** Changed in: linux
Status: Confirmed => Expired
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Title:
HP cciss / SmartArray responding slowly
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This bug was filed against a series that is no longer supported and so
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** Changed in: linux (Ubuntu)
** Changed in: linux
Importance: Unknown => Medium
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Title:
HP cciss / SmartArray responding slowly
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Have had this problem with cciss driver since 2006. Try changing value
in read_ahead_kb (in SLES10 x86) this is located at
/sys/block/ccciss\_cxdx/queue) and see if performance doesn't return.
Try 256.
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HP cciss / SmartArray responding slowly
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You received
Again, all our testing was done on on P400/P800 cards with BBWC and P200
without BBWC so I don't see this being the cause.
The IOPs I can't see being an issue as it's something I'm typically
seeing on smaller amounts of larger files. Larger amounts of smaller
files seem ok for speed - similarly, l
Hi,
I agree that it is not file system specific as I was testing against the block
device:
dd if=/dev/cciss/c0d1 of=/dev/null bs=1024k count=1024
Furthermore, the cciss driver (which this bug is about) will not be used
by Linux when running on ESX. Changing the Linux kernel version will not
chan
It's not ext3 specific, all our testing has been done using XFS as the
only thing we use extX for is /boot
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HP cciss / SmartArray responding slowly
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Hi,
I performed a lot of tests on HP Proliant hw and raid controllers. I installed
native linux and linux on top of esxi 4. The performance problem is the same,
but a little more obscure, cause linear copy works fine, only application
server are problematic. If I downgrade kernel to 2.6.29 I ge
This performance regression saga continues
I installed Ubuntu Lucid Lynx rc2 which is based on 2.6.32-something.
The performance is as expected (89/90MB/s) doing my simple dd test.
I downloaded 2.6.32.7 from kernel.org and compiled a kernel using the
Ubuntu config file as a starting point (ad
Hi,
For me, this bug relates specifically to a performance regression
between 2.6.28 and 2.6.29.
The E200i is an entry level controller. Unless you have the battery
backed write cache (BBWC) enabler installed you will see "poor" write
performance. The read performance on the E200i is not brillian
MikeM,
Thanks for your reply. On E200i I'm having probles on all kernels from 2.6.18
through 2.6.31. Even on Centos 5.4 with installed binary driver from hp.com.
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HP cciss / SmartArray responding slowly
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You received this bug notification because you are a
Maxym,
still awaiting a resolution from HP I'm afraid.
My thoughts remain as I previously posted on the kernel.org bug posting:
Anyone using a Smart Array controller should, in my opinion, do thorough
testing prior to using a 2.6.29 or more recent kernel for production work
loads. At a minimum th
Any luck with it?
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** Changed in: linux
Status: Unknown => Confirmed
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/proc/version_ginature from karmic on DL380g5 that showed the slower
performance
** Attachment added: "version.log"
http://launchpadlibrarian.net/34252678/version.log
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HP cciss / SmartArray responding slowly
https://bugs.launchpad.net/bugs/337419
You received this bug notification because y
# cat /proc/driver/cciss/cciss0
cciss0: HP Smart Array P400 Controller
Board ID: 0x3234103c
Firmware Version: 5.20
IRQ: 37
Logical drives: 2
Current Q depth: 0
Current # commands on controller: 0
Max Q depth since init: 5
Max # commands on controller since init: 159
Max SG entries since init: 31
Se
lspci -vvnn from karmic on DL380g5 that showed the slower performance
** Attachment added: "lspci-vvnn.log"
http://launchpadlibrarian.net/34252633/lspci-vvnn.log
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HP cciss / SmartArray responding slowly
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dmesg from karmic on DL380g5 that showed the slower performance
** Also affects: linux via
http://bugzilla.kernel.org/show_bug.cgi?id=13127
Importance: Unknown
Status: Unknown
** Attachment added: "dmesg.log"
http://launchpadlibrarian.net/34252609/dmesg.log
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HP cciss / SmartAr
uname -a from karmic on DL380g5 that showed the slower performance
** Attachment added: "uname-a.log"
http://launchpadlibrarian.net/34252649/uname-a.log
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HP cciss / SmartArray responding slowly
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** Changed in: linux (Ubuntu)
Status: New => Confirmed
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** Tags added: karmic
** Tags added: cciss performance regression-potential
** Tags added: hp
** Tags removed: regression-potential
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HP cciss / SmartArray responding slowly
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Hi,
I have seen this too using custom kernels on Hardy and on the current RC
of Karmic Koala. The performance regression I have seen using the
standard Linux CCISS kernel driver is a drop of about 66% performance.
The performance regression was introduced in 2.6.29-rc1 and is in
current kernels up
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