1 2---------------------- 3USER LEVEL PERFORMANCE 4---------------------- 5 6If your system is correctly configured with GbE and a GHz processor, 7you should expect user level iSCSI performance similar to the following. 8This output was generated by running utest against a target running uramdisk. 9 10##BEGIN DEVICE-SPECIFIC TESTS[0:0]## 11read_capacity PASSED 12write_read_test PASSED 13integrity_test PASSED 14SCSI op 0x28: 1000 iters in 0.24 sec --> 244.38 usec 15SCSI op 0x2a: 1000 iters in 0.25 sec --> 249.78 usec 16SCSI op 0x25: 1000 iters in 0.25 sec --> 250.12 usec 178192 bytes/request: 8 MB written in 0.33 seconds --> 24.35 MB/sec 1816384 bytes/request: 8 MB written in 0.30 seconds --> 26.74 MB/sec 1932768 bytes/request: 8 MB written in 0.20 seconds --> 39.06 MB/sec 2065536 bytes/request: 8 MB written in 0.15 seconds --> 52.95 MB/sec 21131072 bytes/request: 8 MB written in 0.12 seconds --> 66.74 MB/sec 22262144 bytes/request: 8 MB written in 0.10 seconds --> 77.76 MB/sec 238192 bytes/request: 8 MB read in 0.37 seconds --> 21.34 MB/sec 2416384 bytes/request: 8 MB read in 0.19 seconds --> 41.47 MB/sec 2532768 bytes/request: 8 MB read in 0.13 seconds --> 62.04 MB/sec 2665536 bytes/request: 8 MB read in 0.11 seconds --> 70.99 MB/sec 27131072 bytes/request: 8 MB read in 0.10 seconds --> 83.62 MB/sec 28262144 bytes/request: 8 MB read in 0.09 seconds --> 92.38 MB/sec 29##END DEVICE-SPECIFIC TESTS[0:0]## 30 31------------------------ 32KERNEL LEVEL PERFORMANCE 33------------------------ 34 35Kernel level performance (ktest to kramdisk.o) should be similar to the output 36shown below. Note that this test does not go through the linux storage stack, 37but is rather a kernel level iSCSI test with no attached filesystem or SCSI 38midlayer. 39 40This output was generated by installing the module intel_iscsi.o and then 41running "ktest <device>" where <device> is one of your iscsi devices (e.g, 42/dev/sdb). Although you specify a single device on the command line, all 43target devices are tested. 44 45##BEGIN DEVICE-SPECIFIC TESTS[0:0]## 46read_capacity PASSED 47write_read_test PASSED 48integrity_test PASSED 49SCSI op 0x28: 1000 iters in 25 jiffies --> 250 usec 50SCSI op 0x2a: 1000 iters in 25 jiffies --> 250 usec 51SCSI op 0x25: 1000 iters in 25 jiffies --> 250 usec 528192 bytes/request: 8388608 bytes written in 38 jiffies --> ~ 21 MB/second 5316384 bytes/request: 8388608 bytes written in 38 jiffies --> ~ 21 MB/second 5432768 bytes/request: 8388608 bytes written in 23 jiffies --> ~ 34 MB/second 5565536 bytes/request: 8388608 bytes written in 16 jiffies --> ~ 50 MB/second 56131072 bytes/request: 8388608 bytes written in 12 jiffies --> ~ 66 MB/second 57262144 bytes/request: 8388608 bytes written in 10 jiffies --> ~ 79 MB/second 588192 bytes/request: 8388608 bytes read in 26 jiffies --> ~ 30 MB/second 5916384 bytes/request: 8388608 bytes read in 20 jiffies --> ~ 39 MB/second 6032768 bytes/request: 8388608 bytes read in 12 jiffies --> ~ 66 MB/second 6165536 bytes/request: 8388608 bytes read in 12 jiffies --> ~ 66 MB/second 62131072 bytes/request: 8388608 bytes read in 10 jiffies --> ~ 79 MB/second 63262144 bytes/request: 8388608 bytes read in 9 jiffies --> ~ 88 MB/second 64##END DEVICE-SPECIFIC TESTS[0:0]## 65