Quote:
Originally Posted by borked
For the moment whatever card is in there (can't find it with dmidecode - is there another tool to check with?), the IO wait is very respectable for peak times.
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lspci should show you what cards are currently installed.
Are you using lvm to concatenate the sdd and sdc together? or are they separate? It looks like it is, once you cross the barrier of the disk usage on the sdd and cross into disk space on the sdc partition/set you will see a breath of fresh air, currently your supporting the disk IO on one raid set. I could be wrong but thats what it looks like.
Disk contention is overcame by usually creating smaller raid sets on large spindle sizes, i.e 8x groups of 6 drives and if you concatenate them via lvm as you add content it will spread to different spindles. Once data is contained and "cached" via the system it wont seek them since it knows where they are on that raidset. + you can utilize the platters more efficiently because you have now 8 sets of disks doing various IO tasks vs 1-2 sets doing the same task. MUCH better disk IO/throughput that way.