Re: TCP Stall, also Opti Viper (82C557/558) support

Christof Petig (ea0141@uni-wuppertal.de)
Fri, 20 Feb 1998 18:38:28 +0100

Alan Cox wrote:
>> The TCP Stall is back in version 2.1.87. I don't know in which
version
>> it actually came back, but I just downloaded the kernel so I could
>> upgrade one of my machines at home.
>
>We know. I dont expect it to vanish too near in the future either.
>

And you are absolutely sure, that this stall is not caused by loosing
serial interrupts?

I have to enable IDE irq unmasking (hdparm -u1 /dev/hda) to get a
reasonable throughput
while downloading files.
Otherwise the symptom is:
no data arriving, ping works (of course)

Regards
Christof

PS: I have an Opti Viper chipset (OPTi 82C558 Viper-M ISA+IDE), which
does not
enable unmasking at bootup.
PPS: I have modified the opti621 driver to support native PIO modes for
this chipset (11% faster).
Mailing me your interest will speed up the process of putting it
together and sending it to the corresponding maintainer.

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