Re: Please try knfsd 980922

Thomas Davis (tadavis@lbl.gov)
Thu, 24 Sep 1998 13:37:08 -0700


Tad Kollar wrote:
>
> Unfortunately I'm seeing stability problems using a large number of client
> systems with knfs-980922. This is a cluster with 40 diskless machines... after
> about 17 of them boot, the nfs server stops responding. Each client needs
> two mounts. Originally I was running with 5 nfsds which I increased to 16
> but it didn't help.
>

I don't see this problem yet, BUT, I've got a Sun E-450 running Solaris
2.6 that justs drives knfsd nuts. I get nfsd's that are constantly
running, and without the NFSv3 in mountd disabled (which is already
fixed), Solaris can't mount the volume.

Kernel is 2.1.122, knfsd980920, both patches applied.

I'm looking for more information on what to do to figure out what makes
those

some stats:

root 819 14.2 0.0 0 0 3 RW Sep 17 1407:23 (nfsd)
root 820 14.3 0.0 0 0 3 RW Sep 17 1409:56 (nfsd)
root 821 14.3 0.0 0 0 3 RW Sep 17 1410:02 (nfsd)
root 822 14.2 0.0 0 0 3 RW Sep 17 1407:39 (nfsd)

uptime command:

1:30pm up 6 days, 21:25, 2 users, load average: 5.24, 5.03, 4.78

mem:

total: used: free: shared: buffers: cached:
Mem: 263557120 201576448 61980672 5804032 161021952 11694080
Swap: 133885952 2473984 131411968
MemTotal: 257380 kB
MemFree: 60528 kB
MemShared: 5668 kB
Buffers: 157248 kB
Cached: 11420 kB
SwapTotal: 130748 kB
SwapFree: 128332 kB

slabinfo - version: 1.0
kmem_cache 27 42
tcp_tw_bucket 0 0
tcp_bind_bucket 17 127
tcp_open_request 0 63
skbuff_head_cache 24 175
sock 62 77
filp 944 966
signal_queue 0 0
buffer_head 157284 158298
mm_struct 31 62
vm_area_struct 520 819
dentry_cache 9874 10013
files_cache 34 56
uid_cache 3 127
size-131072 0 0
size-65536 0 0
size-32768 0 0
size-16384 4 11
size-8192 0 13
size-4096 12 24
size-2048 85 128
size-1024 6 8
size-512 36 40
size-256 16 28
size-128 359 500
size-64 768 924
size-32 2821 6867
slab_cache 74 126

knfsstat:

Server rpc stats:
calls badcalls badauth badclnt xdrcall
1521135 48 6 0 42
Server nfs v2:
null getattr setattr root lookup readlink
6 0% 11461 0% 109 0% 0 0% 5887 0% 0 0%
read wrcache write create remove rename
733365 48% 0 0% 767842 50% 131 0% 199 0% 178 0%
link symlink mkdir rmdir readdir fsstat
0 0% 0 0% 30 0% 47 0% 977 0% 903 0%

Client rpc stats:
calls retrans authrefrsh
1521135 48 6
Client nfs v2:
null getattr setattr root lookup readlink
0 0% 6604 11% 3132 5% 0 0% 26547 47% 3598 6%
read wrcache write create remove rename
0 0% 0 0% 12988 23% 720 1% 476 0% 32 0%
link symlink mkdir rmdir readdir fsstat
0 0% 63 0% 197 0% 168 0% 806 1% 415 0%

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