Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt

[Zwane Mwaikambo]

On Mon, 10 Nov 2003, bill davidsen wrote:

> Looking at the system time being used I would say that this is doing
> something odd. If that's using DMA then for some reason is it doing a
> shitload of system calls at those times? I bet you're losing interrupts,
> getting nasty mousing, and I would wonder about dropping incoming
> network packets as well.
> 
> | deadline:
> | procs -----------memory---------- ---swap-- -----io---- --system-- 
> | ----cpu----
> |   r  b   swpd   free   buff  cache   si   so    bi    bo   in    cs us 
> | sy id wa
> |   0  0      0 455400  52760 309808    0    0   464   430 1824  1107 13 
> | 6 72  8
> |   0  0      0 455400  52760 309808    0    0     0    31 1264   617  2 
> | 0 98  0
> |   1  0      0 455384  52760 309808    0    0     0     0 1441  1267  4 
> | 2 94  0
> |   0  0      0 455376  52760 309808    0    0     0     0 1489  1957  4 
> | 3 93  0
> |   0  0      0 455616  52800 309912    0    0   144     0 1390  1519 13 
> | 5 69 13
> |   1  0      0 447016  52800 312712    0    0  2800     0 2040  1476 34 
> | 7 35 24

procs -----------memory---------- ---swap-- -----io---- --system------cpu----
r  b   swpd   free   buff  cache   si   so    bi    bo   in     cs us sy id wa
0  0      0 455400  52760 309808    0    0   464   430 1824   1107 13  6 72  8
0  0      0 455400  52760 309808    0    0     0    31 1264   617  2   0 98  0
1  0      0 455384  52760 309808    0    0     0     0 1441  1267  4   2 94  0

That looks like fairly low system time and generally idle system to me, 
and the interrupt rate isn't high at all.
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