On Tue, 6 Jan 2009, Jacob Ritorto wrote:
> I have that iozone program loaded, but its results were rather cryptic
> for me. Is it adequate if I learn how to decipher the results? Can
> it thread out and use all of my CPUs?
Yes, iozone does support threading. Here is a test with a record size
of 8KB, eight threads, synchronous writes, and a 2GB test file:
Multi_buffer. Work area 16777216 bytes
OPS Mode. Output is in operations per second.
Record Size 8 KB
SYNC Mode.
File size set to 2097152 KB
Command line used: iozone -m -t 8 -T -O -r 8k -o -s 2G
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
Throughput test with 8 threads
Each thread writes a 2097152 Kbyte file in 8 Kbyte records
When testing with iozone, you will want to make sure that the test
file is larger than available RAM, such as 2X the size.
Bob
======================================
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
