Don't clean up HHVM perf maps

facebookarchive · May 26, 2015 · 4018092 · 4018092
1 parent c47e806
commit 4018092
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/conf/php.ini b/conf/php.ini
@@ -23,6 +23,11 @@ hhvm.hhir_generate_asserts=0
 ; Off by default in OSS builds, but on by default in Facebook's internal builds;
 ; this provides consistency for FB engineers, no-op for others.
 hhvm.force_hh=0
+; When running, HHVM maintains /tmp/perf-$PID.map mapping memory addresses to
+; jitted functions - but this gets removed when HHVM exits. This option stops
+; HHVM from automatically removing it, so allows you to use 'perf report' after
+; the process has exited. No impact on HHVM's actual performance.
+hhvm.keep_perf_pid_map=1
 
 ;;;;;;;;;;;;;;;
 ; PHP5/7 Only ;