Messages in this thread | | | Date | Wed, 02 Sep 2009 15:23:31 -0400 | From | Bill Davidsen <> | Subject | Re: LowFree pattern |
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Adayadil Thomas wrote: > Greetings. > > I am running a centos linux with 2.6.20 version kernel. The system has > 1G of RAM. > > As time goes by the LowFree becomes really low. Right now it shows > 137M .. but it goes as low as 8M or so > > The command - > echo 3 > /proc/sys/vm/drop_caches > brings back the LowFree to way up high. > > The question I have is whether the system by itself release the cache > (drop cache) automatically > to maintain a reasonable LowFree? > Is this configurable? > You can change the parameters in /rpoc/sys/vm if you wish, but what makes you think this is needed? Cache is dropped as memory is needed, and drop_cache in general is a good way to slow the system.
> Any information or help is much appreciated. > What problem did you see that you traced to LowFree?
> > cat /proc/meminfo > MemTotal: 1034788 kB > MemFree: 138240 kB > Buffers: 99260 kB > Cached: 177776 kB > SwapCached: 51740 kB > Active: 605172 kB > Inactive: 113572 kB > HighTotal: 130720 kB > HighFree: 252 kB > LowTotal: 904068 kB > LowFree: 137988 kB > SwapTotal: 1048568 kB > SwapFree: 976332 kB > Dirty: 380 kB > Writeback: 0 kB > AnonPages: 441348 kB > Mapped: 15540 kB > Slab: 146088 kB > SReclaimable: 104288 kB > SUnreclaim: 41800 kB > PageTables: 1596 kB > NFS_Unstable: 0 kB > Bounce: 0 kB > CommitLimit: 1565960 kB > Committed_AS: 590576 kB > VmallocTotal: 114680 kB > VmallocUsed: 15052 kB > VmallocChunk: 99348 kB
-- Bill Davidsen <davidsen@tmr.com> "We have more to fear from the bungling of the incompetent than from the machinations of the wicked." - from Slashdot
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