Re: IDE Performance lack !

Chris Wedgwood (cw@f00f.org)
Mon, 28 May 2001 11:31:16 +1200


On Sun, May 27, 2001 at 11:09:25AM -0700, Jaswinder Singh wrote:

But my problem is why linux boxes do not response for few seconds
(sometimes) and especially during telnet/ssh it looks more worst
and looks similar to Microsoft Windows :(

there is problem in scheduling or what ?

Sounds like IO starvation, if your reading from one partition to the
other, it's going to suck for IO --- the head will be going nuts.
Also, 2.2.x has a single IO queue for writes (doesn't it?), so that won't
help.

What if you dd a file from one partition to another, is the problem
lesser with larger buffers, say 64M or so?

What about dd from /dev/zero to a partition, so you get heavy writes,
does this also suck?

--cw

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