From owner-freebsd-performance@FreeBSD.ORG Tue Apr 24 20:51:33 2012 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id D25F0106566C; Tue, 24 Apr 2012 20:51:33 +0000 (UTC) (envelope-from kmacybsd@gmail.com) Received: from mail-gy0-f182.google.com (mail-gy0-f182.google.com [209.85.160.182]) by mx1.freebsd.org (Postfix) with ESMTP id 758CE8FC0A; Tue, 24 Apr 2012 20:51:33 +0000 (UTC) Received: by ghrr20 with SMTP id r20so929139ghr.13 for ; Tue, 24 Apr 2012 13:51:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; bh=ULlfCLcWnoPGOp3nJ6HmubRexj8G1TEk8DiCxV9nw/o=; b=bdWExRXHMDIVLEzPwSaTYiC1/apajFLGmvud8vziV84agP+WRsGMDVTKajeLDqBPQv 8NoL1pCjGnk3xPRkQwvYCn2+Y+li9UUVtZQWw7LqPmcB2ZUjdhGSOqI/C1IzWJjCvCsM 04X7DzsS+oLmrXd2azP1ygokyJdeYH7JHKwKQNdDhne4FGGPWTLw+8qss1t3st0NO7PQ TbMuJN9kQu8YFNgyceQEGKfuz45kyE1whk4gIOgMNv9KKKutLgwmCW99ERopbf45dO7w shv1Tn9QJc5pPhwIIWxEnekjV//4xG0n60ljy/vSxBUU2Gbp03kYkYMV4H6wdDYEbT24 pjww== MIME-Version: 1.0 Received: by 10.50.51.197 with SMTP id m5mr11852119igo.38.1335300692474; Tue, 24 Apr 2012 13:51:32 -0700 (PDT) Sender: kmacybsd@gmail.com Received: by 10.50.129.39 with HTTP; Tue, 24 Apr 2012 13:51:32 -0700 (PDT) In-Reply-To: <20120424204533.GS32749@zxy.spb.ru> References: <20120424191415.GE76983@zxy.spb.ru> <20120424203658.GR32749@zxy.spb.ru> <20120424204533.GS32749@zxy.spb.ru> Date: Tue, 24 Apr 2012 22:51:32 +0200 X-Google-Sender-Auth: j6iZpRkhRYRZA-T_CBspOW-I1xI Message-ID: From: "K. Macy" To: Slawa Olhovchenkov Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Cc: freebsd-performance@freebsd.org, freebsd-current@freebsd.org Subject: Re: pmap and mtx scalability problem X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 24 Apr 2012 20:51:34 -0000 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 wrote= : > 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 wr= ote: >> > On Tue, Apr 24, 2012 at 09:27:30PM +0200, K. Macy wrote: >> > >> >> Known problem. There is an open disagreement about how to improve the >> >> 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 --=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