Date: Wed, 22 Jul 1998 15:39:30 +0200 From: Christoph Kukulies <kuku@gilberto.physik.RWTH-Aachen.DE> To: Matthew Thyer <thyerm@camtech.net.au>, Christoph Kukulies <kuku@gilberto.physik.RWTH-Aachen.DE> Cc: freebsd-current@freefall.cdrom.com Subject: Re: panic in one year old 3.0-current Message-ID: <19980722153930.A6043@gil.physik.rwth-aachen.de> In-Reply-To: <35B5D5AE.4801C673@camtech.net.au>; from Matthew Thyer on Wed, Jul 22, 1998 at 09:36:06PM %2B0930 References: <199807220830.KAA05011@gilberto.physik.RWTH-Aachen.DE> <35B5D5AE.4801C673@camtech.net.au>
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On Wed, Jul 22, 1998 at 09:36:06PM +0930, Matthew Thyer wrote: > NFS had lots of problems until quite recently. Sigh. Tell this a person to whom you always argued "I'm using FreeBSD over Linux for it's stability what networking is concerned" :-) Maybe things are even worse under Linux. NFS was indeed involved in my case alse (see below). > > I was restricting my NFS use to the version 2 protocol until very > recently. > > Now it seems to work very well with version 3 on recent current. > > e.g. I spent the other day building the world on a Pentium 100 > with 32MB RAM running X (Netscape, fvwm2-95 and xterms) whilst > at the same time I was installing various ports AND [here's the > best bit]: Random playing 2 Gig worth of MPEG 1 layer 3 audio > files with mpg123 version 0.59o from an NFS3 mounted directory > (from a Solaris 2.5.1 system) without a hitch. I was not using > any buffering with mpg123 but I did have to run it a a real time > process to stop the sound breaking up. (rtprio 31 mpg123 .... ) > > I did this for 5 or 6 hours or so without a problem. > > Of course make world took a lot longer as mpg123 was using ~35% > of the CPU most of the time. > > Paging didn't seem to be a problem as I was using about 50% of my > 130 MB swap the whole time. > > The load average was usually between 3 and 4 most of the day. > > Needless to say I was very impressed as was the rest of the office. > (Even the HP-UX lover had to be impressed as HP-UX 10.20 is really > unstable with NFS3). > > Now thats thrashing the poor P100! > > Of course this is only a test of NFS3 client. > > > Christoph Kukulies wrote: > > > > On a NFS/NIS server that serves a number of FreeBSD workstations > > a colleague who is doing backups over the net (using tar/rmt) I was errounously assuming that it was tar/rmt but it was tar with destination to a file on an NFS mounted Dec Alpha (OSF/1). > > told me that the server is crashing when he is trying to > > backup a FS over the net. > > > > I located the twp panics we had to be in these areas: > > > > The first one: > > > > /var/log/messages sagt : > > Jul 22 09:36:03 toots /kernel: > > Jul 22 09:36:03 toots /kernel: > > Jul 22 09:36:03 toots /kernel: Fatal trap 12: page fault while in kernel mode > > Jul 22 09:36:03 toots /kernel: fault virtual address = 0x64a4505d > > Jul 22 09:36:03 toots /kernel: fault code = supervisor write, > > +page not present > > Jul 22 09:36:03 toots /kernel: instruction pointer = 0x8:0xf0136e75 > > Jul 22 09:36:03 toots /kernel: stack pointer = 0x10:0xf4740ef4 > > Jul 22 09:36:03 toots /kernel: frame pointer = 0x10:0xf4740f58 > > Jul 22 09:36:04 toots /kernel: code segment = base 0x0, limit > > +0xfffff, type 0x1b > > Jul 22 09:36:04 toots /kernel: = DPL 0, pres 1, def32 1, gran > > +1 > > Jul 22 09:36:04 toots /kernel: processor eflags = interrupt enabled, resume, > > +IOPL = 0 > > Jul 22 09:36:04 toots /kernel: current process = 17629 (tar) > > Jul 22 09:36:04 toots /kernel: interrupt mask = > > Jul 22 09:36:04 toots /kernel: trap number = 12 > > Jul 22 09:36:04 toots /kernel: panic: page fault > > > > kernel region: > > > > f0136a8c T _rmdir > > f0136bec T _ogetdirentries > > f0136e64 T _getdirentries > > <<<<<< f0136e75 > > f0137020 T _umask > > f0137048 T _revoke > > f013715c T _getvnode > > f01371a0 F vfs_vnops.o > > > > and the second one: > > Jul 22 09:54:37 toots /kernel: > > Jul 22 09:54:37 toots /kernel: > > Jul 22 09:54:37 toots /kernel: Fatal trap 12: page fault while in kernel mode > > Jul 22 09:54:37 toots /kernel: fault virtual address = 0xa0004 > > Jul 22 09:54:37 toots /kernel: fault code = supervisor read, > > +page > > not present > > Jul 22 09:54:37 toots /kernel: instruction pointer = 0x8:0xf01aea28 > > Jul 22 09:54:37 toots /kernel: stack pointer = 0x10:0xf473ed84 > > Jul 22 09:54:37 toots /kernel: frame pointer = 0x10:0xf473ed98 > > Jul 22 09:54:37 toots /kernel: code segment = base 0x0, limit > > +0xfffff, type 0x1b > > Jul 22 09:54:37 toots /kernel: = DPL 0, pres 1, def32 1, gran > > +1 > > Jul 22 09:54:37 toots /kernel: processor eflags = interrupt enabled, resume, > > +IOPL = 0 > > Jul 22 09:54:37 toots /kernel: current process = 280 (gzip) > > Jul 22 09:54:37 toots /kernel: interrupt mask = net bio > > > > kernel region: > > > > f01ae694 t _pmap_remove_entry > > f01ae7ac t _pmap_insert_entry > > f01ae82c t _pmap_remove_pte > > f01ae8a8 t _pmap_remove_page > > f01ae8ec T _pmap_remove > > f01ae9f8 t _pmap_remove_all > > <<<<<<< f01aea28 > > f01aeb58 T _pmap_protect > > f01aed78 T _pmap_enter > > f01aefc8 t _pmap_enter_quick > > f01af0a0 T _pmap_object_init_pt > > f01af3b0 T _pmap_prefault > > f01af578 T _pmap_change_wiring > > > > Does anyone know if this behaviour may correlate to a meanwhile > > fixed bug and if it might be worth upgrading to 2.2.6-stable? > > > > -- > > Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-current" in the body of the message > > -- > /=====================================================================\ > |Work: Matthew.Thyer@dsto.defence.gov.au | Home: thyerm@camtech.net.au| > \=====================================================================/ > "If it is true that our Universe has a zero net value for all conserved > quantities, then it may simply be a fluctuation of the vacuum of some > larger space in which our Universe is imbedded. In answer to the > question of why it happened, I offer the modest proposal that our > Universe is simply one of those things which happen from time to time." > E. P. Tryon from "Nature" Vol.246 Dec.14, 1973 -- --Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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