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dece40e848
The patch introduces nf_conntrack_cleanup_net_list(), which cleanups nf_conntrack for a list of netns and calls synchronize_net() only once for them all. This should reduce netns destruction time. I've measured cleanup time for 1k dummy net ns. Here are the results: <without the patch> # modprobe nf_conntrack # time modprobe -r nf_conntrack real 0m10.337s user 0m0.000s sys 0m0.376s <with the patch> # modprobe nf_conntrack # time modprobe -r nf_conntrack real 0m5.661s user 0m0.000s sys 0m0.216s Signed-off-by: Vladimir Davydov <vdavydov@parallels.com> Cc: Patrick McHardy <kaber@trash.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Acked-by: Gao feng <gaofeng@cn.fujitsu.com> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> |
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