Date: Sat, 24 Feb 2007 23:55:19 -0700 From: "Coleman Kane" <zombyfork@gmail.com> To: "Kris Kennaway" <kris@obsecurity.org> Cc: smp@freebsd.org, hackers@freebsd.org, current@freebsd.org, Coleman Kane <cokane@freebsd.org> Subject: Re: Progress on scaling of FreeBSD on 8 CPU systems Message-ID: <346a80220702242255q409e668eqcad84d848d363bd2@mail.gmail.com> In-Reply-To: <20070225060305.GA47361@xor.obsecurity.org> References: <20070224213111.GB41434@xor.obsecurity.org> <346a80220702242100i7ec22b5h4b25cc7d20d03e98@mail.gmail.com> <20070225054120.GA47059@xor.obsecurity.org> <20070225054755.GA33858@ramen.coleyandcheryl> <20070225060305.GA47361@xor.obsecurity.org>
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On 2/24/07, Kris Kennaway <kris@obsecurity.org> wrote: > > On Sun, Feb 25, 2007 at 05:47:55AM +0000, Coleman Kane wrote: > > On Sun, Feb 25, 2007 at 12:41:20AM -0500, Kris Kennaway wrote, and it > was proclaimed: > > > On Sat, Feb 24, 2007 at 10:00:35PM -0700, Coleman Kane wrote: > > > > > > > What does the performance curve look like for the in-CVS 7-CURRENT > tree with > > > > 4BSD or ULE ? How do those stand up against the Linux SMP scheduler > for > > > > scalability. It would be nice to see the comparison displayed to see > what > > > > the performance improvements of the aforementioned patch were > realized to. > > > > This would likely be a nice graphics for the SMPng project page, > BTW... > > > > > > There are graphs of this on Jeff's blog, referenced in that URL. > > > Fixing filedesc locking makes a HUGE difference. > > > > > > Kris > > > > Thanks. I saw that shortly after I sent the email... /me stupid. > > > > How stable is ULE now since the recent swath of rewrites in the past > months? > > I think what is in CVS for 7.x is pretty stable. One of the difficult > things with schedulers is making sure that all workloads perform well, > so testing in different environments is always helpful. > > Kris > > P.S. ULE in 6.x is still not recommended, but hopefully the fixes can > be merged at some point. I primarily use 7-CURRENT on my laptop. At some point I had ULE enabled just to share my experiences with development. What is the status with ULE on UP systems? Is it expected to be on-par or better than 4BSD, or is it now only recommended for MP? -- coleman
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