Comments on: How To: Double Linux disk read performance with readahead parameter

By: Gabriel Ramuglia

Gabriel Ramuglia — Tue, 18 Jan 2011 04:41:45 +0000

What’s reported in robert’s post is useful, but not syntactically accurate, as it’s missing a -

The command I use is typically:

blockdev –setra 1024 /dev/sda

for a 512kb readahead

By: robert beck

robert beck — Fri, 20 Aug 2010 01:04:03 +0000

blockdev -setra xxx
e.g. blockdev -setra 1024 /dev/sda

Also try /etc/sysctl.conf:
/sys/bus/scsi/drivers/sd/[DEVICEID]/block/queue/read_ahead_kb

By: Joe Roadkill

Joe Roadkill — Mon, 10 May 2010 08:59:40 +0000

Hey, this blog entry is USELESS because the link is now roadkill on the information super highway. If you had at least included the exact name of the readahead parameter then this page – which comes up right at the top of a google search for “linux readahead” would actually be useful.

By: Seb

Seb — Tue, 18 Dec 2007 08:44:19 +0000

Very interesting