Fellows,
The title may not be true, but on a 3 node TruCluster we have
seen a serious slowdown after the latest upgrade which
included the following:
- Upgrade cache on two dual HSG80's, from 64 to 256 MB,
both pairs in multibus failover.
- Doubled memory on one node (ES40) to 4 GB
- Upgrade to latest FW on KGPSA's (dual on all nodes)
- Installed Patch-kit 3 for Tru64 / TruCluster V5.1
Almost immediately after the upgrade the slowdown was seen, this
cluster runs a bunch of Oracle DB's and Oracle App's. Soon afterwards
a slowdown was also seen on backup which is a clustered Networker 6.01
installation on two of the nodes. Here it is possible to get figures;
before the upgrade, the backup was running at about 6 MB/s, but now
we are seeing close to 1 MB/s. This lead to problems with the backup
window, and at the moment backup is the biggest problem. Compaq has
the ball, and so far they have reduced the HSG80's cache back to the
previous
amount, and deinstalled the ES40 memory upgrade, but the slowdown persist.
The next thing on the list may be rolling back to PK1, or may be going
back on KGPSA FW, but all what I have read so far indicate that all we
did in the first place should improve performance.
I feel a bit stuck here...
Regards
Hallstein Lohre
Alpha System AS
Trondheim
Norway
Received on Thu Jun 21 2001 - 07:57:13 NZST