i use Proliant DL180 G5
i will suggest my company (leaseweb) to upgrade array firmware as i think i should not do it by myself
i didn't comment on connectivity, because i actually don't know. it's Leaseweb server, i'm just renting it, i don't know what are they practices.
Should i tell them to connect it differently? what exactly should i tell them?
i made changes only after problems started happening, not before
this is on OS level, and of course you are right. other important factors: millions of files on this hosting, extremely random read pattern.
maybe the array is not correctly created? chunk size too small/too big ?
is there any way to check if this is P400 slowing it down?
and yes, performance was not much better before, but it was better. so utilization was 70%-80%, but why it shoot up to 100% even though my traffic did not is very strange. (number of connections stable, number of webserver requests stable, no DoS attack, everything pretty much the same, only load average shoot up to 200 sometimes and simple things like touch or rm on array takes many seconds)
boot disk is not overloaded at all:
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util
cciss/c0d0 1.42 50.63 17.29 12.30 199.19 250.20 30.38 0.95 32.19 2.08 6.15
cciss/c0d1 460.52 31.71 184.62 9.37 3829.72 164.68 41.18 109.66 565.08 4.88 94.60
dm-0 0.00 0.00 17.73 63.00 198.44 251.98 11.16 2.93 36.25 0.76 6.14
dm-1 0.00 0.00 0.03 0.00 0.13 0.00 8.00 0.00 5.23 0.44 0.00
i don't know how well you can see this,but boot disk is pretty much idle
this is free hosting server, it doesn't run database for users (only for hosting panel) , but other than that it runs everything. so ftp, webserver, dns, mail etc.
is was working fine without any problems so far, it is nicely optimized. my traffic is actually lower now because of the problems, but this high load and crashes still remain
