Hello Ross,
I've got a similar problem since a week with my server.
I'm running RH 8.0 on a Xeon 1.4Ghz with 2GB RAM, too.
My CPU usage was pretty low (>90% idle) but the CPU load average was at 14.
For now I'm waiting for the next time it happens to get some more
information.
Best regards, Reiner
-----Urspr?ngliche Nachricht-----
Von: Ross McInnes (Systems) [mailto:sysrm@stvincent.ac.uk]
Gesendet: Dienstag, 9. Dezember 2003 16:34
An: samba@lists.samba.org
Betreff: [Samba] Tall tale of woe....
For the last year or so i have been having problems in general with samba
(various versions) on the same box.
Dell 2500 Xeon 1.8 with 2gb of ram running Redhat 8.
What will happen from time to time (although its now happened 3 times in
the last 5 days, hence this email) is people will be slow to log in, if at
all. Several things appear to happen.
The main one is that a smbd process which belongs to a user logging in
will appear in top (a cpu monitor program) using massives amount of CPU
etc. although the system says it still has about 10-15% idle, this
generally stops everyone logging in.
Now as part of top on RH (doesnt look the same on bsd) it has a system
entry with a % of cpu given over to that. Now system basically means
anything I/O or kernal related. since the kernal governs resources this
isnt uncommon. During a period of 4 hours i monitored this "system"
and it
never went above 10% and even then for a matter of seconds.
When this problem occours it pushes system upto 50-80%!!! i look at the
server and the disks are pretty much idle so its not Disk Related. i am at
a loss to find out what it is actually doing to cause this.
however once i kill off this process it seems to slowly get back to
normal.
Now i have read other peoples emails and gone through the archives about
this and read about "failure for 4. Error = No route to host",
"lib/util_sock.c:read_data(436)" and "oplocking"
problems as they all appear to be more pronounced around the time of
this high CPU/rouge smbd process.
However it would seem a lot of the oplocking problems seem to be
hardware related. I use decent 3com kit here with a 4950 as a core and
4400's at edge (i.e not cheap and cheerful netgear/dlink/etc stuff) so im
wondering if anyone else has had these problems with this kit. or if its
not the kit what can it actually be?
ive tried turning oplocks on and off to no avail. it still has this issue.
any ideas on the "read_data(436)" and "failure for 4. Error = No
route to
host" ?
Any help offered very gratefully recieved.
With thanks
Ross McInnes
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