Attachment 159843 Details for Bug 249158 – Details of test results

Details of test results

test-aes.txt (text/plain), 2.27 KB, created by Krzysio (Chris) Leszczynski on 2007-07-24 09:08:52 UTC

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Creator: Krzysio (Chris) Leszczynski

Created: 2007-07-24 09:08:52 UTC

Size: 2.27 KB

patch

obsolete

>The kernel is kernel-2.6.20-1.2962.fc6. 
>The disk is 400GB Seagate, ST3400620NS
>Trying to read 10GB, results:
>
>    /dev/zero->/dev/null:       47.9GB/s (0.2s)
>    unencrypted device:         72.2MB/s (148.7s)
>    encrypted with 'C' AES:     38.3MB/s (280.1s)
>    encrypted with i586 AES:    60.4MB/s (177.9s)
>
>
>Here is how I made the tests.
>
>$ cat /proc/cpuinfo
>processor       : 0
>vendor_id       : GenuineIntel
>cpu family      : 15
>model           : 4
>model name      : Intel(R) Celeron(R) CPU 2.53GHz
>stepping        : 9
>cpu MHz         : 2545.796
>cache size      : 256 KB
>fdiv_bug        : no
>hlt_bug         : no
>f00f_bug        : no
>coma_bug        : no
>fpu             : yes
>fpu_exception   : yes
>cpuid level     : 5
>wp              : yes
>flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc up pni monitor ds_cpl tm2 cid cx16 xtpr
>bogomips        : 5094.18
>clflush size    : 64
>
>My machine has 512MB of RAM, copying 10GB to reduce caching effect
>
>The kernel# Timing 10GB of /dev/null (just to test the procedure)
>
>$ dd if=/dev/zero bs=1024k count=10k of=/dev/null
>10240+0 records in
>10240+0 records out
>10737418240 bytes (11 GB) copied, 0.224041 seconds, 47.9 GB/s
>
>
># Timing 10GB of unecrypted device read
>$ dd if=/dev/sda4 bs=1024k count=10k of=/dev/null
>10240+0 records in
>10240+0 records out
>10737418240 bytes (11 GB) copied, 148.652 seconds, 72.2 MB/s
>
># Timing 10GB of C-version AES device read
>$ modprobe aes
>$ lsmod |grep aes
>aes                    31617  0 
>$ echo 0 `blockdev --getsz /dev/sda4` crypt aes-cbc-essiv:sha256 01234567890123456789012345678901 0 /dev/sda4 0 | dmsetup create sda4crypt
>$ dd if=/dev/mapper/sda4crypt bs=1024k count=10k of=/dev/null
>10240+0 records in
>10240+0 records out
>10737418240 bytes (11 GB) copied, 280.07 seconds, 38.3 MB/s
>
>
># Timing 10GB of i586-optimized AES
>$ dmsetup remove sda4crypt
>$ modprobe -r aes
>$ modprobe  aes-i586
>$ lsmod |grep aes
>aes_i586               37057  0 
>$ echo 0 `blockdev --getsz /dev/sda4` crypt aes-cbc-essiv:sha256 01234567890123456789012345678901 0 /dev/sda4 0 | dmsetup create sda4crypt
>$ dd if=/dev/mapper/sda4crypt bs=1024k count=10k of=/dev/null
>10240+0 records in
>10240+0 records out
>10737418240 bytes (11 GB) copied, 177.877 seconds, 60.4 MB/s

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Attachments on bug 249158: 159843