 | | | What is using the memory | What is using the memory 2007-06-27 - By George Thompson
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Running RHEL4
We are uing weblogic which has three java proceses. The sum of the
percentage memory used of these processes is about 42% .
ps -aux | grep java | gawk '{ print $11, $4}'
/opt/od-home/OpenDeployNG/jre/bin/java 0.3
/opt/java/liveJava/bin/java 24.2
/opt/java/liveJava/bin/java 18.1
If I do ps -aux and add up all the %cpu coulums it totals about 45%. Yet
when i look at sar -r
sar -r | gawk '{ print $1, $2, $5}' | head
12:00:01 AM %memused
12:10:01 AM 99.76
12:20:01 AM 99.72
It seems to think the memory is 99% used. But I cant see any other
processes in the process table using any significant memory.
Here is the contents of /proc/meminfo . I dont fully understand what all
the entries mean.
[root@(protected)]/etc# cat /proc/meminfo
MemTotal: 8164748 kB
MemFree: 164748 kB
Buffers: 108356 kB
Cached: 478412 kB
SwapCached: 38628 kB
Active: 3690740 kB
Inactive: 409064 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 8164748 kB
LowFree: 164748 kB
SwapTotal: 16779884 kB
SwapFree: 16643592 kB
Dirty: 2508 kB
Writeback: 0 kB
Mapped: 3529560 kB
Slab: 185824 kB
CommitLimit: 20862256 kB
Committed_AS: 7658544 kB
PageTables: 13484 kB
VmallocTotal: 536870911 kB
VmallocUsed: 271300 kB
VmallocChunk: 536599035 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 2048 kB
[root@(protected)]/etc#
Our customer is asking us to explain what is using the memory and we have
no answer.
George
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