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Multi-processor systems
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Merrick Stemen



Joined: 08 Jul 2003
Posts: 11

Post Multi-processor systems Reply with quote

Any ideas on why, when I run 24x7 on a quad procesor Xeon system, the jobs do not all complete?

I have 20 jobs cascading to launch one another on Finish or Error. They run fine on my Pentium 4 single processor system; but when I run them on my quad-Xeon machine I get skipped processes, the processes aren't completely skipped, because they launch the next one, but there are no log entries to tell me whether they have even run, and the job has not produced the desired output. I have left logging enabled. I have even tried to use the LogAddMessageEx command, nothing shows up in the log--not even a start job/end job message.

Is 24x7 not interacting correctly with the OS in a multi-processor configuration? I don't know. I know 24x7 is waiting to get notification back from the operating system for some jobs, but even if I run synchronous this happens.

I am at a loss. I will not be able to use 24x7 if this problem persists. I have to find something that will work on my multi-processor system.

I have tried so many things with 24x7 that work on the single CPU system, but fail miserably in the multi-processor environment.

I think any reasonable explanation will give me hope.

Tue Jul 29, 2003 10:36 am View user's profile Send private message
SysOp
Site Admin


Joined: 26 Nov 2006
Posts: 7968

Post Re: Multi-processor systems Reply with quote

Try using BindCPU utility to bind jobs to individual processors. This utility should help you to to solve job concurrency problems.

Here is the link
http://www.softtreetech.com/24x7/script.htm

: Any ideas on why, when I run 24x7 on a quad procesor Xeon system, the jobs do
: not all complete?

: I have 20 jobs cascading to launch one another on Finish or Error. They run
: fine on my Pentium 4 single processor system; but when I run them on my
: quad-Xeon machine I get skipped processes, the processes aren't completely
: skipped, because they launch the next one, but there are no log entries to
: tell me whether they have even run, and the job has not produced the
: desired output. I have left logging enabled. I have even tried to use the
: LogAddMessageEx command, nothing shows up in the log--not even a start
: job/end job message.

: Is 24x7 not interacting correctly with the OS in a multi-processor
: configuration? I don't know. I know 24x7 is waiting to get notification
: back from the operating system for some jobs, but even if I run
: synchronous this happens.

: I am at a loss. I will not be able to use 24x7 if this problem persists. I
: have to find something that will work on my multi-processor system.

: I have tried so many things with 24x7 that work on the single CPU system, but
: fail miserably in the multi-processor environment.

: I think any reasonable explanation will give me hope.

Tue Jul 29, 2003 1:54 pm View user's profile Send private message
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