[Bug 131094] Re: Heavy Disk I/O harms desktop responsiveness

[Johannes H. Jensen]

I experience the same issue on my ThinkPad X61 running Lucid 64-bit on
both 2.6.32-23 and 2.6.34 mainline from http://kernel.ubuntu.com
/~kernel-ppa/mainline/.

A simple `dd if=/dev/zero of=big.file bs=1M count=1500' reproduces the
problem.

What's interesting is that applications are responsive up until the
point where the memory is filled up with cache, after which applications
becomes unresponsive and the system extremely slow. I've tried to reduce
the swappiness to 20 without any noticeable results.

I'm going to give 2.6.35-rc1 a try now, to see if there are any
improvements.

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Heavy Disk I/O harms desktop responsiveness
https://bugs.launchpad.net/bugs/131094
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