Try remove the "data-integrity-alg"-line. I have experienced it as a
performance killer - and according to the documentation only meant for
initial testing of the system.
Best regards,
Bo
Bart Coninckx wrote:
On Friday 29 October 2010 21:23:27 wang xuchen wrote:
It is a 10G dedicated Ethernet connection.
Commit yourself to constant self-improvement
On Fri, Oct 29, 2010 at 3:12 PM, Bart Coninckx
<[email protected]>wrote:
On Friday 29 October 2010 20:31:03 wang xuchen wrote:
As I said in my first email. dd test on raw SSD device reaches almost
100MB/s with 4k block size(which is almost 26,000 IOPS). I apologize
that
I
haven`t mentioned the CPU utilization which is surprisingly low, all
worker
threads and receive threads consume less than 1% CPU individually. That
why
how I come up with the conclusion either my configuration is wrong or
DRBD
replication too slow.
Any suggestion is appreciated.
Ben
Commit yourself to constant self-improvement
On Fri, Oct 29, 2010 at 1:01 PM, J. Ryan Earl <[email protected]> wrote:
On Fri, Oct 29, 2010 at 11:13 AM, Julien Escario
<[email protected]>wrote:
Someone answered me that these preformances are perfectly normal is
dual
master configuration.
Someone told you wrong.
Seems to be due to the network latency (first server I/O + network
latency + second server I/O + network latency (ACK))
You should still be able to get much better than 97MB/sec. I get
over 800MB/sec with a dual-primary with a backing store capable of
~950 MB/sec.
I finally decided that DRBD is unusable in dual primary setup
because the performance drop.
You were using 8.0.16, you should have tried with 8.3.x, 8.3 seems to
do
dual-primary a lot better in general.
-JR
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And your DRBD network?
I read that, but did you test that you have 10G ?
B.
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