netfilter: conntrack: resched gc again if eviction rate is high

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If we evicted a large fraction of the scanned conntrack entries re-schedule
the next gc cycle for immediate execution.

This triggers during tests where load is high, then drops to zero and
many connections will be in TW/CLOSE state with < 30 second timeouts.

Without this change it will take several minutes until conntrack count
comes back to normal.

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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Florian Westphal 2016-08-25 15:33:34 +02:00 • committed by Pablo Neira Ayuso

parent b87a2f9199

commit c023c0e4a0

1 changed files with 6 additions and 0 deletions

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net/netfilter/nf_conntrack_core.c

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