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A channel for discussing and asking questions about Funcool libraries https://github.com/funcool/
mccraigmccraig 2019-09-17T05:45:12.029Z
@mpenet are you thinking about replacing manifold?
mpenet 2019-09-17T08:38:32.034500Z
yes, aleph too, exploring the idea at the very least.
mpenet 2019-09-17T08:41:43.034700Z
we want to retain a very similar api for deferreds at least and we're likely going to go a different way (somewhat) for "streams" given what we will base it upon
mccraigmccraig 2019-09-17T09:19:15.035Z
hmm. i'm interested in this then @mpenet - we're very heavily manifold based, with lots of both deferred and stream processing
mccraigmccraig 2019-09-17T09:19:27.035200Z
what are you thinking for stream processing ?
ikitommi 2019-09-17T06:05:56.031800Z
@niwinz nice perf gain. How does the raw perf compare to plain java CF chain? E.g. no protocols, extra wrapping etc.
niwinz 2019-09-17T07:08:24.033400Z
the last output was that. simple promise.core/then' usage vs plain completablefuture (no protocols no extra wrappings
niwinz 2019-09-17T07:08:34.033600Z
(defn simple-promise-chain-5-raw
[]
@(as-> (CompletableFuture/completedFuture 1) $
(-> $
(p/then' inc)
(p/then' inc)
(p/then' inc)
(p/then' inc)
(p/then' inc))))
(defn simple-completable-chain-5-raw
[]
@(as-> (CompletableFuture/completedFuture 1) $
(.thenApply ^CompletionStage $ ^Function (pu/->FunctionWrapper inc))
(.thenApply ^CompletionStage $ ^Function (pu/->FunctionWrapper inc))
(.thenApply ^CompletionStage $ ^Function (pu/->FunctionWrapper inc))
(.thenApply ^CompletionStage $ ^Function (pu/->FunctionWrapper inc))
(.thenApply ^CompletionStage $ ^Function (pu/->FunctionWrapper inc))))
niwinz 2019-09-17T07:09:30.033900Z
this shows a lightweight overhead of promise just for additional function wrapping and the protocols...
niwinz 2019-09-17T07:10:14.034100Z
ut the real difference is promesa:`139.088517 ns (97.5%)` vs cf:`134.078223 ns (97.5%)`
ikitommi 2019-09-17T07:10:57.034300Z
oh, that’s great
niwinz 2019-09-17T10:31:49.037200Z
wow, jdk12 is practically duplicates the performance: jdk8 => 112ns, jdk12 => 62ns in the same operation
niwinz 2019-09-17T10:34:56.038400Z
didn't expect that...
ikitommi 2019-09-17T12:08:49.040300Z
oh my, will need to test with my techempower suite, runs on java8 and the async db handler uses CFs.