Re: VM problems and pre2

From: Juan J. Quintela (
Date: Wed May 24 2000 - 08:44:22 EST

>>>>> "sheer" == Sheer El-Showk <> writes:

sheer> Does anyone know if the VM problems being discussed pertain to the pre2
sheer> kernel as well. I noticed my system started slowing down when I ran X
sheer> with a high-color backgrounds and hi-res (takes up a lot of memory and
sheer> constantly swapping), but I had no crashes. I upgraded to 256 megs of RAM
sheer> and all was good. Then I tried using matlab and running some
sheer> calculations with a lot of data (matlab has this cute _feature_ where it
sheer> never frees up used memory -- does anyone know if malloc is really that
sheer> slow or if swapping out causes worse overhead) and the whole machine froze
sheer> up on me. Also, before the crash performance was really bad -- I have an
sheer> SMP machine and kswapd took one entire processor. I am going to upgrade
sheer> to a newer kernel and get the classzone patch. Any idea whether this is
sheer> related to the current VM problems.

        It can be related, use the new 2.3.99-pre9 kernel, it has
        fixed all the known bugs (known by me at least) except the
        slowdowns from time to time when there is a lot of dirty
        buffers. I will like to hear your experiences with the new
        kernels. (Note that pre8 is quite bad, use pre9).

Later, Juan.

In theory, practice and theory are the same, but in practice they 
are different -- Larry McVoy

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