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02-26-2012 01:49 AM
02-26-2012 01:49 AM
file-cache queries
Hi,
i have some queries.
Our server:
1) BL860c i2
2) HP-UX 11.31
3) 32GB RAM
4) filecache_max = default (50%)
5) filecache_min = default (5%).
When the system needs to use the filecache memory ?
And the current value of filecache_max it's default, Does this mean the system reserved 16 GB for filecashe
and are not used for anything else ?
Total VM : 35.2gb Sys Mem : 12.4gb User Mem: 10.3gb Phys Mem : 31.9gb
Active VM: 34.4gb Buf Cache: 0mb Free Mem: 160mb FileCache: 9.1gb
MemFS Blk Cnt: 0 MemFS Swp Cnt: 0
Thanks
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02-26-2012 06:50 AM
02-26-2012 06:50 AM
Re: file-cache queries
>4) filecache_max = default (50%)
That's most likely way to much, especially if you are using Oracle.
>When the system needs to use the filecache memory?
When it wants to cache pages to speed up I/O.
>Does this mean the system reserved 16 GB for filecache
Up to 16 Gb but it is currently only using 9.1gb.
is not used for anything else?
If there is memory pressure for swap, it can be reduced to the min.