---------------------- USER LEVEL PERFORMANCE ---------------------- If your system is correctly configured with GbE and a GHz processor, you should expect user level iSCSI performance similar to the following. This output was generated by running utest against a target running uramdisk. ##BEGIN DEVICE-SPECIFIC TESTS[0:0]## read_capacity PASSED write_read_test PASSED integrity_test PASSED SCSI op 0x28: 1000 iters in 0.24 sec --> 244.38 usec SCSI op 0x2a: 1000 iters in 0.25 sec --> 249.78 usec SCSI op 0x25: 1000 iters in 0.25 sec --> 250.12 usec 8192 bytes/request: 8 MB written in 0.33 seconds --> 24.35 MB/sec 16384 bytes/request: 8 MB written in 0.30 seconds --> 26.74 MB/sec 32768 bytes/request: 8 MB written in 0.20 seconds --> 39.06 MB/sec 65536 bytes/request: 8 MB written in 0.15 seconds --> 52.95 MB/sec 131072 bytes/request: 8 MB written in 0.12 seconds --> 66.74 MB/sec 262144 bytes/request: 8 MB written in 0.10 seconds --> 77.76 MB/sec 8192 bytes/request: 8 MB read in 0.37 seconds --> 21.34 MB/sec 16384 bytes/request: 8 MB read in 0.19 seconds --> 41.47 MB/sec 32768 bytes/request: 8 MB read in 0.13 seconds --> 62.04 MB/sec 65536 bytes/request: 8 MB read in 0.11 seconds --> 70.99 MB/sec 131072 bytes/request: 8 MB read in 0.10 seconds --> 83.62 MB/sec 262144 bytes/request: 8 MB read in 0.09 seconds --> 92.38 MB/sec ##END DEVICE-SPECIFIC TESTS[0:0]## ------------------------ KERNEL LEVEL PERFORMANCE ------------------------ Kernel level performance (ktest to kramdisk.o) should be similar to the output shown below. Note that this test does not go through the linux storage stack, but is rather a kernel level iSCSI test with no attached filesystem or SCSI midlayer. This output was generated by installing the module intel_iscsi.o and then running "ktest " where is one of your iscsi devices (e.g, /dev/sdb). Although you specify a single device on the command line, all target devices are tested. ##BEGIN DEVICE-SPECIFIC TESTS[0:0]## read_capacity PASSED write_read_test PASSED integrity_test PASSED SCSI op 0x28: 1000 iters in 25 jiffies --> 250 usec SCSI op 0x2a: 1000 iters in 25 jiffies --> 250 usec SCSI op 0x25: 1000 iters in 25 jiffies --> 250 usec 8192 bytes/request: 8388608 bytes written in 38 jiffies --> ~ 21 MB/second 16384 bytes/request: 8388608 bytes written in 38 jiffies --> ~ 21 MB/second 32768 bytes/request: 8388608 bytes written in 23 jiffies --> ~ 34 MB/second 65536 bytes/request: 8388608 bytes written in 16 jiffies --> ~ 50 MB/second 131072 bytes/request: 8388608 bytes written in 12 jiffies --> ~ 66 MB/second 262144 bytes/request: 8388608 bytes written in 10 jiffies --> ~ 79 MB/second 8192 bytes/request: 8388608 bytes read in 26 jiffies --> ~ 30 MB/second 16384 bytes/request: 8388608 bytes read in 20 jiffies --> ~ 39 MB/second 32768 bytes/request: 8388608 bytes read in 12 jiffies --> ~ 66 MB/second 65536 bytes/request: 8388608 bytes read in 12 jiffies --> ~ 66 MB/second 131072 bytes/request: 8388608 bytes read in 10 jiffies --> ~ 79 MB/second 262144 bytes/request: 8388608 bytes read in 9 jiffies --> ~ 88 MB/second ##END DEVICE-SPECIFIC TESTS[0:0]##