I/O Benchmarks

Beta release web page, not done yet

Various disk I/O subsystem benchmarks.  All benchmarks where created using iozone from http://www.iozone.org.

Please note:  The scales and colors in the graphs are NOT uniform.  Purple in one graph DOES NOT mean the same thing in another graph.  Check the data file for each test to see the actual results.

Command used to test: cd to disk, then run: iozone -RAb <name>.xls

Note: Some test were run with a small "a" (skip time consuming small block/large file test).  This is why some graphs drop to zero in the right front.



In the graphs, the X-axis is file size in kilobytes, the Y-axis is block size in kilobytes, and the Z-axis is kilobytes per second (higher is better).
 
Note: These graphs are of "first time read" (which is important for random read databases [Online Transaction Processing]). The "re-read" and "write" numbers favor the "Name Brand Storrage System" (I'm not sure if I can mention their name). However, I'm interested in "first response time" so these are the graphs that I have put up. You can download the data files and run your own analysis for other metrics.
 
Click on any graph to get a larger picture.
 
 
Name brand storrage system 3830
Fibre attached unit using 36G 10000 RPM disk
Cross mirrored with 24 disk stripe width, 32K stripe depth
Outer (fastest) disk
Sun E6500 28 x 400Mhz/8M cache US-II CPUs
Solaris 2.6 32 bit Veritas VxFS
10G RAM

Very strange.  The outer disk (stripe set) is supposed to be the fastest.

 Data file (excel) 
 Data file (text) 
Name brand storrage system
Fibre attached unit using 36G 10000 RPM disk
Cross mirrored with 48 disk stripe width, 32K stripe depth
Outer (fastest) disk
Sun E6500 28 x 400Mhz/8M cache US-II CPUs
Solaris 2.6 32 bit Veritas VxFS
10G RAM

Strange, same thing with a 48 wide stripe.

 Data file (excel) 
 Data file (text) 
Name brand storrage system
Fibre attached unit using 36G 10000 RPM disk
Cross mirrored with 48 disk stripe width, 32K stripe depth
Middle (2 nd fastest) disk
Sun E6500 28 x 400Mhz/8M cache US-II CPUs
Solaris 2.6 32 bit Veritas VxFS
10G RAM

Even stranger, the middle disk (medium speed) disk looks better than the outer disk.

 Data file (excel) 
 Data file (text)
Fujitsu Fast/Wide SCSI 7200 RPM 18G disk (MAH3182MC-0114)
Read test
Tested on:
Sun E3000  4 x 336Mhz/4M cache US-II CPUs
Solaris 8, 64 bit UFS
1G RAM

Orange region is 250,000 - 300,000 KB/s
 

Data file (excel)
Data file (text)
Seagate Cheetah Fast/Wide SCSI 10,000 RPM 18G disk (ST318203LC-HP00)
Read test
Tested on:
Sun E3000 4 x 336Mhz/4M cache US-II CPUs
Solaris 8, 64 bit UFS
1G RAM

No real difference between 7200 and 10K RPM disk.
 

Data file (excel)
Data file (text)
Seagate Cheetah Fast/Wide SCSI 10,000 RPM 18G disk (ST318203LC-HP00)
Read test
Tested on:
Sun Ultra-1 1 x 200Mhz cache US-I CPU
Solaris 8, 64 bit UFS
576M RAM

Blue region is 200,000 - 250,000 KB/s

Interesting, a 10K disk does suffer in a slower machine.

 

Data file (excel)
Data file (text)
Seagate Barracuda IDE ATA II 7200 RPM 15G disk (ST315320A)
Read Test
Tested on:
Sun Sunblade-100 500Mhz US-IIe CPU
Solaris 8, 64 bit UFS
256M RAM
Note: Appreviated test, used a small "a".  Large files using small blocks were not tested.

Pink region is 180,000 - 200,000 KB/s 

IDE does not perform as well as SCSI.

Data file (excel)
Data file (text)


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