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SubjectRe: What version of the kernel fixes these VM issues?


On Sat, 25 Aug 2001, Daniel Phillips wrote:

> On August 25, 2001 05:00 am, Nicolas Pitre wrote:
> > This board has 32MB RAM, no swap. Root fs is NFS. On the serial console I
> > start a command line mp3 player. In a first telnet session I start a build
> > of gcc 3.0 (./configure; make). In a second telnet session I start 'top'.
> > Music plays while gcc builds and I can see the CPU usage within top.
> > Pretty real scenario, real life situation, expected system load, no trick.
>
> You're streaming the mp3 over nfs, right? From your setup I'd guess there's
> no local hard disk.

No there isn't.

> > - The same behavior occurs with 2.4.8-ac4.
>
> How far back do you have to go before you get one that works? I seem to
> recall the inactive_plenty changes came in at 2.4.8-pre1. Could you try it
> with 2.4.7, please.

2.4.7 does the same, spinning in kswapd while everything else is stalled,
except for kernel BHs.


SysRq: Show Memory
Mem-info:
Free pages: 1016kB ( 0kB HighMem)
( Active: 2554, inactive_dirty: 0, inactive_clean: 0, free: 254 (255 510 765) )
4*4kB 1*8kB 0*16kB 1*32kB 1*64kB 1*128kB 1*256kB 1*512kB 0*1024kB 0*2048kB = 1016kB)
= 0kB)
= 0kB)
Swap cache: add 0, delete 0, find 0/0
Free swap: 0kB
8192 pages of RAM
395 free pages
626 reserved pages
581 pages shared
0 pages swap cached
3 page tables cached
Buffer memory: 8000kB


So 2.4.7 was screwed the same way too.


Nicolas

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