From: sam.saffron@... Date: 2018-02-19T01:10:32+00:00 Subject: [ruby-core:85623] [Ruby trunk Feature#14489] MJIT needs a reusable cache Issue #14489 has been reported by sam.saffron (Sam Saffron). ---------------------------------------- Feature #14489: MJIT needs a reusable cache https://bugs.ruby-lang.org/issues/14489 * Author: sam.saffron (Sam Saffron) * Status: Open * Priority: Normal * Assignee: * Target version: ---------------------------------------- Currently on Discourse boot I notice a few minutes of jitting every time you boot it: This is a redacted output: https://gist.github.com/SamSaffron/4e18c2dacf476f1f27275f5b5d7bbb97 CPU is spinning hard compiling temp file after temp file for **minutes**: > JIT success (213.1ms): platform_string@/home/sam/.rbenv/versions/master/lib/ruby/gems/2.6.0/gems/bundler-1.16.1/lib/bundler/lazy_specification.rb:18 -> /tmp/_ruby_mjit_p6914u199.c and so on. Instead, mjit should have a reusable cache on disk it first tries fetching from prior to re-compiling. It can use an ISEQ SHA1 hash as the key to the cache. -- https://bugs.ruby-lang.org/ Unsubscribe: