Date: Fri, 18 Feb 2000 02:30:00 -0500 From: "David E. Cross" <crossd@cs.rpi.edu> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: "David E. Cross" <crossd@cs.rpi.edu>, freebsd-hackers@FreeBSD.ORG, crossd@cs.rpi.edu Subject: Re: stuck NFS procs (LONG) Message-ID: <200002180730.CAA14119@cs.rpi.edu> In-Reply-To: Message from Matthew Dillon <dillon@apollo.backplane.com> of "Thu, 17 Feb 2000 22:12:01 PST." <200002180612.WAA74819@apollo.backplane.com>
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Ok... we'll start with the process table...
monica# ps axl | grep D
UID PID PPID CPU PRI NI VSZ RSS WCHAN STAT TT TIME COMMAND
0 0 0 0 -18 0 0 0 sched DLs ?? 0:00.81 (swapper)
0 2 0 0 -18 0 0 0 psleep DL ?? 1:10.93 (pagedaemon
0 3 0 91 18 0 0 0 psleep DL ?? 0:26.62 (vmdaemon)
0 4 0 0 18 0 0 0 syncer DL ?? 1:51.82 (syncer)
17727 74079 1 0 -22 0 5952 340 vmpfw D p4- 0:01.53 emacs websrv
17727 74586 1 0 -22 0 5952 340 vmpfw D p4- 0:01.55 emacs websrv
33639 88342 1 0 -22 0 5856 340 vmpfw D p4- 0:01.27 emacs proxy.
2371 90317 1 3 -18 0 268 8 pgtblk D p4- 0:00.02 cat /usr/loc
2646 83637 1 0 -22 0 6256 528 vmpfw D p9- 0:03.56 emacs
2646 85055 1 0 -22 0 6344 528 vmpfw D p9- 0:03.00 emacs
2937 89546 1 0 -22 0 5576 340 vmpfw D pa 0:00.55 emacs /usr/t
2575 75559 1 0 -22 0 5652 340 vmpfw D pf- 0:00.99 emacs simple
2575 78298 1 0 -22 0 5576 340 vmpfw D pj- 0:00.97 emacs watchf
32837 85464 1 0 -22 0 6264 528 vmpfw D pj- 0:02.81 emacs proj2.
32837 87204 1 0 -22 0 6264 528 vmpfw D pj- 0:03.75 emacs proj2.
17727 90346 1 2 -22 0 5940 344 vmpfw D pk- 0:01.23 emacs comm.c
2575 76313 1 0 -22 0 5656 340 vmpfw D pl- 0:01.54 emacs show_p
33355 84406 1 3 -22 0 7136 528 vmpfw D pl- 0:04.54 emacs osshel
33355 85094 1 0 -22 0 7184 528 vmpfw D pl- 0:04.52 emacs
17727 90000 1 0 -22 0 5940 340 vmpfw D pl- 0:01.17 emacs comm.c
0 64921 63848 0 10 0 476 292 ppwait D pt 0:00.07 -su (csh)
2551 75473 1 0 -22 0 7284 524 vmpfw D q4- 0:05.27 emacs tftp_s
2023 77402 1 0 -22 0 5672 340 vmpfw D q8- 0:00.71 emacs index.
37080 79999 1 0 -22 0 6208 524 vmpfw D q8- 0:02.61 emacs bogosj
2440 86790 1 0 -22 0 7176 524 vmpfw D q9- 0:05.37 emacs bardet
2440 88149 1 1 -22 0 7244 524 vmpfw D q9- 0:04.91 emacs bardet
17727 89837 1 1 -22 0 5940 340 vmpfw D qd- 0:01.13 emacs comm.c
33639 88194 1 0 -22 0 5856 340 vmpfw D qi- 0:01.34 emacs proxy.
And we'll move on to some backtraces...
(kgdb) proc 74079
(kgdb) back
#0 mi_switch () at ../../kern/kern_synch.c:825
#1 0xc0131781 in tsleep (ident=0xc054b220, priority=0,
wmesg=0xc0208bc2 "vmpfw", timo=0) at ../../kern/kern_synch.c:443
#2 0xc01cfa3f in vm_fault (map=0xca8028c0, vaddr=136036352,
fault_type=3 '\003', fault_flags=8) at ../../vm/vm_fault.c:308
#3 0xc01ea17a in trap_pfault (frame=0xcac7ffbc, usermode=1, eva=136036368)
at ../../i386/i386/trap.c:816
#4 0xc01e9cca in trap (frame={tf_es = 136249383, tf_ds = -1078001625,
tf_edi = 400, tf_esi = 10, tf_ebp = -1078114780, tf_isp = -892862492,
tf_ebx = -1078110248, tf_edx = 136036332, tf_ecx = 137580544,
tf_eax = 1210023680, tf_trapno = 12, tf_err = 6, tf_eip = 134831395,
tf_cs = 31, tf_eflags = 66195, tf_esp = -1078114788, tf_ss = 39})
at ../../i386/i386/trap.c:358
(kgdb) proc 74586
(kgdb) back
#0 mi_switch () at ../../kern/kern_synch.c:825
#1 0xc0131781 in tsleep (ident=0xc054b220, priority=0,
wmesg=0xc0208bc2 "vmpfw", timo=0) at ../../kern/kern_synch.c:443
#2 0xc01cfa3f in vm_fault (map=0xca6262c0, vaddr=136036352,
fault_type=3 '\003', fault_flags=8) at ../../vm/vm_fault.c:308
#3 0xc01ea17a in trap_pfault (frame=0xcac58fbc, usermode=1, eva=136036368)
at ../../i386/i386/trap.c:816
#4 0xc01e9cca in trap (frame={tf_es = 39, tf_ds = 39, tf_edi = 2320,
tf_esi = 58, tf_ebp = -1078114780, tf_isp = -893022236,
tf_ebx = -1078108328, tf_edx = 136036332, tf_ecx = 137580544,
tf_eax = 1210023680, tf_trapno = 12, tf_err = 6, tf_eip = 134831395,
tf_cs = 31, tf_eflags = 66195, tf_esp = -1078114788, tf_ss = 39})
at ../../i386/i386/trap.c:358
(kgdb) proc 88342
(kgdb) back
#0 mi_switch () at ../../kern/kern_synch.c:825
#1 0xc0131781 in tsleep (ident=0xc054b220, priority=0,
wmesg=0xc0208bc2 "vmpfw", timo=0) at ../../kern/kern_synch.c:443
#2 0xc01cfa3f in vm_fault (map=0xca801240, vaddr=136036352,
fault_type=3 '\003', fault_flags=8) at ../../vm/vm_fault.c:308
#3 0xc01ea17a in trap_pfault (frame=0xca973fbc, usermode=1, eva=136036368)
at ../../i386/i386/trap.c:816
#4 0xc01e9cca in trap (frame={tf_es = 39, tf_ds = 39, tf_edi = 0, tf_esi = 0,
tf_ebp = -1078114664, tf_isp = -896057372, tf_ebx = -1078110532,
tf_edx = 136036332, tf_ecx = -1078110532, tf_eax = 1210023680,
tf_trapno = 12, tf_err = 6, tf_eip = 134831395, tf_cs = 31,
tf_eflags = 66195, tf_esp = -1078114672, tf_ss = 39})
at ../../i386/i386/trap.c:358
(this is the cat(1))
(kgdb) proc 90317
(kgdb) back
#0 mi_switch () at ../../kern/kern_synch.c:825
#1 0xc0131781 in tsleep (ident=0xc054b220, priority=4,
wmesg=0xc01ff83c "pgtblk", timo=0) at ../../kern/kern_synch.c:443
#2 0xc014ea7c in allocbuf (bp=0xc532ec08, size=8192)
at ../../kern/vfs_bio.c:1805
#3 0xc014e5b0 in getblk (vp=0xca69b240, blkno=185, size=8192, slpflag=0,
slptimeo=0) at ../../kern/vfs_bio.c:1566
#4 0xc0180cde in nfs_getcacheblk (vp=0xca69b240, bn=185, size=8192,
p=0xcac45520) at ../../nfs/nfs_bio.c:914
#5 0xc017f9db in nfs_bioread (vp=0xca69b240, uio=0xcacbdf10, ioflag=8323072,
cred=0xc16d4180, getpages=0) at ../../nfs/nfs_bio.c:409
#6 0xc01a5204 in nfs_read (ap=0xcacbdec8) at ../../nfs/nfs_vnops.c:963
#7 0xc0159f4f in vn_read (fp=0xc16268c0, uio=0xcacbdf10, cred=0xc16d4180,
flags=0) at vnode_if.h:303
#8 0xc013a06d in dofileread (p=0xcac45520, fp=0xc16268c0, fd=3,
buf=0x805a000, nbyte=65536, offset=-1, flags=0)
at ../../kern/sys_generic.c:179
#9 0xc0139f77 in read (p=0xcac45520, uap=0xcacbdf94)
at ../../kern/sys_generic.c:111
#10 0xc01ea777 in syscall (frame={tf_es = 39, tf_ds = 39, tf_edi = 1,
tf_esi = 65536, tf_ebp = -1077945672, tf_isp = -892608540, tf_ebx = 0,
tf_edx = 16, tf_ecx = 13, tf_eax = 3, tf_trapno = 0, tf_err = 2,
tf_eip = 134515596, tf_cs = 31, tf_eflags = 582, tf_esp = -1077945796,
tf_ss = 39}) at ../../i386/i386/trap.c:1100
I'll stop here.
--
David Cross | email: crossd@cs.rpi.edu
Acting Lab Director | NYSLP: FREEBSD
Systems Administrator/Research Programmer | Web: http://www.cs.rpi.edu/~crossd
Rensselaer Polytechnic Institute, | Ph: 518.276.2860
Department of Computer Science | Fax: 518.276.4033
I speak only for myself. | WinNT:Linux::Linux:FreeBSD
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