[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Performance comparison between Promise's FastTrak driver and the atarad/pdcraid drivers



The ataraid-list members might be interested in some basic performance testing I did
between the Promise's FastTrak driver and the atarad/pdcraid drivers that are
suppose to replace the FastTrak.o driver.

Hardware:
	Intel SCB2 motherboard
	Promise 20267 onboard chip
	Dual PIII 1.13 Gig Hz CPUs
	1 Gig RAM
	Dual Seagate 80 Gig drives (RAID 1 Mirror)

A disk Stress/Performance Test was executed with two versions of the
Linux kernel (2.4.18-3smp and 2.4.20-0smp) and the Promise FastTrak vs.
ataraid/pdcraid drivers.  The test script created three 2 gigabyte disk files in
parallel.

=================== TEST script ===============================
date
echo this will create about 2gb file in ~myhome  named largefile1
`dd if=/dev/zero of=largefile1 bs=16384 count=131072   &`
echo this will create about 2gb file in ~myhome  named largefile2
`dd if=/dev/zero of=largefile2 bs=16384 count=131072   &`
echo this will create about 2gb file in ~myhome  named largefile3
`dd if=/dev/zero of=largefile3 bs=16384 count=131072   `
date

============= RESULTS ====================================
Linux 2.4.18-3smp (Red Hat 7.3)
FastTrack.o (v1.02.0.22)         5-6 minutes
	(Promise's Pre-Compiled module)

Linux 2.4.20-0smp (Custom Kernel)
FastTrack.o  (v1.02.0.21)          5-6 minutes
	(Promise's Partial Open Source Code.  Compiled with custom kernel)

ataraid/pdcraid				30 minutes
		(Test stopped half way done. Only created three 1 gig files)

The Promise FastTrak driver was at least 10 times faster then the GPL
ataraid/pdcraid driver.  The above testes were execute three times each.
Each test result was the same.

...... Note .....
I could not get the Promise's Partial Open Source Code V 1.0.2.0.25 to boot.  It
compiled
OK, but during boot up it always dumped the Stack/Registers in their bInitRaid routine.

The Promise's Partial Open Source Code V 1.0.2.0.21 compiled and booted with no
problems.



Dennis
Chief Tech Guy
Alden Hosting LLC
http://www.AldenHosting.com





[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]