Fix perf cmd and add time for mac (#20)

justfile

@@ -41,8 +41,14 @@ publish:
 
 # Profiling
 time CMD:
-    sync; echo 3 | sudo tee /proc/sys/vm/drop_caches
-    time /usr/bin/time -f "\n%E (hr:min:sec): Real time\n%S (sec): Total number of CPU-seconds used by the system on behalf of the process (in kernel mode)\n%U (sec): Total number of CPU-seconds that the process used directly (in user mode)\n%M kB: Max resident set size of the process during its lifetime\n%W: Number of times the process was swapped out of memory\n%P: Percentage of CPU that this job got." {{CMD}}
+  sync; echo 3 | sudo tee /proc/sys/vm/drop_caches
+  time /usr/bin/time -f "\n%E (hr:min:sec): Real time\n%S (sec): Total number of CPU-seconds used by the system on behalf of the process (in kernel mode)\n%U (sec): Total number of CPU-seconds that the process used directly (in user mode)\n%M kB: Max resident set size of the process during its lifetime\n%W: Number of times the process was swapped out of memory\n%P: Percentage of CPU that this job got." {{CMD}}
+
+# sync - force completion of pending disk writes (flush cache) 
+# purge - force disk cache to be purged (flushed and emptied)
+time-mac CMD:
+  sync && sudo purge
+  gtime -f "\n%E (hr:min:sec): Real time\n%S (sec): Total number of CPU-seconds used by the system on behalf of the process (in kernel mode)\n%U (sec): Total number of CPU-seconds that the process used directly (in user mode)\n%M kB: Max resident set size of the process during its lifetime\n%W: Number of times the process was swapped out of memory\n%P: Percentage of CPU that this job got." {{CMD}}
 
 # Generate flamegraphs
 # ex cmd: $ cargo-flamegraph flamegraph download -d dmp -n 1,2,3,14,17,18  -> $ just flmg "download -d dmp -n 1,2,3,14,17,18"
@@ -51,5 +57,5 @@ flmg CMD:
   cargo-flamegraph flamegraph {{CMD}}
 
 # View perf.data file generated by flamegraph (--no-children flag is useful to sort by each individual stack call instead of by the accumulated callchain of children to parent)
-  perf PATH-TO-PERF:
-    perf report -i {{PATH-TO-PERF}}
+perf PATH-TO-PERF:
+  perf report -i {{PATH-TO-PERF}}