From: JESSE CARROLL (jesse-carroll@usa.net)
Date: Wed Apr 17 2002 - 08:53:16 EDT
We have 6800's in a 2-way cluster (Sun Cluster 3.0) with 18 CPU's and 48G of
memory to which we are moving an existing application of ~800G of data. While
doing the restore we found that 1)VxFS was about 1/8 the speed of UFS and 2)
that free memory dropped to about 300M (yes 300M). If we aborted the restore
it took over 30 minutes before the disks stopped writting, apparently because
the system was flushing the over 40G of memory to disks (T3+). We are
investigating changing the disk layout but my real question is about tuning
the system for the large memory model. The current literature talks about
large memory as less that 10G and really doesn't discuss Solaris 8. Has
anyone have CURRENT literature that discusses the new large memory systems
(i.e. large E10K's,6800's, 12K's and 15K's) running Solaris 8? I find
information about settings for fastscan, handspreadpages, maxpgio, autoup and
others but each seems to be for Solaris 7 and older.
As a side note, once we get the data loaded these puppies scream.
JC
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