[haiku-development] Re: Kernel panic while wget -ing large files - BFS bug?
- From: "Axel Dörfler" <axeld@xxxxxxxxxxxxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sun, 01 Jul 2007 12:37:04 +0200 CEST
Travis Geiselbrecht <geist@xxxxxxxxxx> wrote:
> Looks like it ran out of virtual memory while writing to the file. I
> think the file cache code right now will currently try to cache the
> entire file if it's active, so it'll eventually end up requiring
> 700MB of ram during the writing process. I think this is the source
> of most of the 'I just tried to do a bunch of stuff to a huge pile of
> files' bugs that people see.
Exactly.
> The back end of the VM is incomplete in that it doesn't properly
> reclaim pages when it runs out, so when you stress the system by
> doing stuff that hits a lot of memory it'll tend to get unhappy.
I had already started working on that, but I postponed it until we've
solved some other VM problems - because stealing pages will potentially
show lots of race conditions and other things again.
Bye,
Axel.
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