Re: Linux-2.4.1-pre11 / ll_rw_b watermark metric?

[Petr Vandrovec]

On 29 Jan 01 at 4:43, 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;
>  

I have one question: How it can happen that low_queued_sectors
is less than zero with this changed logic? (And if it get triggered, 
low_queued_sectors will be greater than high_queued_sectors - which 
is not what we want...)

But it is certainly better than 2.4.0-pre8 approach, as
with 200MB of memory (exactly 192MB left unused) you can end up with 
low_queued_sectors == 0... And it does not give you optimal behavior.
                                        Best regards,
                                            Petr Vandrovec
                                            [e-mail]