From: Reggie Beavers (reggiebeavers@fstha.com)
Date: Fri Aug 22 2003 - 08:32:06 EDT
Greetings Managers,
I have two servers running Solaris 8, with 4GB Ram and
2 CPUs each. Storage is on an EMC. Both servers run
Sybase (ASE 12.5) and perform the same function. The
DBA is having performance trouble from ServerB. What I
see is:
iostat -xn
ServerA
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
33.2 142.0 315.2 1803.3 7.9 1.3 45.0 7.4 5 15 c2t8d70
ServerB
449.6 4.8 19158.5 252.8 0.0 1.7 0.0 3.8 0 68 c2t1d59
I notice the high kilobytes/sec and %busy from ServerB
but I also notice that the disk appears to be keeping
up with the request (wsvc_t and asvc_t are low).
As far a memory goes ServerA is scanning for pages at
50 while ServerB is high, around 400! Both have 4GBs
of RAM.
Both servers are running the same apps and doing the
same function (Database updates). They are not
clustered.
I think the problem is related to why the shared
memory segments differ:
ipcs
ServerA
Shared Memory:
m 100 0x655e005a --rw------- sybase sybase
m 101 0x655e0094 --rw------- sybase sybase
ServerB
Shared Memory:
m 80600 0x65db0b93 --rw------- sybase sybase
m 80201 0x65db0b0f --rw------- sybase sybase
m 301502 0 --rw------- sybase sybase
m 301303 0 --rw------- sybase sybase
Has anyone seen a problem such as this?
Thanks for any help.
Regards,
-- Reggie Beavers Free High Availability Software for Solaris at www.fstha.com -- _______________________________________________ sunmanagers mailing list sunmanagers@sunmanagers.org http://www.sunmanagers.org/mailman/listinfo/sunmanagers
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