High Java Utilization

Has anyone else noticed any issues with Java utilization on ZfS
servers?
Ever since we applied the Java update for the DST change, we've
noticed that all our servers, at various times, can seem to have high
utilization in the zenloader, or zws packages.
We used to think it was a ZfS issue, as that's where we saw it, but
we're also seeing it in our APC software occasionally too, so I am
beginning to think it's a more general Java issue.
Has anyone else seen this? Is there a solution? A more appropriate
group to post in?
Graham

Hi Graham,
I didn't get an answer (so no one had an idea?...) about memory
problems.
Do you have utilization problems only? My zenloaders seems to eat
memory (one went up to max space before quitting work...), nearly all
servers went stuck sometimes, could stop the process via NRM. I'm still
waiting if it occurs again..maybe some bad schedule (timing issues)
causes it (rebuild interval too short).
Another issue about utilization and memory I have seen here happend
with a single server during inventory.
Graham Mitchell;2697645 Wrote:
> Has anyone else noticed any issues with Java utilization on ZfS
> servers?
>
> Ever since we applied the Java update for the DST change, we've
> noticed that all our servers, at various times, can seem to have high
> utilization in the zenloader, or zws packages.
>
> We used to think it was a ZfS issue, as that's where we saw it, but
> we're also seeing it in our APC software occasionally too, so I am
> beginning to think it's a more general Java issue.
>
> Has anyone else seen this? Is there a solution? A more appropriate
> group to post in?
>
>
> Graham
ObiwanRedN

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--

Thanks ak, for the response.
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I verified that it is being set in the log.txt file for the broker:
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extracted = decompress(extracted);
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if (log.isTraceEnabled()) log.trace("Message added to retrieval container.");
String signature = jmsMessage.getStringProperty(DIGITAL_SIGNATURE);
processedMessages.add(new ResultMessage(extracted, signature));
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if (log.isTraceEnabled()) log.trace("Packing retrieved messages to return.");
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collectorMessages[i] = processedMessages.get(i);
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return collectorMessages;
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sessionContext.setRollbackOnly();
log.error("Unable to locate named queue: " + jndiDestination, ex);
throw new ConsumerException("Unable to locate named queue: " + jndiDestination, ex);
} catch (InvalidSelectorException ex) {
sessionContext.setRollbackOnly();
log.error("Invalid filter: " + filter, ex);
throw new InvalidFilterException("Invalid filter: " + filter, ex);
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sessionContext.setRollbackOnly();
log.error("Message decompression failed.", ex);
throw new ConsumerException("Message decompression failed.", ex);
} catch (GeneralSecurityException ex) {
sessionContext.setRollbackOnly();
log.error("Message decryption failed.", ex);
throw new ConsumerException("Message decryption failed.", ex);
} catch (JMSException ex) {
sessionContext.setRollbackOnly();
log.error("Unable to consumer messages.", ex);
throw new ConsumerException("Unable to consume messages.", ex);
} catch (Throwable ex) {
sessionContext.setRollbackOnly();
log.error("Unexpected error.", ex);
throw new ConsumerException("Unexpected error.", ex);
} finally {
try {
if (session != null) session.close();
} catch (JMSException ex) {
log.error("Unexpected error.", ex);
Thanks for your help.
Edited by: vineet on Apr 7, 2011 10:06 AM

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