iscsi performance to a RAM disk iscsi target using the same fio parameters, yields a 1GB/second throughput for both read and write operations, compared to about 400(r)/400(w) MB/second using an RBD based backend over a 10GB link.
My fio job file looks like this (change 'randread' to 'randwrite' for the write test and modify the filename device to switch between the ramdisk and rbd). [default] rw=randread size=10g bs=1m ioengine=libaio direct=1 numjobs=1 filename=/dev/sdb runtime=600 write_bw_log=iscsiread iodepth=256 iodepth_batch=256 -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/open-iscsi. For more options, visit https://groups.google.com/d/optout.
