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lug-bg: losh SATA performance


  • Subject: lug-bg: losh SATA performance
  • From: Andrey Andreev <andreev@xxxxxxxxxxxxxx>
  • Date: Thu, 26 Feb 2004 13:52:09 +0200

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Zdrawejte,

Na mashinata si imam 2 diska:
/dev/hda -> 80 GB Maxtor DiamondMax 9+ (Parallel ATA) 6Y080L0
i
/dev/hde -> 160 GB Seagate Barracuda (Serial ATA) ST3160023AS

hda e zakachen na NForce2 ide controller (paralelen interface) wgraden w
chipseta
hde e zakachen na Silicon Image SiI3112 Serial ATA controller, zalepen
na dynoto

Linuxyt e Fedora Core 1, s Fedora stock kernel 2.4.22-1.2174.nptl

hdparm-s sa slednite

[root@brie home]# hdparm  /dev/hda

/dev/hda:
~ multcount    = 16 (on)
~ IO_support   =  3 (32-bit w/sync)
~ unmaskirq    =  1 (on)
~ using_dma    =  1 (on)
~ keepsettings =  0 (off)
~ readonly     =  0 (off)
~ readahead    =  8 (on)
~ geometry     = 9964/255/63, sectors = 160086528, start = 0
[root@brie home]# hdparm  /dev/hde

/dev/hde:
~ multcount    = 16 (on)
~ IO_support   =  3 (32-bit w/sync)
~ unmaskirq    =  1 (on)
~ using_dma    =  1 (on)
~ keepsettings =  0 (off)
~ readonly     =  0 (off)
~ readahead    =  8 (on)
~ geometry     = 19457/255/63, sectors = 312581808, start = 0


problemyt e sledniq:

[root@brie home]# hdparm -T -t /dev/hda

/dev/hda:
~ Timing buffer-cache reads:   1688 MB in  2.00 seconds = 844.00 MB/sec
~ Timing buffered disk reads:  160 MB in  3.09 seconds =  51.78 MB/sec
[root@brie home]# hdparm -T -t /dev/hde

/dev/hde:
~ Timing buffer-cache reads:   1688 MB in  2.00 seconds = 844.00 MB/sec
~ Timing buffered disk reads:   78 MB in  3.07 seconds =  25.41 MB/sec


T.e. SATA diskyt e znachitelno po bawen ot drugiq. Towa e osezaemo i pri
rabota. Wyprosyt e che ne bi trqbwalo da e taka...

Imate li nqkakwi idei kak da oprawq performance-a na wyprosniq disk.

Mersi predwaritelno.

Andrey Andreev
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