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jobi
n00b
Joined: 02 Jan 2004
Posts: 38
Location: Oslo,Norway
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 Posted: Fri Jan 02, 2004 7:10 pm Post subject: SiI3112 & 2.6.0-mm2 & no raid ROCKS! |
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Finally I'm getting some decent speeds from my WD Raptor (with 2.6-mm2). Only the one drive on SiI3112 - no raid.
| Code: |
hdparm -Tt /dev/hde:
Timing buffer-cache reads: 996 MB in 2.01 seconds = 496.34 MB/sec
Timing buffered disk reads: 178 MB in 3.02 seconds = 58.97 MB/sec
hdparm /dev/hde:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 70312500, start = 0
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compared to (running on 2.4.22-ac4):
| Code: |
hdparm -tT /dev/hde:
Timing buffer-cache reads: 1032 MB in 2.00 seconds = 516.00 MB/sec
Timing buffered disk reads: 122 MB in 3.04 seconds = 40.13 MB/sec
hdparm /dev/hde:
multcount = 16 (on)
IO_support = 0 (default 16-bit)
unmaskirq = 0 (off)
using_dma = 1 (on)
keepsettings = 0 (off)
readonly = 0 (off)
readahead = 8 (on)
geometry = 4376/255/63, sectors = 70312500, start = 0
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This is "out of the box" with no hdparm tweaking. Messing around a bit with hdparm solved my buffer-cache reads:
| Code: |
hdparm -d1c1m16X69 /dev/hde <- please use with caution.
hdparm -tT /dev/hde
/dev/hde:
Timing buffer-cache reads: 1016 MB in 2.01 seconds = 506.05 MB/sec
Timing buffered disk reads: 178 MB in 3.03 seconds = 58.70 MB/sec
hdparm /dev/hde
/dev/hde:
multcount = 16 (on)
IO_support = 1 (32-bit)
unmaskirq = 1 (on)
using_dma = 1 (on)
keepsettings = 1 (on)
readonly = 0 (off)
readahead = 256 (on)
geometry = 16383/255/63, sectors = 70312500, start = 0
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Has anyone managed better speeds with the SiI3112? Please post your comments and tweaks here.
Thanks!
--jobi |
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Crg
Guru
Joined: 29 May 2002
Posts: 345
Location: London
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| Posted: Fri Jan 02, 2004 7:23 pm Post subject: Re: SiI3112 & 2.6.0-mm2 & no raid ROCKS! |
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| jobi wrote: |
Finally I'm getting some decent speeds from my WD Raptor (with 2.6-mm2). Only the one drive on SiI3112 - no raid.
Has anyone managed better speeds with the SiI3112? Please post your comments and tweaks here.
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If you're running 2.6 - does "hdparm -a 8196" get you better "hdparm -t " results? |
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jobi
n00b
Joined: 02 Jan 2004
Posts: 38
Location: Oslo,Norway
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| Posted: Fri Jan 02, 2004 7:32 pm Post subject: Re: SiI3112 & 2.6.0-mm2 & no raid ROCKS! |
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| Crg wrote: |
If you're running 2.6 - does "hdparm -a 8196" get you better "hdparm -t " results?
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Sure does:
| Code: |
# hdparm -a 8196 /dev/hde
# hdparm -t /dev/hde
/dev/hde:
Timing buffered disk reads: 178 MB in 3.00 seconds = 59.32 MB/sec
# hdparm -Tt /dev/hde
/dev/hde:
Timing buffer-cache reads: 1116 MB in 2.00 seconds = 557.81 MB/sec
Timing buffered disk reads: 172 MB in 3.01 seconds = 59.19 MB/sec
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Thanks! |
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