How I did what I did . hdparm - harddrive

[wesley_of_course]

8)

Not sure where to post this but here goes ;

Would this command , sudo hdparm -d1 -k1 /dev/hdb , work for the harddrive in question ? (hdb ) http://linuxdevcenter.com/pub/a/linux/2000/06/29/hdparm.html?page=1
https://help.ubuntu.com/community/DMA
Before ;
wesley@Ratdog:~$ sudo hdparm -tT /dev/hdb
/dev/hdb:
Timing cached reads: 880 MB in 2.00 seconds = 439.09 MB/sec
Timing buffered disk reads: 76 MB in 3.08 seconds = 24.67 MB/sec

wesley@Ratdog:~$ sudo hdparm /dev/hdb

/dev/hdb:
multcount = 0 (off)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 24792/255/63, sectors = 398297088, start = 0

wesley@Ratdog:~$ sudo hdparm -c3 -m16 /dev/hdb
/dev/hdb:
setting 32-bit IO_support flag to 3
setting multcount to 16
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)

wesley@Ratdog:~$ sudo hdparm -tT /dev/hdb

/dev/hdb:
Timing cached reads: 888 MB in 2.00 seconds = 443.97 MB/sec
Timing buffered disk reads: 76 MB in 3.07 seconds = 24.74 MB/sec

wesley@Ratdog:~$ sudo hdparm -X34 -d1 -u1 /dev/hdb

/dev/hdb:
setting unmaskirq to 1 (on)
setting using_dma to 1 (on)
setting xfermode to 34 (multiword DMA mode2)
unmaskirq = 1 (on)
using_dma = 1 (on)


wesley@Ratdog:~$ sudo hdparm -X34 -d1 -u1 -m16 -c3 /dev/hdb

/dev/hdb:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting unmaskirq to 1 (on)
setting using_dma to 1 (on)
setting xfermode to 34 (multiword DMA mode2)
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 1 (on)

And if so , what IF I was to put it all together like this ;
wesley@Ratdog:~$ sudo hdparm -X34 -d1 -u1 -m16 -c3 -d1 -k1 /dev/hdb

/dev/hdb:
setting 32-bit IO_support flag to 3
setting multcount to 16
setting unmaskirq to 1 (on)
setting using_dma to 1 (on)
setting keep_settings to 1 (on)
setting xfermode to 34 (multiword DMA mode2)
multcount = 16 (on)
IO_support = 3 (32-bit w/sync)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 1 (on)
Hope this helps and remember I'm a newbie at this .
I did a lot of surf'in .
Could someone check or reply thats in the know ? Thanks !

[esaym]

multicount is deprecated and IO_support is for pci cards only. Once dma is enabled it will use the fastest speed available so why are you forcing multiword mode2?

http://gentoo-wiki.com/HOWTO_Use_hdparm_to_improve_IDE_device_performance

You can get better write performance with write caching (-W1) but it comes at a cost some say. Do a google search for- hdparm write caching "-W1" corruption (http://www.google.com/search?hl=en&q=hdparm+write+caching+%22-W1%22+corruption&btnG=Google+Search) and validate for yourself whether or not you want to use it. I use it on my ext2 filesystem with no problems.

[wesley_of_course]

Esaym , first I apologize for taking so long to reply , installed Xfce and have since

re-did what I did ! Still a Newb and didn't research enough .

Read some and came up with the following ;

wesley@Ratdog:~$ sudo hdparm -qm8 -qu1 -qc1 -qd1 -d1 -k1 /dev/hdb

wesley@Ratdog:~$ sudo hdparm /dev/hdb

/dev/hdb:
multcount = 8 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 1 (on)
readonly = 0 (off)
readahead = 256 (on)
geometry = 24792/255/63, sectors = 398297088, start = 0

wesley@Ratdog:~$ sudo hdparm -tT /dev/hdb

/dev/hdb:
Timing cached reads: 940 MB in 2.01 seconds = 468.39 MB/sec
Timing buffered disk reads: 178 MB in 3.03 seconds = 58.84 MB/sec

wesley@Ratdog:~$ sudo hdparm -tT /dev/hdb

/dev/hdb:
Timing cached reads: 892 MB in 2.00 seconds = 445.32 MB/sec
Timing buffered disk reads: 178 MB in 3.03 seconds = 58.79 MB/sec
wesley@Ratdog:~$ sudo hdparm -tT /dev/hdb

/dev/hdb:
Timing cached reads: 896 MB in 2.00 seconds = 447.33 MB/sec
Timing buffered disk reads: 178 MB in 3.01 seconds = 59.22 MB/sec


Would this work better ? I sure can't afford to trash anything !Thrash ,maybe .

I do have a question tho. If I would of performed hdparm on /dev/hda from a Linux
would it / could it set parameters for /dev/hda ?

Thanks for the time and explanation , links , question. :oops: