BOUNCE linux-mm: Filtered: kvack.org not in to/cc. (fwd)

["Benjamin C.R. LaHaise" <bcrl@kvack.org>]

From pochini@denise.shiny.it Sat Oct 27 09:26:34 2001
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From:	Giuliano Pochini <pochini@denise.shiny.it>
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> block: 1024 slots per queue, batch=341
> 
> Wrote 600.00 MB in 71 seconds -> 8.39 MB/s (7.5 %CPU)
> 
> Still very spiky, and during the write disk is uncapable of doing any
> reads. IOW, no serious application can be started before writing has
> finished. Shouldn't we favour reads over writes? Or is it just that
> the elevator is not doing its job right, so reads suffer?
>
>    procs                      memory    swap          io     system         cpu
>  r  b  w   swpd   free   buff  cache  si  so    bi    bo   in    cs  us  sy  id
>  0  1  1      0   3596    424 453416   0   0     0 40468  189   508   2   2  96

341*127K = ~40M.

Batch is too high. It doesn't explain why reads get delayed so much, anyway.

Bye.

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