath10k_pci
  Kernel modules: ath10k_pci

  -

  Testing wireless speed with RT-87U 802.11ac router shows that the
  speed is only 27.3 megabits per second which is very low for an
  802.11ac card:

  iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [  3] local 10.10.10.78 port 48930 connected with 10.10.10.1 port 5001
  [ ID] Interval   Transfer Bandwidth
  [  3]  0.0-10.0 sec  32.6 MBytes  27.3 Mbits/sec

  

  For comparison, on the same network (from the same distance to the
  router) I have the following result with an Intel's card (on a 4.8
  kernel, different laptop):

  UX32LN:~$ lspci | grep 7260
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

  UX32LN:~$ iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [ 3] local 10.10.10.208 port 37196 connected with 10.10.10.1 port 5001
  [ ID] Interval Transfer Bandwidth
  [ 3] 0.0-10.1 sec 237 MBytes 198 Mbits/sec
  administrator@UX32LN:~$ lsp
  lspci lspcmcia lspgpot

  200 Mbps is much better.

  ---

  Back to the problematic card:

  Booted 16.04.2 with the rolling HWE kernel 4.8:

  journalctl -k | grep -i ath
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: enabling device ( 
-> 0002)
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: pci irq msi 
oper_irq_mode 2 irq_mode 0 reset_mode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/pre-cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: could not fetch 
firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: qca6174 hw3.2 target 
0x0503 chip_id 0x00340aff sub 1a56:1535
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: kconfig debug 0 
debugfs 1 tracing 1 dfs 0 testmode 0
  Mar 04 18:

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

2017-07-24 Thread Eric Dumazet

Please do not compare UDP and TCP, this is absolutely useless.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1670041

Title:
  Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless
  1535)

Status in linux package in Ubuntu:
  In Progress
Status in linux source package in Zesty:
  In Progress

Bug description:
  Update (2017-05-20):
  Kalle Valo suggested a hack which increased client -> AP TCP performance - so 
it does not look like a firmware issue as I thought originally, rather an 
ath10k driver issue:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/11
  https://patchwork.kernel.org/patch/5784701/ (the hack is at the bottom)
  Tested here:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1670041/comments/17

  Update: added some forensics in the paste (a long read):
  http://paste.ubuntu.com/24118478/

  -

  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  qca6174 hw3.2 target 0x0503 chip_id 0x00340aff sub 1a56:1535

  Original message:
  --
  I experience a very poor 802.11ac performance of a QCA6174 Wireless card 
(Killer Wireless 1535).

  This is a dev version of Zesty with a recently released 4.10 kernel:

  uname -r
  4.10.0-9-generic

  dpkg -l linux-firmware | grep ii
  ii  linux-firmware 1.163all  Firmware for Linux kernel drivers

  lspci -vvv:

  ...
  3b:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless 
Network Adapter (rev 32)
  Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network 
Adapter
  Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B- DisINTx+
  Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
SERR- 
  Kernel driver in use: ath10k_pci
  Kernel modules: ath10k_pci

  -

  Testing wireless speed with RT-87U 802.11ac router shows that the
  speed is only 27.3 megabits per second which is very low for an
  802.11ac card:

  iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [  3] local 10.10.10.78 port 48930 connected with 10.10.10.1 port 5001
  [ ID] Interval   Transfer Bandwidth
  [  3]  0.0-10.0 sec  32.6 MBytes  27.3 Mbits/sec

  

  For comparison, on the same network (from the same distance to the
  router) I have the following result with an Intel's card (on a 4.8
  kernel, different laptop):

  UX32LN:~$ lspci | grep 7260
  02:00.0 Network controller: Intel Corporation Wireless 7260 (rev bb)

  UX32LN:~$ iperf -c rtr
  
  Client connecting to rtr, TCP port 5001
  TCP window size: 85.0 KByte (default)
  
  [ 3] local 10.10.10.208 port 37196 connected with 10.10.10.1 port 5001
  [ ID] Interval Transfer Bandwidth
  [ 3] 0.0-10.1 sec 237 MBytes 198 Mbits/sec
  administrator@UX32LN:~$ lsp
  lspci lspcmcia lspgpot

  200 Mbps is much better.

  ---

  Back to the problematic card:

  Booted 16.04.2 with the rolling HWE kernel 4.8:

  journalctl -k | grep -i ath
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: enabling device ( 
-> 0002)
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: pci irq msi 
oper_irq_mode 2 irq_mode 0 reset_mode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/pre-cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/cal-pci-:3b:00.0.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: Direct firmware load 
for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: could not fetch 
firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: qca6174 hw3.2 target 
0x0503 chip_id 0x00340aff sub 1a56:1535
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: kconfig debug 0 
debugfs 1 tracing 1 dfs 0 testmode 0
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: firmware ver 
WLAN.RM.2.0-00180-QCARMSWPZ-1 api 4 features wowlan,ignore-otp,no-4addr-pad 
crc32 75dee6c5
  Mar 04 18:28:31 ubuntu kernel: ath10k_pci :3b:00.0: board_file api 2 
bmi_id N/A crc32 6fc88fe7
  Mar 04 18:28:34 ubuntu kernel: ath10k_pci :3b:00.0: htt-ver 3.26 wmi-op 4 
htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
  Mar 04 18:28:34 ubuntu kernel: ath: EEPROM regdomain: 0x6c
  Mar 04 18:28:34 ubuntu kernel: ath: EEPROM indic

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

[Kernel-packages] [Bug 1670041] Re: Poor performance of Atheros QCA6174 802.11ac (rev 32) (Killer Wireless 1535)

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