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тАО04-18-2006 08:50 AM
тАО04-18-2006 08:50 AM
Performance problem with Informix IDS 9.40 and HPUX 11i
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тАО04-18-2006 09:13 AM
тАО04-18-2006 09:13 AM
Re: Performance problem with Informix IDS 9.40 and HPUX 11i
bottlenecks. You should be doing the the same with perfomance tools like Glance to find out if your are disk bound, memory bound, or CPU bound. Are you seeing significant page-out rates because the DBA's grabbed too much shared memory? Have you "improved" the timeslice value recently? These are things you should be telling me rather than me having to ask.
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тАО04-19-2006 12:04 AM
тАО04-19-2006 12:04 AM
Re: Performance problem with Informix IDS 9.40 and HPUX 11i
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тАО04-19-2006 12:18 AM
тАО04-19-2006 12:18 AM
Re: Performance problem with Informix IDS 9.40 and HPUX 11i
If you really want to undo the patch install, then restore from your make_recovery tape. You did take one didn't you? If not, then try restoring your previous kernel to a new name, such as vmunix.kevin then reboot that kernel and try again.
The first patch is for vxfs. Because you said that your informix storage is raw LUNs, not on cooked files, then there won't be much i/o going through that patch code.
The second patch is a more likely candidate, but not for checkpoint times.
Check your fibrechannel stats using fcmsstat. Then check your sar disk stats during checkpoints. Is it a hot lun? Whats your scsi_max_queue_depth now and before? Have your luns changed controller paths now?
There are many possibilities still.
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тАО04-19-2006 12:23 AM
тАО04-19-2006 12:23 AM
Re: Performance problem with Informix IDS 9.40 and HPUX 11i
as both patches require reboot to activate, did you reboot after uninstall?
Also, why did you want to install the patches?
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тАО04-19-2006 01:22 AM
тАО04-19-2006 01:22 AM
Re: Performance problem with Informix IDS 9.40 and HPUX 11i
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тАО04-19-2006 01:23 AM
тАО04-19-2006 01:23 AM