Messages in this thread | | | Date | Sun, 6 Jun 1999 06:29:52 +0200 (CEST) | From | Mike Galbraith <> | Subject | Re: [patch] `cp /dev/zero /tmp' (patch against 2.2.9) |
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On Fri, 4 Jun 1999, Andrea Arcangeli wrote:
> I think the problem is the current flushing that is not able to share the > I/O bandwith with readers. > > Here it is my idea that I am testing since some day ago. It completly > avoid the DoS doing `cp /dev/zero /tmp'. Now a `find` go fast near as > there wouldn't be a `cp /dev/zero /tmp' in background. It improves (or > better it gives you :) the iteractive response while kflushd is doing its > work. It seems to have no impact on normal write performances. It seems to > only avoid the readers-starvation and I am quite happy with it.
This patch cured another DoS... Pine! If you have tired old disks (me), closing a large (lk) mail-box would freeze the machine for several very annoying seconds while it rewrote the file. --annoyance ;-)
-Mike
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