On Wednesday 03 Sep 2003 12:32 pm, Shridhar Daithankar wrote:
> I have Athlon XP2000+ with Asus mobo(some number ending with 266) and I get
> 200MB+ps and 32 MBps respectively.
>
> If you have 7200RPM, then the results would be hell better. The maxtor one
> in my office gives me more than 50MBps in later case..
>
I have mandrake linux 9.1 and ASUS A7N8X deluxe MB with nforce chipset Athlon 
2400. The drive is reported as LBA 100 ATA by BIOS during POST. It is 7200 rpm 
drive.
Present info about my /dev/hdb is as follows.
[EMAIL PROTECTED] lvgandhi]# hdparm /dev/hdb

/dev/hdb:
 multcount    = 16 (on)
 IO_support   =  1 (32-bit)
 unmaskirq    =  1 (on)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 4870/255/63, sectors = 78242976, start = 0
[EMAIL PROTECTED] lvgandhi]# hdparm -i /dev/hdb

/dev/hdb:

 Model=SAMSUNG SP4002H, FwRev=QU100-60, SerialNo=0411J1FT811301
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=16383/16/63, TrkSize=34902, SectSize=554, ECCbytes=4
 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=78242976
 IORDY=yes, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4
 DMA modes:  mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5
 AdvancedPM=no WriteCache=enabled
 Drive conforms to: ATA/ATAPI-6 T13 1410D revision 1:  1 2 3 4 5 6

[EMAIL PROTECTED] lvgandhi]# hdparm -tT /dev/hdb

/dev/hdb:
 Timing buffer-cache reads:   128 MB in  0.38 seconds =336.84 MB/sec
 Timing buffered disk reads:  64 MB in  2.22 seconds = 28.83 MB/sec

Same hdd when it was fitted in old kobian intel 815 chiset mb with intel PIII 
866 used to give the above figs as 90 and 42. By the way any body can explain 
the real life significance of these two values.
In hdparm -i /dev/hdb, it was reported udma5.
I feel udma factor is reason for reduction in rate from 42 to 29. I tried 
hdparm -X 69 /dev/hdb. Though it says it sets to X69, still it remains udma2 
when I check with hdparm -i /dev/hdb.
I am at loss to understand what to do.
-- 
L.V.Gandhi
203, Soundaryalahari Apartments, Lawsons Bay colony, Visakhapatnam, 530017
MECON, 5th Floor, RTC Complex, Visakhapatnam AP 530020 INDIA



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