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Double your disk read performance in a single command

Terminal - Double your disk read performance in a single command
blockdev --setra 1024 /dev/sdb
2009-02-18 16:27:01
User: starchox
2
Double your disk read performance in a single command

(WARN) This will absolutely not work on all systems, unless you're running large, high speed, hardware RAID arrays. For example, systems using Dell PERC 5/i SAS/SATA arrays. If you have a hardware RAID array, try it. It certainly wont hurt.

You may be can test the speed disk with some large file in your system, before and after using this:

time dd if=/tmp/disk.iso of=/dev/null bs=256k

To know the value of block device parameter known as readahead.

blockdev --getra /dev/sdb

And set the a value 1024, 2048, 4096, 8192, and maybe 16384... it really depends on the number of hard disks, their speed, your RAID controller, etc. (see sample)

Alternatives

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Terminal - Alternatives

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What others think

hay q?a :D

Comment by quydo 72 weeks and 2 days ago

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