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тАО02-10-2009 02:36 PM
тАО02-10-2009 02:36 PM
When total swap is 100% as shown by swapinfo -tam won't new processes fail to start? I have 32 GB main memory, 16 GB swap, and pseudo swap enabled. Free memory is 4 GB and dbc max is set to 5%. Here's the output:
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 16384 0 16384 0% 0 - 1 /dev/vg00/lvol2
reserve - 16384 -16384
memory 26327 22056 4271 84%
total 42711 38440 4271 90% - 0 -
Even though the server is not swapping I'm sure I've seen processes fail to start when total=100%. Our policy is not to create swap space on SAN so I'm going to install a 72 GB boot disk with 40 GB of swap space.
Thanks in advance,
Jim
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 16384 0 16384 0% 0 - 1 /dev/vg00/lvol2
reserve - 16384 -16384
memory 26327 22056 4271 84%
total 42711 38440 4271 90% - 0 -
Even though the server is not swapping I'm sure I've seen processes fail to start when total=100%. Our policy is not to create swap space on SAN so I'm going to install a 72 GB boot disk with 40 GB of swap space.
Thanks in advance,
Jim
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тАО02-10-2009 03:01 PM
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тАО02-10-2009 06:23 PM
тАО02-10-2009 06:23 PM
Re: Another HP-UX swap question
yes
You could put dbc_max down to 3
that would still be 1 GB or so of dbc before it shrinks when memory is full.
You could add filesystem swap with a priority of 2 so you have more swapspace on non-san
filesystem swap is better than nothing.
You could put dbc_max down to 3
that would still be 1 GB or so of dbc before it shrinks when memory is full.
You could add filesystem swap with a priority of 2 so you have more swapspace on non-san
filesystem swap is better than nothing.
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тАО02-10-2009 07:36 PM
тАО02-10-2009 07:36 PM
Re: Another HP-UX swap question
I am planning to decrease dbc max, 3% sounds about right.
FS swap is an option but maybe I'll get my outage to install the larger boot drive first.
Thanks to both,
Jim
FS swap is an option but maybe I'll get my outage to install the larger boot drive first.
Thanks to both,
Jim
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