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тАО11-07-2002 12:33 PM
тАО11-07-2002 12:33 PM
This is a new install running sybase Direct Connect.
I see very high CPU usage.
%usr %sys %wio %idle
15:25:48 30 69 0 0
15:25:50 33 67 0 0
15:25:52 35 64 0 0
15:25:54 33 67 0 0
15:25:56 37 63 0 0
And sar -q gives
runq-sz %runocc
15:32:37 1.2 100 0.0 0
15:32:39 1.0 100 0.0 0
15:32:41 1.2 100 0.0 0
15:32:43 2.3 75 0.0 0
15:32:45 1.0 100 0.0 0
15:32:47 2.0 50 0.0 0
15:32:49 1.7 75 0.0 0
This is causing problems. I don't have glance on this box to get a clearer picture.
Any thoughts?
TIA
Solved! Go to Solution.
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тАО11-07-2002 12:38 PM
тАО11-07-2002 12:38 PM
Re: High CPU usage.
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тАО11-07-2002 01:05 PM
тАО11-07-2002 01:05 PM
SolutionI'm afraid that I don't know anything about Sybase - but I wouldn't heve thought it was normal behaviour?
I'd recommend installing the evaluation version of glance from the Apps CD.
Regards,
John
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тАО11-08-2002 06:54 AM
тАО11-08-2002 06:54 AM
Re: High CPU usage.
I am not a database guru, but I have heard that Sybase uses busy-waits. Which means that is chews up CPU while it is waiting for work to do. I mention this only because this could indeed be normal behavior.
Dan
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тАО11-08-2002 08:25 AM
тАО11-08-2002 08:25 AM
Re: High CPU usage.
HTH
Marty
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тАО11-08-2002 08:30 AM
тАО11-08-2002 08:30 AM
Re: High CPU usage.
Sybase is very much like any other rdbms product, it will usually grab as much cpu as it can. Oracle does the same thing, so does informix.
As others have suggested here, download or load from application cd #1 the trial version of glance plus/pak for series 800 machines. At least you will get to use the product for 60days and then you might be able to get HP to give you an extension on it. During that time you should try to convince management that this is a worthwhile product to buy as it does present lots of nice metrics to report on, can be used also to make lots of nice reports for mgmt.
Gl 2u
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тАО11-08-2002 09:08 AM
тАО11-08-2002 09:08 AM
Re: High CPU usage.
If this database is the only thing running on this system, the fact that it is chewing CPU looking for something to do probably isn't an issue. If you have other workloads on the system, you can use our PRM and/or WLM products to control how much CPU is wasted by Sybase and ensure that the other workloads get the cycles they need as well. If you want more details on those products, let me know.
Dan