Messages in this thread |  | | | Date | Sat, 7 Dec 2002 07:25:16 -0800 | | From | David Ashley <> | | Subject | RE: 2.4.18 beats 2.5.50 in hard drive access???? |
| |
Manish Lachwani (manish@Zambeel.com) wrote: >Can you also make sure that write cache is ON? hdparm -q -W 1 /dev/hdX. And >also the READ cache. hdparm -q -A 1 /dev/hdX. > >Also, from the IDENTIFY information below, it looks like no UDMA mode is set >for the device. It always is set to multiword dma 2.
I tried both hdparm commands on hdb/hdc/hdd and they didn't print out any errors, but the performance hasn't changed any. I'm only concerned with scattered read access performance, write performance is fairly irrelevant.
Is the lack of a UDMA mode related to the kernel message of "DMA disabled"?
Thanks-- Dave - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |