Bug 10638

Summary: sysbench+mysql(oltp, readonly) 30% regression with 2.6.26-rc1
Product: Process Management Reporter: Rafael J. Wysocki (rjw)
Component: SchedulerAssignee: Ingo Molnar (mingo)
Severity: normal CC: a.p.zijlstra, dhaval
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.26-rc1 Tree: Mainline
Subsystem: Regression: Yes
Bug Depends on:    
Bug Blocks: 10492    

Description Rafael J. Wysocki 2008-05-08 13:51:37 UTC
Subject    : sysbench+mysql(oltp, readonly) 30% regression with 2.6.26-rc1
Submitter  : "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
Date       : 2008-05-07 4:55
References : http://marc.info/?l=linux-kernel&m=121013681527052&w=2
Handled-By : Ingo Molnar <mingo@elte.hu>
Patch      : http://marc.info/?l=linux-kernel&m=121015292616802&w=2

This entry is being used for tracking a regression from 2.6.25.  Please don't
close it until the problem is fixed in the mainline.
Comment 1 Rafael J. Wysocki 2008-05-08 13:52:44 UTC
Caused by:

commit 8f1bc385cfbab474db6c27b5af1e439614f3025c
Author: Peter Zijlstra <a.p.zijlstra@chello.nl>
Date:   Sat Apr 19 19:45:00 2008 +0200

    sched: fair: weight calculations

    Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Signed-off-by: Ingo Molnar <mingo@elte.hu>
Comment 2 Rafael J. Wysocki 2008-05-20 15:10:24 UTC
Regressions list annotation:
Handled-By : Peter Zijlstra <peterz@infradead.org>
References : http://lkml.org/lkml/2008/5/18/177
Comment 3 Rafael J. Wysocki 2008-06-05 14:36:11 UTC
Confirmed to be fixed in the Linus' tree.
References : http://lkml.org/lkml/2008/6/2/10