Subject: Re: Strange network performance problem with -current and 1.6_BETA1
To: Manuel Bouyer <email@example.com>
From: Markus W Kilbinger <firstname.lastname@example.org>
Date: 06/10/2002 22:20:32
>>>>> "Manuel" == Manuel Bouyer <email@example.com> writes:
Manuel> On Mon, Jun 10, 2002 at 02:57:32AM +0200, Markus W Kilbinger wrote:
>> - If 'who' is a -current or 1.6_BETA1 machine (no matter what
>> hardware, I see it with i386, alpha, sparc, macppc) ftp upload to
>> the internet becomes incredibly slow (starting with about 80 kb/sec,
>> falling down to about 10 kb/sec).
Manuel> Did you look at differences in sysctl settings ?
Very good guess! The causing difference is:
< net.inet.tcp.cwm = 0
> net.inet.tcp.cwm = 1
It's '0' in 1.5_RC2 and '1' in 1.6*. What does this kernel
variable/flag mean? I didn't change anything in my config relating
this... So it's a new default in 1.6*?
Thanks for the right question! :-)