Large file copies using too much CPU time

[Shane Wright]

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On Sunday 23 June 2002 10:31 pm, Dan Stone wrote:
> Arts isn't logging anything strange, from what I can see...actually, I
> can't find a log of any sort from arts, tbh =\  Where does it log to by
> default?

Hmm, good question I have no idea.  I'd assumed it would dump stuff to stdout 
but after some experimentation it seems not.  What happens with big copies 
when arts isn't running?

> As for the drive settings, is there anything from within the OS itself that
> I'd have to set?  The drives are set up correctly from within the BIOS...
> (sorry, I'm a bit of a newb when it comes to dealing with hardware settings
> in Linux =P)

Ah, hdparm is your friend :)  'hdparm /dev/hda' will show the status and 
'hdparm -c1 -d1 /dev/hda' will set 32bit IO and DMA access to on (assuming 
you have relatively recent motherboard and drives, substitute /dev/hda for 
whichever drives you use).  Some distros do this automatically these days so 
it may not need to be done.  You may need to stick the hdparm commands in a 
startup script to run them on bootup.

Cheers

Shane

> On Sunday 23 June 2002 02:08 pm, Shane Wright wrote:
> > Hi
> >
> > Hmm, is arts giving any log info about what it's doing?
> >
> > (as a side note just in case, DMA and 32bit I/O is enable for the drives
> > I assume?)
> >
> > Cheers
> >
> > Shane
> >
> > On Sunday 23 June 2002 10:06 pm, Dan Stone wrote:
> > > Not always -- the problem manifests itself whether I'm just in a
> > > Konsole window unpacking a sizeable archive, or just copying files back
> > > and forth in Konqueror windows (or even just copying large files across
> > > partitions in Konsole...)
> > >
> > > Maybe I screwed up compiling arts somehow? *shrug* =P
> > >
> > > ~D. A. Stone
> > >
> > > > Hi
> > > >
> > > > Do you have a Konqueror window open browsing the destination
> > > > directory?
> > > >
> > > > If so that could be the problem - I think what happens is that there
> > > > are ways too many 'file has been updated' messages causing Konq to
> > > > update itself lots and munch CPU.  Closing that Konq (or going to a
> > > > different directory) should cause it to calm down a bit.
> > > >
> > > > Of course it arts is the guilty thing then it couldbe summat
> > > > completely different.
> > > >
> > > > Cheers
> > > >
> > > > Shane
> > > >
> > > > On Sunday 23 June 2002 9:03 pm, Dan Stone wrote:
> > > > > This is something I've been having problems with for a while, but
> > > > > after moving a large section of video files from one drive to
> > > > > another, it finally got to me to the point that I figured I'd ask
> > > > > to see if anyone knew a solution:
> > > > >
> > > > >  I'm running kinda a built-from-scratch linux system, using kernel
> > > > > 2.4.18, and using KDE 3.0.1 as my windowmanager...whenever large
> > > > > files are copied from one partition to another, there's a bit of a
> > > > > delay, then CPU usage spikes to 100%, and the entire system
> > > > > basically locks up until the hard disk write is done.  (The file
> > > > > systems are all EXT2) The guilty process, of all things, is artsd! 
> > > > > Are there any known bugs about artsd doing this, or did I just flub
> > > > > something up along the way? Any ideas on what could be done to fix
> > > > > this? Thanks!
> > > > >
> > > > > ~D. A. Stone
> > > > >
> > > > > ___________________________________________________
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- -- 
Shane
http://www.shanewright.co.uk/
Public key: http://www.shanewright.co.uk/files/public_key.asc
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