Greg Zartman via smartos-discuss wrote:
On Sun, Jan 18, 2015 at 11:25 PM, Peter Toth <[email protected]
<mailto:[email protected]>> wrote:
Just for reference:
I have tested an Intel DC 3500 SSD as an slog device today - from
a CentOS KVM guest doing dd with 64k block size.
Average write speed 270MB/s - I think that speaks for itself.
Wow, yea that sounds more like it. Couple questions:
1. Did you do a write big enough to make sure you weren't just writing
RAM?
2. What's you zpool config and what kind of hardware you running?
That is, what kind of vdevs do you have?
Those aren't my numbers, but if you look at the windows numbers I posted
on "slow virtio" thread, you will see I got better than an order of
magnitude improvement adding log devices.
https://github.com/joyent/smartos-live/issues/320
--
Ian.
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