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| author | Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz> | 2021-03-08 04:24:12 +0300 |
|---|---|---|
| committer | Pablo Neira Ayuso <pablo@netfilter.org> | 2021-03-15 20:42:01 +0300 |
| commit | d3d40f237480abf3268956daf18cdc56edd32834 (patch) | |
| tree | 0225e618a9c6241060f59f67be101d8a0ab711e5 /scripts/gdb/linux/timerlist.py | |
| parent | abe7034b9a8d57737e80cc16d60ed3666990bdbf (diff) | |
| download | linux-d3d40f237480abf3268956daf18cdc56edd32834.tar.xz | |
Revert "netfilter: x_tables: Switch synchronization to RCU"
This reverts commit cc00bcaa589914096edef7fb87ca5cee4a166b5c.
This (and the preceding) patch basically re-implemented the RCU
mechanisms of patch 784544739a25. That patch was replaced because of the
performance problems that it created when replacing tables. Now, we have
the same issue: the call to synchronize_rcu() makes replacing tables
slower by as much as an order of magnitude.
Prior to using RCU a script calling "iptables" approx. 200 times was
taking 1.16s. With RCU this increased to 11.59s.
Revert these patches and fix the issue in a different way.
Signed-off-by: Mark Tomlinson <mark.tomlinson@alliedtelesis.co.nz>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Diffstat (limited to 'scripts/gdb/linux/timerlist.py')
0 files changed, 0 insertions, 0 deletions