From mboxrd@z Thu Jan 1 00:00:00 1970 From: Davidlohr Bueso Subject: Re: [PATCH v3] sched/fair: Add advisory flag for borrowing a timeslice Date: Tue, 25 Nov 2014 10:27:04 -0800 Message-ID: <1416940024.26209.2.camel@linux-t7sj.site> References: <1416862595-24513-1-git-send-email-khalid.aziz@oracle.com> <54749617.5030309@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <54749617.5030309-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> Sender: linux-api-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Khalid Aziz Cc: Thomas Gleixner , corbet-T1hC0tSOHrs@public.gmane.org, mingo-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org, peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org, riel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org, rientjes-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org, ak-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, mgorman-l3A5Bk7waGM@public.gmane.org, liwanp-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org, raistlin-k2GhghHVRtY@public.gmane.org, kirill.shutemov-VuQAYsv1563Yd54FQh9/CA@public.gmane.org, atomlin-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, avagin-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org, gorcunov-GEFAQzZX7r8dnm+yROfE0A@public.gmane.org, serge.hallyn-Z7WLFzj8eWMS+FvcfC7Uqw@public.gmane.org, athorlton-sJ/iWh9BUns@public.gmane.org, oleg-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, vdavydov-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org, daeseok.youn-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, keescook-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org, yangds.fnst-BthXqXjhjHXQFUHtdCDX3A@public.gmane.org, sbauer-F61uvSdQLzf2fBVCVOL8/A@public.gmane.org, vishnu.ps-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, axboe-b10kYP2dOMg@public.gmane.org, paulmck-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-api@vger.kernel.org On Tue, 2014-11-25 at 07:45 -0700, Khalid Aziz wrote: > This solution has been used by both database and java on other OSs and > has shown performance improvement. Andrew had asked for performance > numbers on Linux with this patch last time I sent this out and it took > me a while to get performance folks to run a full TPC-C workload. They > did see a 3% improvement in tpcc as I noted in commit log and that is a > significant improvement. 3% for such a change seems pretty worthless... I would have expected this having to impact performance much more. Thanks, Davidlohr