Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Wed, 30 Jul 2008, nathan at robotics.net wrote: > What is the max performance anyone has seen with DRBD? With the default > config I am seeing 80 MB/s write and 159 MB/s read. I googled around and > found Florian's blog and set al-extents 3833, max-buffers 8192, > unplug-watermark 128 and was able to get that up to 118 MB/s write and 180 > MB/s read. Hate to reply to my own post, but wanted to show that I am getting 2.19 Gbits/sec between hosts over Infiniband and reads from device DRBD is using is 543 MB/s. [root at xen1 src]# iperf -c 172.16.0.220 ------------------------------------------------------------ Client connecting to 172.16.0.220, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 3] local 172.16.0.221 port 33300 connected with 172.16.0.220 port 5001 [ 3] 0.0-10.0 sec 2.54 GBytes 2.18 Gbits/sec [root at xen0 src]# sync ;dd if=/dev/sdb of=/dev/null bs=4096 count=1M 1048576+0 records in 1048576+0 records out 4294967296 bytes (4.3 GB) copied, 7.91526 seconds, 543 MB/s ><> Nathan Stratton CTO, BlinkMind, Inc. nathan at robotics.net nathan at blinkmind.com http://www.robotics.net http://www.blinkmind.com