Hello:
I've been trying to do some performance testing for a client and can't seem to
get the dm-cache warmed. The values displayed in the "dmsetup status" command
seem too low. I've been trying to use the "raw" devices setup for the cache and
NOT use a file system or database. I've tried sequential writes/reads to the
devices (ie. dd ) and dividing up the space to be tested and do I/O over a
number of segments to try to break any sequential I/O tests. Any ideas as to
what I may doing wrong? Do I need to randomize the I/O?
System: RHEL 7.0 Alpha3, 3.9.7 kernel
Thanks in advance..
--
Dave Pitts PULLMAN: Travel and sleep in safety and comfort.
dpitts@xxxxxxxx
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