Hi,
Running 2.6.23-rc9-CITI_NFS4_ALL-1 on one Intel X86_64 bi-ways machine acting
as client and server, if I do a NFSV4 mounting on itself
I get after about 1-2 hours a nfsd loop using 100% cpu suspending several
robustness tests (fsx,iozone,fssb,connectathon,fss_stress) which were running.
You will find more traces at :
Bug:
http://bugzilla.linux-nfs.org/show_bug.cgi?id=152
Here are some:
Top gives:
~~~~~~~~~~~
top - 10:00:28 up 3 days, 17:03, 8 users, load average: 21.05, 21.02, 20.94
Tasks: 178 total, 5 running, 173 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 50.0%sy, 0.0%ni, 49.8%id, 0.0%wa, 0.0%hi, 0.2%si, 0.0%st
Mem: 2056356k total, 2039940k used, 16416k free, 363516k buffers
Swap: 0k total, 0k used, 0k free, 480960k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3459 root 20 0 0 0 0 R 100 0.0 1051:05 nfsd
1 root 20 0 10312 668 552 S 0 0.0 0:04.18 init
2 root 15 -5 0 0 0 S 0 0.0 0:00.40 kthreadd
nfssd_debug gives in /var/log/messages
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
root@nfs1gb ~]# echo 32767 > /proc/sys/sunrpc/nfsd_debug
Oct 23 09:56:16 frec kernel: NFSD: laundromat_main - sleeping for 90 seconds
Oct 23 09:57:46 frec kernel: NFSD: laundromat service - starting
Oct 23 09:57:46 frec kernel: NFSD: laundromat_main - sleeping for 90 seconds
Oct 23 09:57:46 frec kernel: NFSD: laundromat service - starting
echo "t" >/proc/sysrq-trigger gives in /var/log/messages
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel:
kernel: nfsd4 S ffff81005e5cdc98 6184 3454 2
kernel: ffff81005e587ed0 0000000000000046 ffff8100716a6440 ffff81005e587e70
kernel: ffffffff808b60d0 ffff8100653a67a0 ffff81007dda07e0 ffff8100653a69a8
kernel: 000000015e587e70 ffff81005e587e70 00000000ffffffff 0000000000000246
kernel: Call Trace:
kernel: [<ffffffff80238aa9>] worker_thread+0x74/0x9b
kernel: [<ffffffff8023b818>] autoremove_wake_function+0x0/0x2e
kernel: [<ffffffff80238a35>] worker_thread+0x0/0x9b
kernel: [<ffffffff8023b706>] kthread+0x47/0x75
kernel: [<ffffffff8020c978>] child_rip+0xa/0x12
kernel: [<ffffffff8023b6bf>] kthread+0x0/0x75
kernel: [<ffffffff8020c96e>] child_rip+0x0/0x12
kernel:
kernel: nfsd S 0000000104c723ee 3784 3455 2
kernel: ffff81005e6a3df0 0000000000000046 ffff810001190000 ffff81005e6a3e00
kernel: ffff81005e6a3dc8 ffff81006561e080 ffff810064c29100 ffff81006561e288
kernel: 0000000100000000 ffff81005e6a3e00 0000000000000286 0000000000000286
kernel: Call Trace:
kernel: [<ffffffff80231cec>] __mod_timer+0xb6/0xc4
kernel: [<ffffffff805b2b56>] schedule_timeout+0x8a/0xad
kernel: [<ffffffff80231aa9>] process_timeout+0x0/0x5
kernel: [<ffffffff805a9bcb>] svc_recv+0x278/0x719
kernel: [<ffffffff805a938e>] svc_send+0x77/0xa1
kernel: [<ffffffff805a0cc1>] svc_process+0x452/0x6dd
kernel: [<ffffffff802236a1>] default_wake_function+0x0/0xe
kernel: [<ffffffff8032f5d3>] nfsd+0xdb/0x2ac
kernel: [<ffffffff8020c978>] child_rip+0xa/0x12
kernel: [<ffffffff8032f4f8>] nfsd+0x0/0x2ac
kernel: [<ffffffff8020c96e>] child_rip+0x0/0x12
kernel:
kernel:
kernel:
kernel: nfsd R running task 3784 3459 2
kernel: nfsd S 0000000104c723ee 3608 3460 2
kernel: ffff81005e00bdf0 0000000000000046 ffff810001190000 ffff81005e00be00
kernel: ffff81005e00bdc8 ffff8100721b7040 ffff81000117a040 ffff8100721b7248
kernel: 0000000100000000 ffff81005e00be00 0000000000000286 0000000000000286
kernel: Call Trace:
kernel: [<ffffffff80231cec>] __mod_timer+0xb6/0xc4
kernel: [<ffffffff805b2b56>] schedule_timeout+0x8a/0xad
kernel: [<ffffffff80231aa9>] process_timeout+0x0/0x5
kernel: [<ffffffff805a9bcb>] svc_recv+0x278/0x719
kernel: [<ffffffff805a938e>] svc_send+0x77/0xa1
kernel: [<ffffffff805a0cc1>] svc_process+0x452/0x6dd
kernel: [<ffffffff802236a1>] default_wake_function+0x0/0xe
kernel: [<ffffffff8032f5d3>] nfsd+0xdb/0x2ac
kernel: [<ffffffff8020c978>] child_rip+0xa/0x12
kernel: [<ffffffff8032f4f8>] nfsd+0x0/0x2ac
kernel: [<ffffffff8020c96e>] child_rip+0x0/0x12
kernel:
kernel:
kernel: nfsd S 0000000000000000 3992 3461 2
kernel: ffff81005e04ddf0 0000000000000046 ffff81005e04ddb8 ffff81005e04de00
kernel: ffff81005e04ddc8 ffff81005e049820 ffff81000117a7a0 ffff81005e049a28
kernel: 0000000100000000 ffff81005e04de00 00000000ffffffff 0000000000000286
kernel: Call Trace:
kernel: [<ffffffff805b2b56>] schedule_timeout+0x8a/0xad
kernel: [<ffffffff80231aa9>] process_timeout+0x0/0x5
kernel: [<ffffffff805a9bcb>] svc_recv+0x278/0x719
kernel: [<ffffffff805a938e>] svc_send+0x77/0xa1
kernel: [<ffffffff805a0cc1>] svc_process+0x452/0x6dd
kernel: [<ffffffff802236a1>] default_wake_function+0x0/0xe
kernel: [<ffffffff8032f5d3>] nfsd+0xdb/0x2ac
kernel: [<ffffffff8020c978>] child_rip+0xa/0x12
kernel: [<ffffffff8032f4f8>] nfsd+0x0/0x2ac
kernel: [<ffffffff8020c96e>] child_rip+0x0/0x12
Cheers
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