Felipe Lessa b2a9beba3c Use a cache for session cookie's expiration time. ... The following HelloWorld app was used as benchmark: data HelloWorld = HelloWorld mkYesod "HelloWorld" [parseRoutes| / HomeR GET |] instance Yesod HelloWorld where -- makeSessionBackend = const $ return Nothing getHomeR = return . RepPlain . toContent $ "Hello World!" main :: IO () main = warp 8080 HelloWorld The benchmark was tested with httperf under the following environments: [vanilla-nosession] Released yesod-core 1.1.1.1, but without sessions. [vanilla-session] Released yesod-core 1.1.1.1 (with sessions). [faster-session-1] With patch 065e33a, "Faster, leaner implementation of putTime/getTime". [faster-session-2] With this commit. Performance results: A) Testing with: httperf --hog --client=0/1 --server=localhost \ --port=8080 --uri=/ --rate=1000 \ --send-buffer=4096 --recv-buffer=16384 \ --num-conns=100 --wsess=1000,60,1 \ --burst-length=20 --session-cookie Results: vanilla-nosession: 19187.7 req/s (0.1 ms/req) vanilla-session: 2523.3 req/s (0.4 ms/req) faster-session-1: 2933.5 req/s (0.3 ms/req) faster-session-2: 2957.5 req/s (0.3 ms/req) This test benchmarks both saving and loading the session. Interestingly, this commit provides only a small performance increase. B) Testing with: httperf --hog --client=0/1 --server=localhost \ --port=8080 --uri=/ --rate=1000 \ --send-buffer=4096 --recv-buffer=16384 \ --num-conns=100 --num-calls=1000 \ --burst-length=20 Results: vanilla-nosession: 43548.7 req/s (0.0 ms/req) vanilla-session: 3609.4 req/s (0.3 ms/req) faster-session-1: 3454.9 req/s (0.3 ms/req) faster-session-2: 3786.9 req/s (0.3 ms/req) This test benchmarks only saving the session. Strangely, faster-session-1 was worse than vanilla-session (while isolated tests show that the new putTime should be +70x faster). However, there is a non-negligible performance increase on faster-session-2.		2012-09-05 01:35:10 -03:00
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Internal	Use a cache for session cookie's expiration time.	2012-09-05 01:35:10 -03:00
Content.hs	Strictness annotations on Content	2012-07-25 08:56:46 +03:00
Core.hs	yesod-core: New function runFakeHandler.	2012-08-21 13:38:42 -03:00
Dispatch.hs	Updated fast-logger/wai-logger	2012-07-05 11:04:04 +03:00
Handler.hs	yesod-core: Whitespace.	2012-08-27 14:50:04 -03:00
Internal.hs	http-types 0.7	2012-07-06 16:24:24 +03:00
Message.hs	Simple module doc pointing to shakespeare-i18n.	2012-01-15 08:32:47 -08:00
Request.hs	Explicit exports for FileInfo fields	2012-07-02 11:20:17 +03:00
Widget.hs	Deprecated addWidget	2012-08-03 07:38:21 +03:00