we are using HP-UX B.11.31 U ia64 HP-UX server. Can you check bellow the top command output whether can point out any abnormality. Becoz i suspect something wrong there,
thanks !
---------- Post updated 05-12-10 at 08:54 AM ---------- Previous update was 05-11-10 at 03:47 PM ----------
sorry guys if above content is not clear.
Actually what I want to know is what is the nfsd process running under root. I guess it is something related to OS nfs processors.
But should it take so much of the processor resource , and why the nice is getting 28% of CPU.
Is these normal .... ?
Last edited by pludi; 05-11-2010 at 07:37 AM..
Reason: code tags, please...
Consider getting a copy of the HP Tuning and Performance book.
The snapshot from "top" taken out of context doesn't mean a lot.
The percentage shown in "top" for a single process such as "nfsd" (see "man nfsd" to read about the process) is the percentage of one CPU. You have many CPUs.
If you have HP "glance" this is a much better tool for snapshots.
There are many packages for recording historical performance information including unix "sar" and commercial packages from HP. An hour-by-hour view of server performance is more valuable than a snapshot.
The "top" output posted implies a severe shortage of memory and CPU. This is only an implication and we would need better information before making a recommendation.
Whether an apparent shortage actually matters would need detailed analysis of swap statistics and CPU waits. You will need something better than "top".
One of the many advantages of unix over rival Operating Systems is that a correctly tuned server can perform well when theoretically overloaded.
The "glance" program has more options which help find bottlenecks.
Press ? to get the menu or start glance with the option "e.g. glance -t".
In your case these should help:
w (swap activity)
t (system tables) Need to see all pages of this.
m (memory)
B (Global waits)
N (NFS)
First impressions are that you are short of memory but the above glance options should show an overview of what is happening. If you have pseudo-swap configured this can skew the memory figures.
BTW. The vmstat would mean more if we knew the sampling interval (i.e. the command line you typed).
Hi.
Using debian 8.0 on a raspberryPI SERVER, accessing nfs from another raspberry gives quick reply.
But from a slackware 14.1 SERVER on a Celeron 2Ghz dual core, is painfully slow and i cannot figure out why.
Can anyone guide me? (2 Replies)
Hi,
I see following 'nfsd' command is using more CPU. Could someone please comment on it's pros and cons of it?
CPU TTY PID USERNAME PRI NI SIZE RES STATE TIME %WCPU %CPU COMMAND
5 ? 16890 root 152 20 34696K 12036K run 57166:48 856.13 854.64 nfsd
OS -- HP-UX
One... (4 Replies)
Hi all,
I am having a following problem. Trying to run PXE boot server on my OpenBSD machine I have ended up on making NFSd daemon works. On all machines I get an error msg. nfsd : nfsd count is invalid: (null) no matter what computer I run it on. Everything works just well on FreeBSD and linux.... (1 Reply)
Hello,
what is the relation between portmap and nfsd and how communication between them looks like. Does the nfsclient contact with the portmap or nfsd first.
Many thanks in advance for helping me to understand this :)
BR,
p (3 Replies)
hi guys
I installed NFS server and everything started out fine but I don't have /proc/fs/nfsd entry and so I can't mount nfsd. Therefore I can't start my nfs service.
Why don't I have /proc/fs/nfsd? How do I create that?
Thanks (1 Reply)
Hi
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