On 01/11/2013 03:07 PM, Arnold Krille wrote:
BTW: Its nice to see high throughput with dd copying big files. But
thats not what your users will do, they will do lots of small reads
at many different locations. So instead of tuning the throughput
spend that time tuning the latency. Thats what your users will
percieve as the speed of the system.
Totally.
To that end, a couple oft-overlooked settings:
disk {
c-fill-target 3M;
}
net {
max-buffers 128k;
}
Basically telling DRBD that it's actually on a 10Gb link. Our stats all
went way up after this, as did our verify and sync speeds.
--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-676-8870
[email protected]
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