Daniel L. Miller wrote:
Howdy all.
I've converted a Pentium II-350mhz w/ 128M RAM workstation from Windoze to Debian. Unfortunately, it seems that many operations are far slower - especially disk access. I've pasted the output of <dmesg> below. I do see some error messages regarding VFS mounts. I also see errors regarding <devfs> mounts during bootup that are not shown in the <dmesg> output - I'd also appreciate knowing what these bootup messages are indicating and how to fix 'em.
This is using the latest unstable kernel-image-2.4-686 package, as well as the lowlatency and preempt patches.
Have you enabled DMA on your disk?
Use hdparm (install via apt-get if you don't have it) and try something like:
hdparm -c1 -m16 -d1 -u1 /dev/hda
However, carefully read the documentation. I believe that in most cases DMA is disabled by default becuase some drive/chipset combos are buggy, which can cause severe corruption of data if DMA is enabled.
-Roberto
Using hdparm in "get" mode, I found my settings were: c0 m32 d1 u0
I set c1 and u1 - and I have done this step before. I've tried the -k flag - but it doesn't remember these settings between reboots. Or am I using this wrong, and I need to execute hdparm at each boot?
I don't really see a difference after these settings - is there something else I need to do? And should drop from m32 to m16?
Daniel
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