Date: Thu, 15 Dec 2011 17:25:51 +0100 From: Attilio Rao <attilio@freebsd.org> To: George Mitchell <george+freebsd@m5p.com> Cc: Andrey Chernov <ache@nagual.pp.ru>, Doug Barton <dougb@freebsd.org>, freebsd-stable@freebsd.org, Steve Kargl <sgk@troutmask.apl.washington.edu> Subject: Re: SCHED_ULE should not be the default Message-ID: <CAJ-FndBSOS3hKYqmPnVkoMhPmowBBqy9-%2BeJJEMTdoVjdMTEdw@mail.gmail.com> In-Reply-To: <4EE1EAFE.3070408@m5p.com> References: <4EE1EAFE.3070408@m5p.com>
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--00151747c69622e1e404b423f00d Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable 2011/12/9 George Mitchell <george+freebsd@m5p.com>: > dnetc is an open-source program from http://www.distributed.net/. =C2=A0I= t > tries a brute-force approach to cracking RC4 puzzles and also computes > optimal Golomb rulers. =C2=A0It starts up one process per CPU and runs at > nice 20 and is, for all intents and purposes, 100% compute bound. [Posting on the first message of the thread] I basically went through all the e-mail you just sent and identified 4 real report on which we could work on and summarizied in the attached Excel file. I'd like that George, Steve, Doug, Andrey and Mike possibly review the few datas there and add more, if they want, or make more important clarifications in particular about the Xorg presence (or rather not) in their workload. I've readed a couple of message in the thread pointing the finger to Xorg to be excessively CPU-intensive and I think they are right, we might try to find a solution for that at some point, but it is really a very edge case. Geroge's and Steve's case, instead, look very different from this and I want to analyze them in detail. George already provided schedgraph traces and for others, if they cannot provide them directly, I'd really appreciate they would at least describe in detail the workload so that I get a chance to reproduce it. If someone else thinks he has a specific problem that is not characterized by one of the cases above please let me know and I will put this in the chart. Thanks for the hard work you guys put in pointing out ULE's problem, I think we will get at the bottom of this if we keep up sharing thoughts and reports. Attilio --=20 Peace can only be achieved by understanding - A. Einstein --00151747c69622e1e404b423f00d--
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