Re: preformance problem

Istvan Soos <[email protected]>
Newsgroups gmane.linux.gentoo.performance
Message-ID <[email protected]>
> Stage 3, so your system is not fully compiled and thus not fully
> optimised, however it should not impact your disk I/O ;p

sorry, I've emerge -pv system (recompile gcc and others...)

>
> > Any suggestion?
>
> *IF* you're sure this is a disk problem, the first thing you should check
> is an hdparm -tT /dev/yourdisk, then check if DMA is enabled, and/or if
> hdparm is configured to start at bootup.

Not sure, kernel (2.6.8.1) & disk & wait problem.

hdparm -vid /dev/hda:

/dev/hda:
 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     = 65535/16/63, sectors = 80026361856, start = 0

 Model=TOSHIBA MK8025GAS, FwRev=KA023A, SerialNo=83T42170S
 Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=48
 BuffType=unknown, BuffSize=0kB, MaxMultSect=16, MultSect=16
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4
 DMA modes:  sdma0 sdma1 sdma2 mdma0 mdma1 mdma2
 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
 AdvancedPM=yes: unknown setting WriteCache=enabled
 Drive conforms to: device does not report version:

 * signifies the current active mode

And it's on after boot.

Istvan

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