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More kernel parameters

 
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TD Clark
Advisor

More kernel parameters

maxdsiz 6.71MB
maxdsiz_64bit 1.0737GB
swapmem_on 1
5 REPLIES 5
Hai Nguyen_1
Honored Contributor

Re: More kernel parameters

Todd,

Can you post the output file /tmp/kmtune.txt of the following command:

# /usr/sbin/kmtune -l > /tmp/kmtune.txt

Hai
TD Clark
Advisor

Re: More kernel parameters

Hai...thanks for the reply..here is my output from kmtune...
Hai Nguyen_1
Honored Contributor

Re: More kernel parameters

Todd,

Spotted the problem. It is dbc_max_pct which eats up 50% of your RAM. It does that so slowly that you could not find.

Normally, you should bring it down to 8% which is still greater than 300MB out of 5.5GB RAM since 300MB is the max recommended by HP.

if you have glance, you can run the following command to verify that is it:

# /opt/perf/bin/glance -m

and post the output.

Hai
Hai Nguyen_1
Honored Contributor
Solution

Re: More kernel parameters

Todd,

One more note. I guess that you have roughly 3GB swap space based on your kernel maxswapchunks setting (1532).

That is too low for your 5.5GB RAM. You need to increase your swap space to at least the size of your RAM in order for the system to utilize 100% of RAM. Otherwise, the OS will stop spawning new processes as soon as the swap space reaches 100% capacity.

Hai
TD Clark
Advisor

Re: More kernel parameters

Thanks Hai! I really appreciate your time on this issue. I'll make those changes tonight.