I installed a few months ago a new hard drive (Maxtor 4 Megish) on
ide1 as /dev/hdc, and have noticed something queer which last nite i
took the trouble to characterize clearly:
lets say i go 'tar xvfz large-many-file-archive.tar.gz' onto
/dev/hdc. you see the files start to spin out fast, then stop, then go
a little bit, then stop and wait, then go again. And the stop and wait
are not on large files, could be any size even small.
when i go and tar xvfz the same archive on /dev/hda it speeds right
through all the files.
so i figure something is up with /dev/hdc trying to write lots of
different files.
originally i had MultiSect=0 and then set it to 8, but that didnt
help.
i am using irqtune to fix poor PPP download rates.
but i dont think explains anything, since ide0 is just one higher
priority than ide1 (and lower than the I03 serial, which carries PPP),
but ide0 has no problem with stall.
Any suggestions to fix this damn thing?
thanks much.
info follows
============
kernel = 2.0.35
(gustav)~/: hdparm -I /dev/hdc
/dev/hdc:
Model=aMtxro9 40233D , FwRev=AW8S7293, SerialNo=3K40K7AJ
Config={ Fixed }
RawCHS=8374/16/63, TrkSize=0, SectSize=0, ECCbytes=29
BuffType=3(DualPortCache), BuffSize=256kB, MaxMultSect=16, MultSect=8
DblWordIO=no, maxPIO=2(fast), DMA=yes, maxDMA=2(fast)
CurCHS=8374/16/63, CurSects=8440992, LBA=yes, LBAsects=8440992
tDMA={min:120,rec:120}, DMA modes: mword0 mword1 *mword2
IORDY=on/off, tPIO={min:120,w/IORDY:120}, PIO modes: mode3 mode4
[memo to Mark Lord: hdparm is swapping characters in the Model name,
that should be Maxtor 94......]
irqtune: trying command -- rmmod irqtune_mod
I00/P05: 377686 timer
I01/P06: 3596 keyboard
I02/P07: 0 cascade
I03/P00: 31164 + serial
I04/P01: 31127 + serial
I08/P09: 0 + rtc
I11/P12: 529 + aha152x
I13/P14: 1 math error
I14/P07: 42916 + ide0
I15/P08: 85861 + ide1
-- ____ Les Schaffer godzilla@netmeg.net ___| --->> Engineering R&D <<--- Theoretical & Applied Mechanics | Designspring, Inc. Center for Radiophysics & Space Research | Westport, CT USA Cornell Univ. schaffer@tam.cornell.edu | les@designspring.com .- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/