1 1.1 agc 2 1.1 agc ---------------------- 3 1.1 agc USER LEVEL PERFORMANCE 4 1.1 agc ---------------------- 5 1.1 agc 6 1.1 agc If your system is correctly configured with GbE and a GHz processor, 7 1.1 agc you should expect user level iSCSI performance similar to the following. 8 1.1 agc This output was generated by running utest against a target running uramdisk. 9 1.1 agc 10 1.1 agc ##BEGIN DEVICE-SPECIFIC TESTS[0:0]## 11 1.1 agc read_capacity PASSED 12 1.1 agc write_read_test PASSED 13 1.1 agc integrity_test PASSED 14 1.1 agc SCSI op 0x28: 1000 iters in 0.24 sec --> 244.38 usec 15 1.1 agc SCSI op 0x2a: 1000 iters in 0.25 sec --> 249.78 usec 16 1.1 agc SCSI op 0x25: 1000 iters in 0.25 sec --> 250.12 usec 17 1.1 agc 8192 bytes/request: 8 MB written in 0.33 seconds --> 24.35 MB/sec 18 1.1 agc 16384 bytes/request: 8 MB written in 0.30 seconds --> 26.74 MB/sec 19 1.1 agc 32768 bytes/request: 8 MB written in 0.20 seconds --> 39.06 MB/sec 20 1.1 agc 65536 bytes/request: 8 MB written in 0.15 seconds --> 52.95 MB/sec 21 1.1 agc 131072 bytes/request: 8 MB written in 0.12 seconds --> 66.74 MB/sec 22 1.1 agc 262144 bytes/request: 8 MB written in 0.10 seconds --> 77.76 MB/sec 23 1.1 agc 8192 bytes/request: 8 MB read in 0.37 seconds --> 21.34 MB/sec 24 1.1 agc 16384 bytes/request: 8 MB read in 0.19 seconds --> 41.47 MB/sec 25 1.1 agc 32768 bytes/request: 8 MB read in 0.13 seconds --> 62.04 MB/sec 26 1.1 agc 65536 bytes/request: 8 MB read in 0.11 seconds --> 70.99 MB/sec 27 1.1 agc 131072 bytes/request: 8 MB read in 0.10 seconds --> 83.62 MB/sec 28 1.1 agc 262144 bytes/request: 8 MB read in 0.09 seconds --> 92.38 MB/sec 29 1.1 agc ##END DEVICE-SPECIFIC TESTS[0:0]## 30 1.1 agc 31 1.1 agc ------------------------ 32 1.1 agc KERNEL LEVEL PERFORMANCE 33 1.1 agc ------------------------ 34 1.1 agc 35 1.1 agc Kernel level performance (ktest to kramdisk.o) should be similar to the output 36 1.1 agc shown below. Note that this test does not go through the linux storage stack, 37 1.1 agc but is rather a kernel level iSCSI test with no attached filesystem or SCSI 38 1.1 agc midlayer. 39 1.1 agc 40 1.1 agc This output was generated by installing the module intel_iscsi.o and then 41 1.1 agc running "ktest <device>" where <device> is one of your iscsi devices (e.g, 42 1.1 agc /dev/sdb). Although you specify a single device on the command line, all 43 1.1 agc target devices are tested. 44 1.1 agc 45 1.1 agc ##BEGIN DEVICE-SPECIFIC TESTS[0:0]## 46 1.1 agc read_capacity PASSED 47 1.1 agc write_read_test PASSED 48 1.1 agc integrity_test PASSED 49 1.1 agc SCSI op 0x28: 1000 iters in 25 jiffies --> 250 usec 50 1.1 agc SCSI op 0x2a: 1000 iters in 25 jiffies --> 250 usec 51 1.1 agc SCSI op 0x25: 1000 iters in 25 jiffies --> 250 usec 52 1.1 agc 8192 bytes/request: 8388608 bytes written in 38 jiffies --> ~ 21 MB/second 53 1.1 agc 16384 bytes/request: 8388608 bytes written in 38 jiffies --> ~ 21 MB/second 54 1.1 agc 32768 bytes/request: 8388608 bytes written in 23 jiffies --> ~ 34 MB/second 55 1.1 agc 65536 bytes/request: 8388608 bytes written in 16 jiffies --> ~ 50 MB/second 56 1.1 agc 131072 bytes/request: 8388608 bytes written in 12 jiffies --> ~ 66 MB/second 57 1.1 agc 262144 bytes/request: 8388608 bytes written in 10 jiffies --> ~ 79 MB/second 58 1.1 agc 8192 bytes/request: 8388608 bytes read in 26 jiffies --> ~ 30 MB/second 59 1.1 agc 16384 bytes/request: 8388608 bytes read in 20 jiffies --> ~ 39 MB/second 60 1.1 agc 32768 bytes/request: 8388608 bytes read in 12 jiffies --> ~ 66 MB/second 61 1.1 agc 65536 bytes/request: 8388608 bytes read in 12 jiffies --> ~ 66 MB/second 62 1.1 agc 131072 bytes/request: 8388608 bytes read in 10 jiffies --> ~ 79 MB/second 63 1.1 agc 262144 bytes/request: 8388608 bytes read in 9 jiffies --> ~ 88 MB/second 64 1.1 agc ##END DEVICE-SPECIFIC TESTS[0:0]## 65
Indexes created Mon Apr 20 00:23:12 UTC 2026