net-next v2 2/2] tcp: add NV congestion control
>
> Signed-off-by: Lawrence Brakmo
Series applied, thanks.
Removed most of the module parameters
Tested in a rack using between 1 and 380 active TCP-NV flows.
Consists of the following patches:
[PATCH net-next v2 1/2] tcp: add in_flight to tcp_skb_cb
[PATCH net-next v2 2/2] tcp: add NV congestion control
Signed-off-by: Lawrence Brakmo
include/net
TCP-NV (New Vegas) is a major update to TCP-Vegas.
An earlier version of NV was presented at 2010's LPC.
It is a delayed based congestion avoidance for the
data center. This version has been tested within a
10G rack where the HW RTTs are 20-50us and with
1 to 400 flows.
A description of TCP-NV, in
From: Lawrence Brakmo
Date: Tue, 7 Jun 2016 01:04:06 +
> The reason why this may be necessary, is that under some conditions
> NV flows competing with more aggressive flows will perform
> poorly. People may be more willing to test NV if there is a quick
> and simple way to revert if necessary
On 6/6/16, 4:01 PM, "David Miller" wrote:
>From: Lawrence Brakmo
>Date: Fri, 3 Jun 2016 13:37:58 -0700
>
>> +module_param(nv_enable, int, 0644);
>> +MODULE_PARM_DESC(nv_enable, "enable NV (congestion avoidance)
>>behavior");
>> +module_param(nv_pad, int, 0644);
>> +MODULE_PARM_DESC(nv_pad, "extr
From: Lawrence Brakmo
Date: Fri, 3 Jun 2016 13:37:58 -0700
> +module_param(nv_enable, int, 0644);
> +MODULE_PARM_DESC(nv_enable, "enable NV (congestion avoidance) behavior");
> +module_param(nv_pad, int, 0644);
> +MODULE_PARM_DESC(nv_pad, "extra packets above congestion level");
> +module_param(n
net-next 2/2] tcp: add NV congestion control
Signed-off-by: Lawrence Brakmo
include/net/tcp.h | 2 +
net/ipv4/Kconfig | 16 ++
net/ipv4/Makefile | 1 +
net/ipv4/tcp_input.c | 5 +-
net/ipv4/tcp_nv.c | 597
net/ipv4
TCP-NV (New Vegas) is a major update to TCP-Vegas.
An earlier version of NV was presented at 2010's LPC.
It is a delayed based congestion avoidance for the
data center. This version has been tested within a
10G rack where the HW RTTs are 20-50us.
A description of TCP-NV, including implementation
d
ows.
>
> Consists of the following patches:
> [PATCH net-next 1/2] tcp: add in_flight to tcp_skb_cb
> [PATCH net-next 2/2] tcp: add NV congestion control
>
> Signed-off-by: Lawrence Brakmo
Sorry this is too late for the current merge window, please resubmit when
the net-next tree opens back up.
tcp_skb_cb
[PATCH net-next 2/2] tcp: add NV congestion control
Signed-off-by: Lawrence Brakmo
include/net/tcp.h | 2 +
net/ipv4/Kconfig | 16 ++
net/ipv4/Makefile | 1 +
net/ipv4/tcp_input.c | 6 +-
net/ipv4/tcp_nv.c | 592
net
TCP-NV (New Vegas) is a major update to TCP-Vegas.
An earlier version of NV was presented at 2010's LPC.
It is a delayed based congestion avoidance for the
data center. This version has been tested within a
10G rack where the HW RTTs are 20-50us.
A description of TCP-NV, including implementation
d
r link utilization.
>
>Consists of the following patches:
>
>[RFC PATCH v6 net-next 1/4] tcp: replace cnt & rtt with struct in
>[RFC PATCH v6 net-next 2/4] tcp: refactor struct tcp_skb_cb
>[RFC PATCH v6 net-next 3/4] tcp: add in_flight to tcp_skb_cb
>[RFC PATCH v6 net-
From: Lawrence Brakmo
Date: Tue, 25 Aug 2015 16:33:50 -0700
> Changes from v5: cleaning of NV code, changing some default parameters
I have no fundamental objections to this patch series.
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On 8/5/15, 5:51 PM, "knn...@gmail.com on behalf of Kenneth Klette
Jonassen" wrote:
>On Wed, Aug 5, 2015 at 3:39 AM, Lawrence Brakmo wrote:
>> This is a request for comments.
>
>Nice to see more development on delay-based congestion control.
>
>It would be good to see how NV stacks up against C
sts of the following patches:
[RFC PATCH v6 net-next 1/4] tcp: replace cnt & rtt with struct in
[RFC PATCH v6 net-next 2/4] tcp: refactor struct tcp_skb_cb
[RFC PATCH v6 net-next 3/4] tcp: add in_flight to tcp_skb_cb
[RFC PATCH v6 net-next 4/4] tcp: add NV congestion control
Signed-off-by: L
This is a request for comments.
TCP-NV (New Vegas) is a major update to TCP-Vegas.
An earlier version of NV was presented at 2010's LPC.
It is a delayed based congestion avoidance for the
data center. This version has been tested within a
10G rack where the HW RTTs are 20-50us.
A description of T
Kenneth, thank you for your comments, I¹ve implemented most of the
improvements you've mentioned.
I¹m finishing the new patch and the updated results, they should
be done by Monday (including cdg).
On 8/5/15, 5:51 PM, "knn...@gmail.com on behalf of Kenneth Klette
Jonassen" wrote:
>On Wed, Aug 5
On Wed, Aug 5, 2015 at 3:39 AM, Lawrence Brakmo wrote:
> This is a request for comments.
Nice to see more development on delay-based congestion control.
It would be good to see how NV stacks up against CDG. Any chance of
adding cdg as a congestion control parameter to your experiments?
Experimen
H v5 net-next 3/4] tcp: add in_flight to tcp_skb_cb
[RFC PATCH v5 net-next 4/4] tcp: add NV congestion control
Signed-off-by: Lawrence Brakmo
include/net/tcp.h | 20 ++-
net/ipv4/Kconfig| 16 ++
net/ipv4/Makefile | 1 +
net/ipv4/tcp_bic.c | 6 +-
net/ipv4/tcp_cdg.c |
This is a request for comments.
TCP-NV (New Vegas) is a major update to TCP-Vegas.
An earlier version of NV was presented at 2010's LPC.
It is a delayed based congestion avoidance for the
data center. This version has been tested within a
10G rack where the HW RTTs are 20-50us.
A description of T
4 net-next 1/4] tcp: replace cnt & rtt with struct in pkts_acked()
[RFC PATCH v4 net-next 2/4] tcp: refactor struct tcp_skb_cb
[RFC PATCH v4 net-next 3/4] tcp: add in_flight to tcp_skb_cb
[RFC PATCH v4 net-next 4/4] tcp: add NV congestion control
Signed-off-by: Lawrence Brakmo
include/
This is a request for comments.
TCP-NV (New Vegas) is a major update to TCP-Vegas.
An earlier version of NV was presented at 2010's LPC.
It is a delayed based congestion avoidance for the
data center. This version has been tested within a
10G rack where the HW RTTs are 20-50us.
A description of T
This is a request for comments.
TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
NV was presented at 2010's LPC (slides). It is a delayed based
congestion avoidance for the data center. This version has been tested
within a 10G rack where the HW RTTs are 20-50us.
A descrip
[RFC PATCH v3 net-next 3/3] tcp: add NV congestion control
Signed-off-by: Lawrence Brakmo
include/net/tcp.h | 20 ++-
net/ipv4/Kconfig| 16 ++
net/ipv4/Makefile | 1 +
net/ipv4/tcp_bic.c | 6 +-
net/ipv4/tcp_cdg.c | 14 +-
net/ipv4/tcp_cubic.c| 6 +-
net/
Thank you all for your comments, I¹m currently testing the changes.
Other comments inline.
On 7/21/15, 11:50 PM, "Yuchung Cheng" wrote:
>On Tue, Jul 21, 2015 at 9:21 PM, Lawrence Brakmo wrote:
>> This is a request for comments.
>>
>> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier
On Wed, Jul 22, 2015 at 2:50 AM, Yuchung Cheng wrote:
> On Tue, Jul 21, 2015 at 9:21 PM, Lawrence Brakmo wrote:
>> This is a request for comments.
>>
>> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
>> NV was presented at 2010's LPC (slides). It is a delayed based
>> co
On Tue, Jul 21, 2015 at 9:21 PM, Lawrence Brakmo wrote:
> This is a request for comments.
>
> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
> NV was presented at 2010's LPC (slides). It is a delayed based
> congestion avoidance for the data center. This version has been
This is a request for comments.
TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
NV was presented at 2010's LPC (slides). It is a delayed based
congestion avoidance for the data center. This version has been tested
within a 10G rack where the HW RTTs are 20-50us.
A descrip
[RFC PATCH v2 net-next 3/3] tcp: add NV congestion control
Signed-off-by: Lawrence Brakmo
include/net/tcp.h | 21 ++-
net/ipv4/Kconfig | 16 ++
net/ipv4/Makefile | 1 +
net/ipv4/sysctl_net_ipv4.c | 9 +
net/ipv4/tcp_bic.c | 6 +-
net/ipv4/tcp_c
On 7/3/15, 1:30 PM, "Neal Cardwell" wrote:
>> diff --git a/include/linux/tcp.h b/include/linux/tcp.h
>> index 48c3696..05e0da5 100644
>> --- a/include/linux/tcp.h
>> +++ b/include/linux/tcp.h
>> @@ -254,6 +254,10 @@ struct tcp_sock {
>> u32 lost_out; /* Lost packets
On 7/3/15, 10:10 AM, "Tom Herbert" wrote:
>On Thu, Jul 2, 2015 at 6:21 PM, Lawrence Brakmo wrote:
>> This is a request for comments.
>>
>> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
>> NV was presented at 2010's LPC (slides). It is a delayed based
>> congestion av
On 7/3/15, 9:47 AM, "David Miller" wrote:
>From: Lawrence Brakmo
>Date: Thu, 2 Jul 2015 18:21:24 -0700
>
>> This is a request for comments.
>>
>> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
>> NV was presented at 2010's LPC (slides). It is a delayed based
>> conge
> diff --git a/include/linux/tcp.h b/include/linux/tcp.h
> index 48c3696..05e0da5 100644
> --- a/include/linux/tcp.h
> +++ b/include/linux/tcp.h
> @@ -254,6 +254,10 @@ struct tcp_sock {
> u32 lost_out; /* Lost packets */
> u32 sacked_out; /* SACK'd
On Thu, Jul 2, 2015 at 6:21 PM, Lawrence Brakmo wrote:
> This is a request for comments.
>
> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
> NV was presented at 2010's LPC (slides). It is a delayed based
> congestion avoidance for the data center. This version has been t
On Fri, 2015-07-03 at 09:37 -0700, David Miller wrote:
> From: Eric Dumazet
> Date: Fri, 03 Jul 2015 07:00:23 +0200
>
> > tcp_skb_cb is currently 44 bytes, so even if you add one u32, it should
> > not exceed cb[]
>
> Please see sock_skb_cb, which consumes space in skb->cb[] in parallel
> with t
From: Lawrence Brakmo
Date: Thu, 2 Jul 2015 18:21:24 -0700
> This is a request for comments.
>
> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
> NV was presented at 2010's LPC (slides). It is a delayed based
> congestion avoidance for the data center. This version has
From: Eric Dumazet
Date: Fri, 03 Jul 2015 07:00:23 +0200
> tcp_skb_cb is currently 44 bytes, so even if you add one u32, it should
> not exceed cb[]
Please see sock_skb_cb, which consumes space in skb->cb[] in parallel
with things like tcp_skb_cb. The usage of skb->cb[] therefore really
is 48 b
On Thu, 2015-07-02 at 18:21 -0700, Lawrence Brakmo wrote:
> This is a request for comments.
>
> TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
> NV was presented at 2010's LPC (slides). It is a delayed based
> congestion avoidance for the data center. This version has bee
This is a request for comments.
TCP-NV (New Vegas) is a major update to TCP-Vegas. An earlier version of
NV was presented at 2010's LPC (slides). It is a delayed based
congestion avoidance for the data center. This version has been tested
within a 10G rack where the HW RTTs are 20-50us.
A descrip
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