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SubjectRe: Linux-2.4.1-pre11 / ll_rw_b watermark metric?
On Mon, Jan 29 2001, Dieter Nützel wrote:
> I have pre11 running with Andrea's suggested fix.
>
> high_queued_sectors = total_ram / 3;
> low_queued_sectors = high_queued_sectors / 2;
> if (low_queued_sectors < 0)
> low_queued_sectors = total_ram / 2;
>
> /*
> * for big RAM machines (>= 384MB), use more for I/O
> */
> /*
> if (total_ram >= MB(384)) {
> high_queued_sectors = (total_ram * 4) / 5;
> low_queued_sectors = high_queued_sectors - MB(128);
> }
> */
>
> Shouldn't it be clean for a 2.4.1 release?

With enough swap the numbers I saw were not conclusive. I promised
to test which I haven't gotten done yet, I will do this tomorrow
and make sure we have the right ratios. However, I don't think
the pre11 numbers are much off - do you have any results?

--
Jens Axboe

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