From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Hazelton Subject: Re: RFT: updatedb "morning after" problem [was: Re: -mm merge plans for 2.6.23] Date: Fri, 27 Jul 2007 18:51:28 -0400 References: <9a8748490707231608h453eefffx68b9c391897aba70@mail.gmail.com> <200707271345.55187.dhazelton@enter.net> <1185574124.6342.31.camel@Homer.simpson.net> In-Reply-To: <1185574124.6342.31.camel@Homer.simpson.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200707271851.29061.dhazelton@enter.net> Sender: owner-linux-mm@kvack.org Return-Path: To: Mike Galbraith Cc: Andrew Morton , Ingo Molnar , Frank Kingswood , Andi Kleen , Nick Piggin , Ray Lee , Jesper Juhl , ck list , Paul Jackson , linux-mm@kvack.org, linux-kernel@vger.kernel.org List-ID: On Friday 27 July 2007 18:08:44 Mike Galbraith wrote: > On Fri, 2007-07-27 at 13:45 -0400, Daniel Hazelton wrote: > > On Friday 27 July 2007 06:25:18 Mike Galbraith wrote: > > > On Fri, 2007-07-27 at 03:00 -0700, Andrew Morton wrote: > > > > So hrm. Are we sure that updatedb is the problem? There are quite a > > > > few heavyweight things which happen in the wee small hours. > > > > > > The balance in _my_ world seems just fine. I don't let any of those > > > system maintenance things run while I'm using the system, and it > > > doesn't bother me if my working set has to be reconstructed after > > > heavy-weight maintenance things are allowed to run. I'm not seeing > > > anything I wouldn't expect to see when running a job the size of > > > updatedb. > > > > > > -Mike > > > > Do you realize you've totally missed the point? > > Did you notice that I didn't make one disparaging remark about the patch > or the concept behind it? Did you notice that I took _my time_ to > test, to actually look at the problem? No, you're too busy running > your mouth to appreciate the efforts of others. If you're done being an ass, take note of the fact that I never even said you were doing that. What I was commenting on was the fact that you (and a lot of the other developers) seem to keep saying "It doesn't happen here, so it doesn't matter!" - ie: If I don't see something happening, it doesn't matter. > > > Do yourself a favor, go dig into the VM source. Read it, understand it > (not terribly easy), _then_ come back and preach to me. I've been trying to do that since the thread started. Note that you snipped where I said (and I'm going to paraphrase myself) "There is another way to fix this, but I don't have the understanding necessary". Now, once more, I'm going to ask: What is so terribly wrong with swap prefetch? Why does it seem that everyone against it says "Its treating a symptom, so it can't go in"? Try coming up with an answer that isn't "I don't see the problem on my $10K system" or similar - try explaining it based on the *technical* merits. Does it cause the processor cache to get thrashed? Does it create locking problems? I stand by my statements, as vitriolic as you and Rene seem to want to get over it. So far in this thread I have not seen one bit of *technical* discussion over the merits, just the bits I've simplified and stated before. > Have a nice day. I am. You being nasty when somebody gets fed up with a line of BS doesn't stop me from having a nice day. Only thing that could make my life any better would be to have the questions I've asked answered, rather than having supposedly intelligent people act like trolls. DRH -- Dialup is like pissing through a pipette. Slow and excruciatingly painful. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org