Re: 2.6.0-test9 /-mm3 SATA siimage - bad disk performance

[Marcus Hartig]

Prakash K. Cheemplavam wrote:

> I have a similar problem: With 2.4.22-ac3 I had 37mb/sec with my Samsung 
> HD and 49MB/sec with IBM/Hitachi, now with 2.6 (all I tried, including 
> test9-mm2) I had only 20mb/sec for Samsung and about 39mb/sec for the 
> IBM. Motherboard is Abit NF7-S Rev2.0, as well, so same situation with 
> the siimage 1.06 driver. I wanted to run some dd tests as well, but it 
> is a real performance hit. Playing with readahead or other hdparm 
> options didn't help either.

I get a tip from Mark Hahn to set the pci latency to 64. And wow, with 
fedora 2.4.22 kernel I get then 41MB/sec with max_k_p_r 128. But,... 
after copying big files I get ext3-fs erros, cannot read inode etc and a
bus error. Bumm!

Maybe it runs better with your harddrives.

Marcus

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/