[SunHELP] A1000 cache memory

[Kovalev, Ivan]

For this type of questions your best bet is to consult Adrian Cockcroft from
Sun ("Sun performance and Tuning" book, or online at
http://www.sun.com/sun-on-net/performance/ ).

It is most common to bypass RAID's cashe on reads (it is too small anyway)
and enable it for writes. This is safe only if you have BBU (battery). This
might give you a significant boost depending on application. For example,
2-Kb raw writes during database load can go 2-3 times faster.

Ivan

-----Original Message-----
From: Tom Lieuallen [mailto:toml at engr.orst.edu]
Sent: Thursday, March 08, 2001 10:28 PM
To: sunhelp at sunhelp.org
Subject: [SunHELP] A1000 cache memory



We have a number of A1000's with the default of 24MB cache memory.
They are used as home directory and applications storage for
an environment with several thousand users..  Busy.

There is an option to add an additional 64MB of cache memory, but it is
spendy.  $1,250 list price.  Any words from the wise about whether it
is worth the investment?

thank you

Tom Lieuallen
Oregon State University
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