Still on the performance+sysstat topic, I found useful to use “sar -ruq” to obtain memory, cpu and runqueue stats in one
command
root@kraftek:~# sar -ruq 3 10000
Linux 2.6.21.5-smp (kraftek) 02/15/2008
06:51:28 PM CPU %user %nice %system %iowait %steal %idle
06:51:31 PM all 97.01 0.00 2.99 0.00 0.00 0.00
06:51:28 PM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree kbswpused %swpused
kbswpcad
06:51:31 PM 32528 866560 96.38 42564 178940 0 0 0.00 0
06:51:28 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15
06:51:31 PM 1 256 1.85 2.01 1.37
06:51:31 PM CPU %user %nice %system %iowait %steal %idle
06:51:34 PM all 96.67 0.00 3.33 0.00 0.00 0.00
06:51:31 PM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree kbswpused %swpused
kbswpcad
06:51:34 PM 32156 866932 96.42 42624 178940 0 0 0.00 0
06:51:31 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15
06:51:34 PM 1 256 1.85 2.01 1.37
Nmon
To add to our previous performance post, we can equip our linux server with nmon, from IBM.
I’m not an IBM fan, this is free, but closed source!!!, despite this, it looks good, get it at:
http://www-941.haw.ibm.com/collaboration/wiki/display/WikiPtype/nmon
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