Re: volanoMark regression with kernel 2.6.26-rc1

Srivatsa Vaddagiri
2008-05-12T04:42:41Z

On Mon, May 12, 2008 at 11:33:20AM +0800, Zhang, Yanmin wrote:
> To make the testing faster, I changed some parameters of volanoMark.
> The result of 2.6.26-rc1(﻿CONFIG_CGROUP_SCHED=y) is about 2%~3% less than the one of
> 2.6.25 (﻿CONFIG_USER_SCHED=y).

This for confirming my observation. It seems much better than the 50% regression
reported earlier (with 2.6.26-rc1 and CONFIG_USER_SCHED).

Ideally we should get same results with CONFIG_USER_SCHED also (in
2.6.26-rc1). That needs some work in load balance code. Till that is
tackled, IMHO we can retain all the current code by either:

1. Disabling CONFIG_GROUP_SCHED (or better)
2. Enable CONFIG_GROUP_SCHED and CONFIG_CGROUP_SCHED

Ingo/Peter, What's your opinion?

--
Regards,
vatsa