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This page displays the results of a disk benchmark utility used to test disk I/O using a conventional disk drive and a RAM disk. The test was performed using an Itanium2 rx8620 configured with 64GB of memory, loaded with HP-UX 11.23 64bit and RamDisc Plus. |
Disk specifications : Ultra320 73GB 15,000 rpm
: 3.6ms average read/write
: 8mb cache
SCSI describe of /dev/rdsk/c8t6d0:
vendor: HP 73.4G
product id: ST373453LC
type: direct access
size: 71687369 Kbytes
bytes per sector: 512
DSK LVM device : /dev/vg01/rlvol1
RAM LVM device : /dev/vr09/rlram1
DEV non-LVM device : /dev/rdsk/crt0d0
#Benchmark version : 1.6.2
#Benchmark started : Sun Feb 22 12:40:48 2004
#Description : diskbench
#
#System : hp server rx8620 (ia64)
#OS version : HP-UX B.11.23 U
#
#Physical memory : 65536 MB (64GB)
#Page size : 4096 bytes
#Device : rlvol1 (DSK)
#Interface : Hard disk LVM logical volume
#Section capacity : 2000 MB
#Disk capacity : 2000 MB
#Sector size : 1024 bytes
#Device : rlram1 (RAM)
#Interface : RamDisc LVM logical volume
#Section capacity : 2000 MB
#Disk capacity : 2000 MB
#Sector size : 1024 bytes
#Device : crt0d0 (DEV)
#Interface : RamDisc non-LVM device file
#Section capacity : 2000 MB
#Disk capacity : 2000 MB
#Sector size : 1024 bytes
#Number of devices : 1
#Files per device : 1
#Load per file : 1 processes
#Percentage : 100% of the stated Rd/Wr
#File size : 2048000 KB
#Start position : 0 KB
#End position : 2048000 KB
#
#Number of samples : 10
#Sample period : 30 seconds
#
Rd/Wr Xfer Rate +/- Min Max CPU +/- RespT +/-
100% KB IO/s IO/s IO/s IO/s util% % msec msec
---------------------------------------------------------------------------------
read DSK 2 285.633 1.002 282.701 287.571 1.994 1.236 3.501 0.012
read RAM 2 107636.022 557.956 106244.581 108679.679 4.934 3.063 0.009 0.000
read DEV 2 137728.367 932.168 135076.632 139450.242 6.570 3.290 0.007 0.000
---------------------------------------------------------------------------------
#Percentage : 100% of the stated Rd/Wr
#File size : 2048000 KB
#Start position : 0 KB
#End position : 2048000 KB
#
#Number of samples : 15
#Sample period : 30 seconds
Rd/Wr Xfer Rate +/- Min Max CPU +/- RespT +/-
100% KB IO/s IO/s IO/s IO/s util% % msec msec
---------------------------------------------------------------------------------
write DSK 2 263.647 0.642 261.968 266.391 10.517 2.875 3.793 0.009
write RAM 2 76266.471 896.305 69799.288 77503.065 4.262 2.021 0.013 0.000
write DEV 2 91596.863 1081.682 84454.358 93819.555 16.561 2.531 0.011 0.000
---------------------------------------------------------------------------------
#Percentage : 60% of the stated Rd/Wr
#File size : 2048000 KB
#Start position : 0 KB
#End position : 2048000 KB
#
#Number of samples : 10
#Sample period : 30 seconds
Rd/Wr Xfer Rate +/- Min Max CPU +/- RespT +/-
100% KB IO/s IO/s IO/s IO/s util% % msec msec
---------------------------------------------------------------------------------
read DSK 2 275.315 0.824 273.261 277.153 10.355 3.497 3.632 0.011
read RAM 2 87716.929 592.135 86925.527 90357.538 15.534 3.058 0.011 0.000
read DEV 2 106253.604 752.628 104730.823 108410.881 4.840 3.000 0.009 0.000
---------------------------------------------------------------------------------
#File size : 140960 KB
#Load per file : 1 processes
#Number of samples : 20
#Start location : 0 KB
#Interleave amount : 0 KB
Rd/Wr Xfer Rate +/- Min Max CPU +/- RespT +/-
KB MB/s MB/s MB/s MB/s util% % msec msec
---------------------------------------------------------------------------------
read DSK 256 36.958 0.041 36.856 37.109 2.011 0.881 6.764 0.008
read RAM 256 225.099 0.265 223.086 225.982 1.633 0.877 1.111 0.001
read DEV 256 223.178 0.481 222.037 224.477 13.274 2.455 1.120 0.002
---------------------------------------------------------------------------------
#File size : 140960 KB
#Load per file : 1 processes
#Number of samples : 20
#Start location : 0 KB
#Interleave amount : 0 KB
Rd/Wr Xfer Rate +/- Min Max CPU +/- RespT +/-
KB MB/s MB/s MB/s MB/s util% % msec msec
---------------------------------------------------------------------------------
write DSK 256 30.932 0.763 28.342 32.797 11.414 2.443 8.108 0.201
write RAM 256 295.741 2.629 277.307 313.129 2.966 1.065 0.846 0.008
write DEV 256 297.550 1.998 279.132 300.181 12.419 2.388 0.840 0.006
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