Hello, Recently Intel and Microsoft demonstrated pushing over 1.25 million IOPS using software iSCSI and a single 10 Gbit NIC: http://communities.intel.com/community/wired/blog/2010/04/22/1-million-iops-how-about-125-million
Earlier they achieved one (1.0) million IOPS: http://blog.fosketts.net/2010/01/14/microsoft-intel-push-million-iscsi-iops/ http://communities.intel.com/community/openportit/server/blog/2010/01/19/1000000-iops-with-iscsi--thats-not-a-typo The benchmark setup explained: http://communities.intel.com/community/wired/blog/2010/04/20/1-million-iop-article-explained http://dlbmodigital.microsoft.com/ppt/TN-100114-JSchwartz_SMorgan_JPlawner-1032432956-FINAL.pdf So the question is.. does someone have enough new hardware to try this with Linux? Can Linux scale to over 1 million IO operations per second? Intel and Microsoft used the following for the benchmark: - Single Windows 2008 R2 system with Intel Xeon 5600 series CPU, single-port Intel 82599 10 Gbit NIC and MS software-iSCSI initiator connecting to 50x iSCSI LUNs. - IOmeter to benchmark all the 50x iSCSI LUNs concurrently. - 10 servers as iSCSI targets, each having 5x ramdisk LUNs, total of 50x ramdisk LUNs. - iSCSI target server also used 10 Gbit NICs, and StarWind iSCSI target software. - Cisco 10 Gbit switch (Nexus) connecting the servers. - For the 1.25 million IOPS result they used 512 bytes/IO benchmark, outstanding IOs=20. - No jumbo frames, just the standard MTU=1500. They used many LUNs so they can scale the iSCSI connections to multiple CPU cores using RSS (Receive Side Scaling) and MSI-X interrupts. So.. Who wants to try this? :) I don't unfortunately have 11x extra computers with 10 Gbit NICs atm to try it myself.. This test covers networking, block layer, and software iSCSI initiator.. so it would be a nice to see if we find any bottlenecks from current Linux kernel. Comments please! -- Pasi -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to open-is...@googlegroups.com. To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/open-iscsi?hl=en.