Messages in this thread | | | Date | Thu, 20 Feb 2003 13:48:33 +0100 | From | Dejan Muhamedagic <> | Subject | Re: vm issues on sap app server |
| |
Rik,
On Wed, Feb 19, 2003 at 08:08:01PM -0300, Rik van Riel wrote: > On Wed, 19 Feb 2003, Dejan Muhamedagic wrote: > > > cache. Is it possible to reduce the amount of memory used > > for cache? > > Yes, you can reduce the size of the cache above which the > pageout code will only reclaim cache and not application > data. To set the percentage to 10% (from the default 5%): > > echo 1 10 > /proc/sys/vm/pagecache
Will that work with rmap15d? The code seems to support only min and borrow parameters. Correct me if I'm wrong. This is what it looks like currently:
# cat /proc/sys/vm/pagecache 1 3 20 # mem | grep Cache Cached: 4569128 kB SwapCached: 829668 kB ActiveCache: 136728 kB
> > > Finally, there's a third SAP app server, an RS6000 running > > AIX with the same amount of memory, which seems to be more > > stable under various loads. > > In that case you're probably familiar with the cache size > tuning, since AIX has the exact same tuning knob as rmap ;)
AIX vmtune -P is equivalent to the Linux cache-max, but cache-max is not implemented.
Cheers!
Dejan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |