topic Re: How to increase active virtual memory in Operating System - HP-UX

How to increase active virtual memory

szhiyong — Sat, 10 Aug 2002 23:27:45 GMT

Hi,

I am not sure how to increae the active virtual memory. I increase the swap space as 1GB now, but I do not see the increase of the active virtual memory. The statistics in my workstation is:
Memory Stat total used avail %used
physical 768.0 419.9 348.1 55%
active virtual 336.3 321.8 14.6 96%
active real 265.5 249.5 15.9 94%
memory swap 588.1 53.7 534.4 9%
device swap 1512.0 383.2 1128.8 25%

Would someone tell me how to increase active virtual memory?

Thanks a lot.

zhiyong

Re: How to increase active virtual memory

Bill Hassell — Sun, 11 Aug 2002 00:51:37 GMT

Start running more programs. Active virtual memory means memory that has been allocated. If there is nothing that needs more memory, then active virtual won't change. The swapinfo -tm command will be of use here.

Re: How to increase active virtual memory

Fragon — Sun, 11 Aug 2002 05:33:22 GMT

Hi zhiyong:
I think this may take effect.
=====Check dbc_min_pct & dbc_max_pct=====
#sysdef
...
dbc_max_pct 10
dbc_min_pct 5
...
=========================================
Tuning your dbc_max_pct to 60 & dbc_min_pct to 30(This can be done by SAM, you should reboot your mechine),and see your memory state again!

Good lucy!
-Gerald-

Re: How to increase active virtual memory

Fragon — Sun, 11 Aug 2002 05:33:30 GMT

Re: How to increase active virtual memory

eran maor — Sun, 11 Aug 2002 09:47:10 GMT

Hi

i will lisen to bill advise , i will not change the size of the kernel param dbc_max_pct because it mean to take memory and to put it for use of the buffer cashe and it doesnt seem to be for this use .

like bill said if you want to deincrease the size of the active virtual memory just active more memory that the active vitual memory will deincrease in size

Re: How to increase active virtual memory

szhiyong — Mon, 12 Aug 2002 20:52:19 GMT

Hi,

Thanks a lot for help.

zhiyong