Date: Tue, 24 Apr 2012 23:22:03 +0200 From: "K. Macy" <kmacy@freebsd.org> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: freebsd-performance@freebsd.org, freebsd-current@freebsd.org Subject: Re: pmap and mtx scalability problem Message-ID: <CAHM0Q_N7VRLJ0VMjPtMDr%2BTtz7NZXnygsAaaUXgzf-r_jbhEDg@mail.gmail.com> In-Reply-To: <CAHM0Q_NvJV4d0H5n8Mf==8528L-u=U2o325AzRCE1NwGAoT-DA@mail.gmail.com> References: <20120424191415.GE76983@zxy.spb.ru> <CAHM0Q_PEe18-4yfrHPujUWxsvWTUuP2-0QvJtWOh2f=igjqh=A@mail.gmail.com> <20120424203658.GR32749@zxy.spb.ru> <CAHM0Q_Pso4iFXt5afBSxxK2kywm=dpm_2W29EUosJtc0XDkR_g@mail.gmail.com> <20120424204533.GS32749@zxy.spb.ru> <CAHM0Q_NvJV4d0H5n8Mf==8528L-u=U2o325AzRCE1NwGAoT-DA@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
You can try these. Your mileage *will* vary. https://gitorious.org/~kmm/freebsd/kmm-sandbox/commits/work/svn_release_8_1= _0_page_lock https://gitorious.org/~kmm/freebsd/kmm-sandbox/commits/work/svn_trunk_page_= lock On Tue, Apr 24, 2012 at 10:51 PM, K. Macy <kmacy@freebsd.org> wrote: > It's a bit dated at this point. Nonetheless, when gitorious is able to > give something other than 503 to my search queries I'll post it. > > On Tue, Apr 24, 2012 at 10:45 PM, Slawa Olhovchenkov <slw@zxy.spb.ru> wro= te: >> On Tue, Apr 24, 2012 at 10:43:08PM +0200, K. Macy wrote: >> >>> No. I developed a patch from Jeffr that pushed the vm_page_lock array >>> down in to the machine dependent code, replacing most of the uses of >>> the single vm_page_queue_lock. However, alc doesn't like the design >>> and has not proposed an alternative. >> >> can i test this? >> >>> -Kip >>> >>> On Tue, Apr 24, 2012 at 10:36 PM, Slawa Olhovchenkov <slw@zxy.spb.ru> w= rote: >>> > On Tue, Apr 24, 2012 at 09:27:30PM +0200, K. Macy wrote: >>> > >>> >> Known problem. There is an open disagreement about how to improve th= e >>> >> granularity of locking in pmap. >>> > >>> > split locking to process-specific information and global information? >>> > use lock-free lists (i see TAILQ_INSERT_TAIL in pmap_enter)? >>> > >>> > sorry for stupidity, if any. >>> >>> >>> >>> -- >>> =A0 =A0?The real damage is done by those millions who want to 'get by.' >>> The ordinary men who just want to be left in peace. Those who don?t >>> want their little lives disturbed by anything bigger than themselves. >>> Those with no sides and no causes. Those who won?t take measure of >>> their own strength, for fear of antagonizing their own weakness. Those >>> who don?t like to make waves?or enemies. >>> >>> =A0 =A0Those for whom freedom, honour, truth, and principles are only >>> literature. Those who live small, love small, die small. It?s the >>> reductionist approach to life: if you keep it small, you?ll keep it >>> under control. If you don?t make any noise, the bogeyman won?t find >>> you. >>> >>> =A0 =A0But it?s all an illusion, because they die too, those people who >>> roll up their spirits into tiny little balls so as to be safe. Safe?! >>> >From what? Life is always on the edge of death; narrow streets lead to >>> the same place as wide avenues, and a little candle burns itself out >>> just like a flaming torch does. >>> >>> =A0 =A0I choose my own way to burn.? >>> >>> =A0 =A0Sophie Scholl > > > > -- > =A0 =A0=93The real damage is done by those millions who want to 'get by.' > The ordinary men who just want to be left in peace. Those who don=92t > want their little lives disturbed by anything bigger than themselves. > Those with no sides and no causes. Those who won=92t take measure of > their own strength, for fear of antagonizing their own weakness. Those > who don=92t like to make waves=97or enemies. > > =A0 =A0Those for whom freedom, honour, truth, and principles are only > literature. Those who live small, love small, die small. It=92s the > reductionist approach to life: if you keep it small, you=92ll keep it > under control. If you don=92t make any noise, the bogeyman won=92t find > you. > > =A0 =A0But it=92s all an illusion, because they die too, those people who > roll up their spirits into tiny little balls so as to be safe. Safe?! > From what? Life is always on the edge of death; narrow streets lead to > the same place as wide avenues, and a little candle burns itself out > just like a flaming torch does. > > =A0 =A0I choose my own way to burn.=94 > > =A0 =A0Sophie Scholl --=20 =A0 =A0=93The real damage is done by those millions who want to 'get by.' The ordinary men who just want to be left in peace. Those who don=92t want their little lives disturbed by anything bigger than themselves. Those with no sides and no causes. Those who won=92t take measure of their own strength, for fear of antagonizing their own weakness. Those who don=92t like to make waves=97or enemies. =A0 =A0Those for whom freedom, honour, truth, and principles are only literature. Those who live small, love small, die small. It=92s the reductionist approach to life: if you keep it small, you=92ll keep it under control. If you don=92t make any noise, the bogeyman won=92t find you. =A0 =A0But it=92s all an illusion, because they die too, those people who roll up their spirits into tiny little balls so as to be safe. Safe?! >From what? Life is always on the edge of death; narrow streets lead to the same place as wide avenues, and a little candle burns itself out just like a flaming torch does. =A0 =A0I choose my own way to burn.=94 =A0 =A0Sophie Scholl
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CAHM0Q_N7VRLJ0VMjPtMDr%2BTtz7NZXnygsAaaUXgzf-r_jbhEDg>