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[PATCH] cfq-iosched: cfq-iosched: Implement group idling and IOPS accounting for groups V4
Hi, This is V4 of the patches for group_idle and CFQ group charge accounting in terms of IOPS implementation. Since V3 not much has changed. Just more testing and rebase on top of for-2.6.36 branch of block tree. What's the problem ------------------ On high end storage (I got on HP EVA storage array with 1... 11 Aug 2010 19:09
[PATCH 3/5] cfq-iosched: Implement tunable group_idle
o Implement a new tunable group_idle, which allows idling on the group instead of a cfq queue. Hence one can set slice_idle = 0 and not idle on the individual queues but idle on the group. This way on fast storage we can get fairness between groups at the same time overall throughput improves. Signed-off... 11 Aug 2010 19:09
[PATCH 5/5] cfq-iosched: Documentation help for new tunables
o Some documentation to provide help with tunables. Signed-off-by: Vivek Goyal <vgoyal(a)> --- Documentation/block/cfq-iosched.txt | 45 ++++++++++++++++++++++++++++ Documentation/cgroups/blkio-controller.txt | 28 +++++++++++++++++ 2 files changed, 73 insertions(+), 0 deletions(-) create m... 11 Aug 2010 19:09
[PATCH 1/5] cfq-iosched: Do not idle if slice_idle=0
o do not idle either on cfq queue or service tree if slice_idle=0. User does not want any queue or service tree idling. Currently even if slice_idle=0, we were waiting for request to finish before expiring the queue and that can lead to lower queue depths. Signed-off-by: Vivek Goyal <vgoyal(a)> ---... 11 Aug 2010 19:09
[PATCH -v2] perf, x86: try to handle unknown nmis with running perfctrs
I was debuging this a little more, see version 2 below. -Robert -- From 8bb831af56d118b85fc38e0ddc2e516f7504b9fb Mon Sep 17 00:00:00 2001 From: Robert Richter <robert.richter(a)> Date: Thu, 5 Aug 2010 16:19:59 +0200 Subject: [PATCH] perf, x86: try to handle unknown nmis with running perfctrs When pe... 11 Aug 2010 19:08
Outdated sysfs.txt document?
Hi, I have been going through Documentation/filesystems/sysfs.txt, and noticed what I believe to be either outdated or incomplete: The "Top Level Directory Layout" mentions block/ bus/ class/ dev/ devices/ firmware/ net/ fs/ We seem to be missing kernel, power, hypervisor, module, etc. dave(a)cowboy... 11 Aug 2010 21:22
[PATCHv3 1/2] lib: vsprintf: optimised put_dec() function
The put_dec() and family of functions were based on a code optimised for processors with 8-bit ALU but since we don't need to limit ourselves to such small ALUs, the code was optimised and used capacities of an 16-bit ALU anyway. This patch goes further and uses the full capacity of the processor's ALU. On 64... 11 Aug 2010 18:02
[PATCH 5/5] scsi: megaraid_sas - Version and documentation update
Update the version and documentation. Signed-off-by Bo Yang<bo.yang(a)> --- Documentation/scsi/ChangeLog.megaraid_sas | 16 +++++++++++++++- drivers/scsi/megaraid/megaraid_sas.h | 6 +++--- 2 files changed, 18 insertions(+), 4 deletions(-) diff -rupN old/Documentation/scsi/ChangeLog.megaraid... 11 Aug 2010 18:02
[PATCH 3/5] scsi: megaraid_sas - Add input parameter for max_sectors
Driver add the input parameters support for max_sectors for our gen2 chip. Customer can Set the max_sectors support to 1MB for gen2 chip during the driver load. Signed-off-by Bo Yang<bo.yang(a)> --- drivers/scsi/megaraid/megaraid_sas.c | 30 ++++++++++++++++++++++++++++++ drivers/scsi/megaraid/megara... 11 Aug 2010 18:02
[PATCH 4/5] scsi: megaraid_sas - Add three times Online controller reset in driver's reset routine
If fw didn't raise the interrupt with the fw state change to driver and fw goes to failure state, driver Will check the FW state in driver's timeout routine and issue the reset if need. Driver will do the OCR upto three Times until kill adapter. Also driver will issue OCR before driver kill adapter even if fw in... 11 Aug 2010 18:02
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