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Re: [PATCH] repairing rtcache killer

To: Robert.Olsson@xxxxxxxxxxx (Robert Olsson)
Subject: Re: [PATCH] repairing rtcache killer
From: kuznet@xxxxxxxxxxxxx
Date: Wed, 6 Aug 2003 22:34:51 +0400 (MSD)
Cc: Robert.Olsson@xxxxxxxxxxx, davem@xxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <16177.18187.429888.128929@xxxxxxxxxxxx> from "Robert Olsson" at Aug 06, 2003 08:20:59 PM
Sender: netdev-bounce@xxxxxxxxxxx
Hello!

>  No correct RCU patches are not applied but even before the RCU pathes we 
>  didn't see dst cache overflow during DoS if the routing table was fully 
>  loaded and we used hash chain limit patch. 

Sure. :-) Robert, did not we discover a week ago that the reason of rcu
stalls is rt_run_flush() which runs only when routes change? :-)

By the way, to refresh your memory, months ago there was another reason
for overflows. It was fixed by setting sane value to ip_rt_gc_min_interval.
RCU showed on surface after this.

Alexey

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