packet drop with intel gigabit / marwell gigabit

Stanislaw Halik weirdo at tehran.lain.pl
Sun Mar 19 13:22:29 UTC 2006


On Sat, Mar 18, 2006, OxY wrote:
> i increased hz from 2000 to 5000, now the packet loss is decreased
> from 5-6% to 0.6-0,8% !!!
> huge improve!
> should i increase hz more?

won't increasing HZ over 1000 break TCP support? from
<20051216134759.795206f3.dokas at oitsec.umn.edu> on freebsd-pf@:

#v+
> So it's not that far off, the server seems to increment timestamps at
> 0.5 ms per tick (2 kHz), instead of the RFC mandated 1 ms (1 kHz).
[...]
Bingo (I think).  I found the following in the firewall's kernel config:
  
  options HZ=2000
#v-

regards,

-- 
w.
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