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тАО07-31-2003 02:00 PM
тАО07-31-2003 02:00 PM
Hi,
I have an HP_UX 11.0 box that is running unidata 5.1. It has been trouble free for over a year. This last week it has started generating core files and throwing users out of the db. file core > core: core file from 'udt' - received SIGBUS. db folks had me increase semmni parmameter to 96 (was 64). Recompiled kernel and rebooted. Still getting the errors.
Thanks,
Rocky Lavoie
I have an HP_UX 11.0 box that is running unidata 5.1. It has been trouble free for over a year. This last week it has started generating core files and throwing users out of the db. file core > core: core file from 'udt' - received SIGBUS. db folks had me increase semmni parmameter to 96 (was 64). Recompiled kernel and rebooted. Still getting the errors.
Thanks,
Rocky Lavoie
Solved! Go to Solution.
3 REPLIES 3
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тАО07-31-2003 02:58 PM
тАО07-31-2003 02:58 PM
Solution
Hi Rocky,
You may still be hitting some kernel parameter limit. Can you post your /stand/system file and tell us what sort of server you have and the amount of RAM. Some folks here might be able to nail it if it is a kernel related problem.
Cheers!
You may still be hitting some kernel parameter limit. Can you post your /stand/system file and tell us what sort of server you have and the amount of RAM. Some folks here might be able to nail it if it is a kernel related problem.
Cheers!
Yesterday is history, tomorrow is a mystery, today is a gift. That's why it's called the present.
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тАО07-31-2003 03:24 PM
тАО07-31-2003 03:24 PM
Re: udt generates SIGBUS core error
Hi,
I have an HP 9000 L2000 with 2G ram running 11.0 64bit RP5450. /stand/system file attached.
I have an HP 9000 L2000 with 2G ram running 11.0 64bit RP5450. /stand/system file attached.
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тАО07-31-2003 04:29 PM
тАО07-31-2003 04:29 PM
Re: udt generates SIGBUS core error
Hi Rocky,
I would contact the application vendor (UNIDATA) and ask them to check out the core file. Get them working on the problem too :-)
Without knowing your environment, so take the suggestions with a grain of salt, I would tune a few things:
dbc_max_pct 20 (any value from 10 to 20). Don't let buffer cache have too much cuz it never appears to give it back.
maxfiles appears a little low
maxuprc appear a little low
nfile looks too high based on your other settings, so perhaps drop it to 8000 (even then I would think it would be too high)
semmni is usually defined as (nproc*2). Give it a bit more. Obviously don't go overboard. Start with 512. You may need to change other related parameters too, such as semmns. Don't be afraid to do so.
Remember, if it all goes bad, you can always boot from the previous kernel by interrupting the boot process and interacting with the ISL. Then type "hpux /stand/vmunix.prev"
Cheers!!
I would contact the application vendor (UNIDATA) and ask them to check out the core file. Get them working on the problem too :-)
Without knowing your environment, so take the suggestions with a grain of salt, I would tune a few things:
dbc_max_pct 20 (any value from 10 to 20). Don't let buffer cache have too much cuz it never appears to give it back.
maxfiles appears a little low
maxuprc appear a little low
nfile looks too high based on your other settings, so perhaps drop it to 8000 (even then I would think it would be too high)
semmni is usually defined as (nproc*2). Give it a bit more. Obviously don't go overboard. Start with 512. You may need to change other related parameters too, such as semmns. Don't be afraid to do so.
Remember, if it all goes bad, you can always boot from the previous kernel by interrupting the boot process and interacting with the ISL. Then type "hpux /stand/vmunix.prev"
Cheers!!
Yesterday is history, tomorrow is a mystery, today is a gift. That's why it's called the present.
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