mirror of
http://git.haproxy.org/git/haproxy.git/
synced 2025-02-21 13:16:57 +00:00
403bfbb130
As reported in issue #335, a lot of contention happens on the PATLRU lock when performing expensive regex lookups. This is absurd since the purpose of the LRU cache was to have a fast cache for expressions, thus the cache must not be shared between threads and must remain lockless. This commit makes the LRU cache thread-local and gets rid of the PATLRU lock. A test with 7 threads on 4 cores climbed from 67kH/s to 369kH/s, or a scalability factor of 5.5. Given the huge performance difference and the regression caused to users migrating from processes to threads, this should be backported at least to 2.0. Thanks to Brian Diekelman for his detailed report about this regression. |
||
|---|---|---|
| .. | ||
| design-thoughts | ||
| internals | ||
| lua-api | ||
| 51Degrees-device-detection.txt | ||
| acl.fig | ||
| architecture.txt | ||
| close-options.txt | ||
| coding-style.txt | ||
| configuration.txt | ||
| cookie-options.txt | ||
| DeviceAtlas-device-detection.txt | ||
| gpl.txt | ||
| haproxy.1 | ||
| intro.txt | ||
| lgpl.txt | ||
| linux-syn-cookies.txt | ||
| lua.txt | ||
| management.txt | ||
| netscaler-client-ip-insertion-protocol.txt | ||
| network-namespaces.txt | ||
| peers-v2.0.txt | ||
| peers.txt | ||
| proxy-protocol.txt | ||
| queuing.fig | ||
| regression-testing.txt | ||
| seamless_reload.txt | ||
| SOCKS4.protocol.txt | ||
| SPOE.txt | ||
| WURFL-device-detection.txt | ||