Comments on: Fast storage: 8 SSD Intel X-25M 80GB benchmarks

By: Alain Draet

Alain Draet — Sun, 15 Jan 2012 03:32:12 +0000

Hi vadim,

thanks for putting ou those test.
I was wondering though. Do you consider the performance of SSD drive with Mysql better than regular HDD?
(seems like a too basic question may be, sorry

Thanks a lot

Alain

By: Jos van Dongen

Jos van Dongen — Mon, 01 Feb 2010 13:26:08 +0000

For those interested, I ran into another X-25M vs FusionIO benchmark: http://hothardware.com/Articles/Fusionio-vs-Intel-X25M-SSD-RAID-Grudge-Match/?page=1

best, Jos

By: Digital

Digital — Thu, 28 Jan 2010 18:57:52 +0000

Is it possible to try this setup under FreeBSD 8?

By: Patrick Kane

Patrick Kane — Thu, 21 Jan 2010 20:48:31 +0000

The reason sequential writes stunk was –file-extra-flags=direct. Rerun the benchmarks without it and you’ll see much better performance (257MB/sec across a 22 drive 25-M raid-10 array, here — not great, but decent).

By: Vadim

Vadim — Wed, 20 Jan 2010 22:25:12 +0000

Vlad,

If look on SSD (and recent FusionIO benchmarks), they usually do not like sequential writes.

By: Vlad Rodionov

Vlad Rodionov — Wed, 20 Jan 2010 22:18:28 +0000

How come sequential writes slower than random ones? Even single X-25M can do 80MB per sec. Something is wrong with your setup.

By: Vojtech Kurka

Vojtech Kurka — Tue, 19 Jan 2010 19:43:23 +0000

Vadim, thank you!

By: Vadim

Vadim — Tue, 19 Jan 2010 19:41:50 +0000

Vojtech,

Intel SSDs was used with enabled write cache, that is not in durable mode.

FusionIO says it works in durable mode by default in latest drivers (which I use).

By: Vojtech

Vojtech — Tue, 19 Jan 2010 12:16:07 +0000

Vadim,

did you use the drives and FusionIO in durable mode? I mean this:

http://www.mysqlperformanceblog.com/2009/03/02/ssd-xfs-lvm-fsync-write-cache-barrier-and-lost-transactions/
http://www.mysqlperformanceblog.com/2009/06/15/testing-fusionio-strict_sync-is-too-strict/

I’m sorry if I overlooked it, but I can’t find any note concerning this in the test results.

By: Vojtech Kurka

Vojtech Kurka — Tue, 19 Jan 2010 12:00:07 +0000

Vadim,

did you use the drives and FusionIO in durable mode? I mean this:

http://www.mysqlperformanceblog.com/2009/03/02/ssd-xfs-lvm-fsync-write-cache-barrier-and-lost-transactions/
http://www.mysqlperformanceblog.com/2009/06/15/testing-fusionio-strict_sync-is-too-strict/

I’m sorry if I overlooked it, but I can’t find any note concerning this in the test results.