Date: Fri, 14 Aug 1998 11:14:21 -0500 From: Karl Denninger <karl@mcs.net> To: Terry Lambert <tlambert@primenet.com> Cc: current@FreeBSD.ORG Subject: Re: Tentative fix for VM bug Message-ID: <19980814111421.45977@mcs.net> In-Reply-To: <199808140355.UAA00642@usr06.primenet.com>; from Terry Lambert on Fri, Aug 14, 1998 at 03:55:48AM %2B0000 References: <199808140244.TAA26443@usr02.primenet.com> <199808140355.UAA00642@usr06.primenet.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Fri, Aug 14, 1998 at 03:55:48AM +0000, Terry Lambert wrote: > > A posting about NFS problems to the -hackers list gave me the clue > > I needed. > > > > I believe I have a fix for the VM bug. > > > > Would people running -current *AND* experiencing: > > > > o zeroed pages that shouldn't be > > > > o process hangs sleeping in "vmopar" > > > > o nfs client instability when executing programs or accessing > > files from the server (ie: mailboxes, etc., using lockfiles) > > > > o parts of files getting written to other files (that's me) > > > > o file corruption when accessing files via two routes (either > > two processes, or one process that both mmap's and extends > > the file via a descriptor). > > Note: If I have lost my mind, there are two other places where this > could be happening instead. > > If I have lost my mind, then I expect an increase in the occurance > "vm_page_free: freeing free page", and I will have to go back to > the other places (which are vastly more complicated to fix). I can confirm that the propounded fix doesn't, at least not for the case of a Diablo news server which gets files whacked with either zeros or random trash contents from time to time. With the "fix" in I see no change of significance in behavior. -- -- Karl Denninger (karl@MCS.Net)| MCSNet - Serving Chicagoland and Wisconsin http://www.mcs.net/ | T1's from $600 monthly / All Lines K56Flex/DOV | NEW! Corporate ISDN Prices dropped by up to 50%! Voice: [+1 312 803-MCS1 x219]| EXCLUSIVE NEW FEATURE ON ALL PERSONAL ACCOUNTS Fax: [+1 312 803-4929] | *SPAMBLOCK* Technology now included at no cost To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?19980814111421.45977>