Clojurians Log v2

Generally things around interop throw rather than check

usually it’s better to check how you got to the npe in the first place and fix it earlier

Is there still some known slowness with Java11 using Clojure 1.10.1-beta2? Run a set of micro-benchmarks and it seems to be some tens of percents slower than with java8

➜  porsas git:(master) ✗ lein perf repl

nREPL server started on port 50322 on host 127.0.0.1 - <nrepl://127.0.0.1:50322>
REPL-y 0.4.3, nREPL 0.6.0
Clojure 1.10.1-beta2
OpenJDK 64-Bit Server VM 11.0.2+9

user=&gt; (require '[porsas.core-test :as p])
user=&gt; (p/perf-test-one)

 391 ns
 413 ns
 381 ns

➜  porsas git:(master) ✗ lein perf repl

nREPL server started on port 50331 on host 127.0.0.1 - <nrepl://127.0.0.1:50331>
REPL-y 0.4.3, nREPL 0.6.0
Clojure 1.10.1-beta2
Java HotSpot(TM) 64-Bit Server VM 1.8.0_172-b11

user=&gt; (require '[porsas.core-test :as p])
user=&gt; (p/perf-test-one)

 335 ns
 351 ns
 347 ns

(a lot of noice removed from console print)

https://github.com/metosin/porsas

tested with other libs too, the slowdown seems consistent.

on macOS 10.14.4

I have not generally seen that

It would be more useful to compare vs Java 11.0.1 or Clojure 1.10.0

I also inherently disbelieve all timings done under lein

I'll rerun with those and report if still see that.

FYI, we just deployed Clojure 1.10.1 Beta 2 to production across all services.

(we're still on JDK8 tho')