On 1/21/07, Tim Schmielau <[EMAIL PROTECTED]> wrote:
Yes. You have a faster Disk that writes about 45 MB/s. But I am not sure I understand what you want to know?
I got these results with a customized 2.6.20-rc5. [EMAIL PROTECTED] kernel]$ uname -a Linux Typhoon 2.6.20-rc5-Topol-M #1 SMP Sun Jan 21 04:35:28 IST 2007 i686 i686 i386 GNU/Linux
> [EMAIL PROTECTED] ~]$ time dd if=/dev/zero of=/tmp/1GB bs=1M count=1024; time > sync > 1024+0 records in > 1024+0 records out > 1073741824 bytes (1.1 GB) copied, 19.5007 seconds, 55.1 MB/s > > real 0m20.439s > user 0m0.004s > sys 0m4.535s > > real 0m4.625s > user 0m0.000s > sys 0m0.125s
[EMAIL PROTECTED] kernel]$ time dd if=/dev/zero of=/tmp/1GB bs=1M count=1024; time 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 22.7749 seconds, 47.1 MB/s real 0m24.541s user 0m0.005s sys 0m3.899s real 0m0.000s user 0m0.000s sys 0m0.000s
> > [EMAIL PROTECTED] ~]$ time dd if=/dev/zero of=/tmp/1GB bs=1M count=1024 | sync > 1024+0 records in > 1024+0 records out > 1073741824 bytes (1.1 GB) copied, 20.8707 seconds, 51.4 MB/s > > real 0m22.449s > user 0m0.002s > sys 0m4.922s
[EMAIL PROTECTED] kernel]$ time dd if=/dev/zero of=/tmp/1GB bs=1M count=1024 | sync 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 19.8685 seconds, 54.0 MB/s real 0m21.373s user 0m0.003s sys 0m3.859s
> Linux used here is not 2.6.20-rc5, but it's a FC6 2.6.19 binary. Shall > post the results with 2.6.20-rc5. > > BTW, does the results vary with a customized kernel (configured w.r.t > Processor & Hardware) than a generic kernel like FC6? I'd guess the kernel won't make much of a difference as the time is mostly determined by RAM and disk speeds.
There is some deviation in the results between these 2 kernels. Is this acceptable?
> Are there any other such test cases? Well, what do you want to find out? Anyways, I am in no way expert in the field of benchmarking.
I would be trying to benchmark the results on my machines in this fashion (overclocking experiment):- Disk Types Machine RAM SATA 1.5 GBPS - 160 GB P4-HT-3.0 GHz 2x1GB Corsair SATA 3.0 GBPS - 320 GB P4-HT-3.0 GHz 2x1GB Corsair SATA 1.5 GBPS - 160 GB P4-HT-3.0 GHz 2x1GB OCZ SATA 3.0 GBPS - 320 GB P4-HT-3.0 GHz 2x1GB OCZ SATA 1.5 GBPS - 160 GB P4-HT-3.0 GHz 2x1GB Supertalent SATA 3.0 GBPS - 320 GB P4-HT-3.0 GHz 2x1GB Supertalent SATA 1.5 GBPS - 160 GB P4-HT-3.0 GHz 2x1GB Hynix SATA 3.0 GBPS - 320 GB P4-HT-3.0 GHz 2x1GB Hynix Boards here would be used are Intel based 915, 965, and 975. Would be happy to know more test cases - for RAM/Disk/Processor Frequency And, I don't work for any magazine, writing a review ;-)
Tim
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