[rescue] RAID q - lots of 8K transactions

Kevin Loch kloch at gurunet.net
Fri Jun 20 11:19:55 CDT 2003

Curtis H. Wilbar Jr. wrote:
> You can adjust your stripe size of course, and in this case, 8KB may
> be the optimum.  You probably will want to use a trans device if this is
> a big file system, so should it go down and come back up it will do so
> quickly rather than a long fsck check.  Although how that will impact
> your transactions I don't know (probably will only have an impact on
> writes.... but the trans might speed those up as it will get written to
> the trans device then ODS will "flush" the trans to the striped mirrors
> (configured as mirrored stripes)....

I found that enabling trans on a disksuite raid with heavy
writes gives a noticable performance penalty.  HW raid
and trans would be the best bet.  YMMV


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