From: jonathan (jengbrec@ryerson.ca)
Date: Wed Sep 26 2007 - 16:54:22 EDT
hello sunmanager-folk, a puzzle i hope you can shed some light on:
I have two systems, built at different times, but running very similar
software configurations (same hardware, patch rev). They *should* have
near-identical load, as they are performing the same function in
parallel behind a load balancer.
However: system#2 is noticeably and consistently slower than system#1
(both are under high load):
# sar -p 2 5
SunOS *system#1* 5.10 Generic_125100-10 sun4u 09/26/2007
14:47:32 atch/s pgin/s ppgin/s pflt/s vflt/s slock/s
14:47:34 28.77 0.00 0.00 3439.18 196.59 0.00
14:47:36 23.69 0.00 0.00 2989.68 289.74 0.00
14:47:38 25.76 0.00 0.00 3312.57 270.75 0.00
14:47:40 17.61 0.00 0.00 1456.07 230.99 0.00
14:47:42 16.02 0.00 0.00 1474.72 140.62 0.00
Average 22.37 0.00 0.00 2534.78 225.69 0.00
# sar -p 2 5
SunOS *system#2* 5.10 Generic_125100-10 sun4u 09/26/2007
14:45:51 atch/s pgin/s ppgin/s pflt/s vflt/s slock/s
14:45:53 371.08 0.00 0.00 19009.31 1405.88 0.00
14:45:55 55.12 0.00 0.00 124.88 454.63 0.00
14:45:57 381.28 0.00 0.00 15695.57 993.60 0.00
14:45:59 149.51 0.00 0.00 19591.18 1829.90 0.00
14:46:01 125.00 0.00 0.00 12613.73 1639.71 0.00
Average 216.08 0.00 0.00 13391.67 1264.22 0.00
system #2 has a zfspool and a few (zfs) filesystems, which system#1
doesn't have. Otherwise, I'm unsure of what might be causing this.
Thoughts on what I should be looking at?
much thanks,
Jonathan.
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