I'm setting up a AoE-based SAN, and I'm not quite sure I've reached a good performance level.
I can read and write the raw AoE device (/dev/etherd/*) at more or less line-speed on my 1gig Ethernet adapters. This means I'm seeing I/O rates of 100 to 120 MB/s when using dd or something similar. However, when I put a filesystem on there, I'm seeing rates of 55 to 70 MB/s. I've tested mostly by using rsync, cp or dd, but I tried bonnie and saw much the same results. I've been testing mostly with ext4, but I saw pretty much the same performance with ext3. Since I'm testing sequential reads and writes, I was expecting the filesystem performance to be closer to line-speed than what I'm seeing now. Thanks to aoetools-discuss, I think I've got a pretty good configuration going, with MTU at 9000, flow control on the switch and some kernel tuning. Since I'm seeing line-speed when using the device directly, I guess this means that the configuration is more or less okay. What kind of performance are you guys seeing on your filesystems when using 1gig Ethernet adapters ? -- Vennlig hilsen Torbjørn Thorsen Utvikler / driftstekniker Trollweb Solutions AS - Professional Magento Partner www.trollweb.no ------------------------------------------------------------------------------ All of the data generated in your IT infrastructure is seriously valuable. Why? It contains a definitive record of application performance, security threats, fraudulent activity, and more. Splunk takes this data and makes sense of it. IT sense. And common sense. http://p.sf.net/sfu/splunk-d2d-c2 _______________________________________________ Aoetools-discuss mailing list Aoetools-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/aoetools-discuss
