Take the 2-minute tour ×  Here are the resuts of running IOZone
on an ext3 filesystem on an LVM volume residing on a SAN LUN (it
was ran with 5 parallel processes).  "Throughput report Y-axis
is type of test X-axis is number of processes" "Record size = 4
Kbytes " "Output is in Kbytes/sec"  " Initial write " 81628.55
" Rewrite " 83354.72  " Read " 115595.02  " Re-read " 119306.09
" Reverse Read " 47684.20  " Stride read " 10011.09  " Random
read " 16751.27  " Mixed workload " 5659.77  " Random write "
1661.85  " Pwrite " 36030.83  Now this is all nice and dandy,
but my question is: how do I know whether the values are as good
as they could be or there is something to tweak (and if so,
what?)  The actual usage I will have for that Logical Volume is
to act as virtual disk for a VM.  share|improve this question I
get better results from this off an amazon virtual machine
instance using ceph with 16 clients. I think there is something
wrong with your setup. –  Matt Aug 27 '13 at 9:19 add comment  2
Answers  Ok,