Benjamin Redelings I wrote:
>
> Hello,
>
> I've just tested out pre7-5, and it has MAJOR VM performance
> degradations that were NOT in pre7-4.
> In pre7-4, the kernel swapped out mainly pages from non-running tasks.
> I am running several daemons in the background which are NOT used, there
> are a lot of pages in this category. I could run netscape for quite a
> while w/o have ANY swapout!
> However, in pre7-5, very few pages from long-sleeping/unused daemons
> are swapped out. Instead, almost all the swapped pages are from
> netscape, which is the main running task! This slows down netscape
> NOTICEABLY! In pre7-4, much swapping occurred which I did 'tar -xf
> linux-2.3.99-pre5.tar', but in pre7-5, the system is almost completely
> unresponsive, besides swapping a lot.
> I then tried to run quake. Quake took MANY seconds to load, maybe even
> 30 seconds! This is highly unusual, and sure enough, many pages from
> QUAKE were swapped out. Still almost no swapout from unused damons.
> You can see that the swap-in numbers below are rather bad.
There are some serious issues with memory balancing in pre7-3, pre7-4 & pre7-5.
I think we may have a handle on one of those. Have a look in linux-mm
for a discussion. Likely pre7-6 will be better; if that doesn't release by tomorrow,
I'll put out patches against 7-5.
--
--------------------------------------------------------------------------
Rajagopal Ananthanarayanan ("ananth")
Member Technical Staff, SGI.
--------------------------------------------------------------------------
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sun May 07 2000 - 21:00:17 EST