[CentOS-docs] wiki page edit request HowTos/Disk_Optimization

Mon Jan 5 23:09:34 UTC 2009
pjwelsh <pjwelsh at gmail.com>

Not to nitpick toooo much, I had the opportunity to play follow along
with this page and it is still needs help:
"You divide the chunk size by the block size..." BUT then has "(chunk
size * block size)". The "*" should be "/".

The example for RAID 5 is fine, but the RAID 10 example sentence may be
better after the code example as to not confuse a reader for which of
the 2 options the code is for.

The mkfs.ext3 command exampled is not supported in CentOS 4 or 5 . The
"-E stripe-width=48" is not allowed according the "man mkfs.ext3".

If examples of performance improvements could be added like:

#sync ; time dd if=/dev/sdc1 of=/dev/null bs=1M count=20480

(default mkfs.ext)
221474836480 bytes (21 GB) copied, 126.272 seconds, 170 MB/s
real    2m6.275s

(stride tweak only)
21474836480 bytes (21 GB) copied, 107.209 seconds, 200 MB/s
real    1m47.212s