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тАО06-17-2008 04:52 AM
тАО06-17-2008 04:52 AM
V-2600 CPU 0 maxed out
This scenario is not a new one, in the seven years I have been here this exact scenario has happened about five times. Always just after midnight on Sunday night/Monday morning, with the exception of one time when it happened at 8am on Monday morning. We reboot all our UNIX servers every Sunday night at 7:30pm, so this is happening just a few hours after a reboot.
Ok, this time when it happened we did some snooping from inside of SAP. Looking at some OS information and noticed that the following process had CPU 0 pegged out.
/opt/java/bin/../bin/PA_RISC/native_threads/jre -lazyswap -n
It seems to me that one of the previous times that this happened we saw another process that was eating a CPU, whether it was CPU 0 I do not recall.
So, my question is for all you that might have more knowledge of the V's and it's architecture, would it be possible that if you pegged out CPU 0 it would hang the box? Is there some magic about CPU 0 that I am not aware of?
Of course this is a long shot, that process might not have anything to do with the system hanging. So, based on that if anybody sees anything that I might be missing in this scenario, please let me know.
Any help would be greatly GREATLY appreciated.
Thanks,
-Bryan
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тАО06-17-2008 05:15 AM
тАО06-17-2008 05:15 AM
Re: V-2600 CPU 0 maxed out
Hope this helps!
Regards
Torsten.
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тАО06-17-2008 05:18 AM
тАО06-17-2008 05:18 AM
Re: V-2600 CPU 0 maxed out
I think we are up to date there...or should I say as up to date as we can get on an old box. I will definitely check that out.
I will respond with what I found.
thanks,
-Bryan
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тАО06-20-2008 06:41 PM
тАО06-20-2008 06:41 PM
Re: V-2600 CPU 0 maxed out
Bill Hassell, sysadmin
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тАО08-06-2008 06:31 AM
тАО08-06-2008 06:31 AM
Re: V-2600 CPU 0 maxed out
Once again, this morning we had the same problem. And once again the process eating up the CPU was:
/opt/java/bin/../bin/PA_RISC/native_threads/jre -lazyswap -n
I am not sure what Java is used for, other than the fact that we had to install it to do the Oracle install.
Does anyone know what purpose this process would serve on an Oracle/SAP box, other than to do an install or upgrade?
Thanks,
-Bryan
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тАО08-06-2008 06:40 AM
тАО08-06-2008 06:40 AM
Re: V-2600 CPU 0 maxed out
http://h18012.www1.hp.com/java/patches/index.html
Hope this helps!
Regards
Torsten.
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those who understand binary, and those who don't.
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тАО08-06-2008 06:57 AM
тАО08-06-2008 06:57 AM
Re: V-2600 CPU 0 maxed out
I will check the patches again. Make sure I did not miss something.
Thanks,
-Bryan
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тАО08-06-2008 10:07 AM
тАО08-06-2008 10:07 AM
Re: V-2600 CPU 0 maxed out
/bin/ksh ./emShell.ksh EM /opt/SiteNetML em.cfg
Which is our Liebert monitoring utility. Which I know nothing about because I did not install it, it was installed before my time.
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тАО08-07-2008 10:45 AM
тАО08-07-2008 10:45 AM
Re: V-2600 CPU 0 maxed out
When the system hung, I could login to another system and force a reboot:
remsh $HOST "shutdown -ry 0"
Please note that at one point I typed
remsh $HOST|shutdown -ry 0
This was one of the biggest fat-finger events I'd ever done.
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тАО08-07-2008 10:50 AM
тАО08-07-2008 10:50 AM
Re: V-2600 CPU 0 maxed out
Did you ever resolve the issue?
Did you figure out what caused the process to peg out like that?
Thanks,
-Bryan