Chris Cox schrieb:
(...)
LVMS=$(/bin/ls /dev/$HOSTNAME/)
for LVM in $LVMS
do
blockdev --setra 16384 /dev/$HOSTNAME/$LVM
done
Hmmm, perhaps for iSCSI. But using fibre SAN, I saturate my
2Gbps link (almost 200MB/sec).
I check my local drives, they all use the default 1024....
Is setting the read ahead that big of a deal with just LVM?
I would think if it's an issue, it's an issue everywhere.
For me, the default was 256.
I use that big readahead after a bit of benchmarking; perhaps it's very
specific to my setup.
--
Tomasz Chmielewski
http://wpkg.org
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