Date: Wed, 26 Jun 1996 00:50:18 -0700 From: David Greenman <davidg@root.com> To: John Hay <jhay@mikom.csir.co.za> Cc: dyson@FreeBSD.org, stable@FreeBSD.org Subject: Re: Another try at the vm_pageout.c -stable diff Message-ID: <199606260750.AAA00743@root.com> In-Reply-To: Your message of "Sat, 26 Jun 1996 09:22:01 %2B0200." <199606260722.JAA03525@zibbi.mikom.csir.co.za>
next in thread | previous in thread | raw e-mail | index | archive | help
>> Here is yet another diff. This is the product of a discussion I just had >> with John about the nature of some of the performance problems people have >> complained about. >> This makes a slight change to the policy for bringing pages off of the >> active queue and should make the statistics gather *much* more effective >> in some cases. Please try it out and get back to us. Thanks! >> >> -DG >> >> David Greenman >> Core-team/Principal Architect, The FreeBSD Project >> >> (This includes John's other changes, so apply this to a fresh -stable copy of >> vm_pageout.c) >> > >I'm not sure how relevant this still is. I see that there was a few commits >during the night (well night for me here in SA). > >David I have tried your patch, but the kernel dies with "panic: unwire: >page not in pmap" as soon as the machine starts to swap. It did not say >anything more. ... >| f0186eb0 T _vmtotal >| f0187060 F vm_mmap.o Hmmm. I just discovered that my test kernel had the "NO_SWAPPING" option in it and thus didn't exercise this piece of code. I'm building a kernel right now with that option removed. I also did a careful code review of that patch, but something apparantly slipped by. I'm working on it... -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199606260750.AAA00743>