>>>>> "JAR" == J Andrew Rogers <jrogers@neopolitan.com> writes:
JAR> The LSI MegaRAID reading/writing/caching behavior is user configurable.
JAR> It will support both write-back and write-through, and IIRC, three
JAR> different algorithms for reading (none, read-ahead, adaptive). Plenty
JAR> of configuration options.
For PG max performance, you want to set it for write-back and
read-ahead (adaptive has been claimed to be bad, but I got similar
performace from read-ahead and adaptive, so YMMV).
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Vivek Khera, Ph.D. Khera Communications, Inc.
Internet: khera@kciLink.com Rockville, MD +1-301-869-4449 x806
AIM: vivekkhera Y!: vivek_khera http://www.khera.org/~vivek/
