Dan,
What does iostat -xnp 1 on the sun box look like?
Are nfs mounts at 100% busy? 2.6 is a real dog when it comes
to concurrent nfs i/o; start a cp in a mounted dir, and ls
(from another terminal, cd to that same dir) will hang for
30 seconds sometimes. 2.8, no problem.
--
Dave Toal
Systems Architect
Thomson & Thomson
N. Quincy, MA
-----Original Message-----
From: Dan O'Brien
To: 'toasters(a)mathworks.com'
Cc: Wijit Siripun
Sent: 12/30/02 4:17 PM
Subject: Slow Solaris 2.6 NFS client
Hello,
We are having trouble with a Solaris client having slow read
performance. Both the Filer, F630 running 5.3.6R2, and Solaris, Ultra 2
running 2.6, client are on 100BT networks coupled thru Linksys EF24G2
Fast Etherswitch.
I looked at the obvious, all ethernet devices are in 100BT mode, running
full duplex.
SUNW,hme0: Using Internal Transceiver
SUNW,hme0: 100 Mbps full-duplex Link Up
slot 4: 10BaseT/100BaseTX Quad-Ethernet Controller
e4a MAC Address: 00:c0:95:e0:2f:48 (100tx-fd-up)
Both are running V3 NFS over UDP. I set the filer to
nfs.udp.xfersize=8192. (We changed this from the default value with only
small improvement in performance.)
The filer is serving just a few clients and at this point the only real,
demanding, client is this one Sun. Reads are quote slow.
Here's what the filer says during this time:
mlswfsa> sysstat
CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape kB/s
Cache
in out read write read write
age
1% 0 0 0 0 2 42 42 0 0
>60
1% 0 0 0 0 2 45 52 0 0
>60
1% 0 0 0 0 1 27 27 0 0
>60
1% 2 0 0 1 2 15 14 0 0
>60
1% 0 0 0 0 2 43 52 0 0
>60
3% 18 0 0 3 52 197 83 0 0
>60
I do see a some timeouts and retrans on the Solaris box:
Client rpc:
Connection oriented:
calls badcalls badxids timeouts
newcreds badverfs
929582 9 1 8 0 0
timers cantconn
nomem interrupts
0 0 0 1
Connectionless:
calls badcalls
retrans badxids timeouts newcreds
28489619 630 323405 5
324069 0
badverfs timers nomem cantsend
0 238992
0 0
Any pointers?
Thanks in advance.
Dan O'Brien, dmobrien(a)lcsi.net
Cell: 614-783-4859 Work: 614-476-8473
Home: 740-927-2178 Pataskala, OH