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YJIT: Make more stats accessible from Ruby code (#6685)

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Takashi Kokubun 2022-11-08 09:36:29 -08:00 committed by GitHub
parent b7b78f062f
commit 5643d2bb9a
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Notes: git 2022-11-08 17:37:00 +00:00 
Merged-By: maximecb <maximecb@ruby-lang.org>
1 changed files with 29 additions and 20 deletions
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yjit.rb
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@ -133,7 +133,30 @@ module RubyVM::YJIT
# Return a hash for statistics generated for the --yjit-stats command line option.
# Return nil when option is not passed or unavailable.
def self.runtime_stats
Primitive.rb_yjit_get_stats
stats = Primitive.rb_yjit_get_stats
return stats if stats.nil? || !Primitive.rb_yjit_stats_enabled_p
side_exits = total_exit_count(stats)
total_exits = side_exits + stats[:leave_interp_return]
# Number of instructions that finish executing in YJIT.
# See :count-placement: about the subtraction.
retired_in_yjit = stats[:exec_instruction] - side_exits
# Average length of instruction sequences executed by YJIT
avg_len_in_yjit = retired_in_yjit.to_f / total_exits
# Proportion of instructions that retire in YJIT
total_insns_count = retired_in_yjit + stats[:vm_insns_count]
yjit_ratio_pct = 100.0 * retired_in_yjit.to_f / total_insns_count
# Make those stats available in RubyVM::YJIT.runtime_stats as well
stats[:side_exit_count] = side_exits
stats[:total_exit_count] = total_exits
stats[:ratio_in_yjit] = yjit_ratio_pct
stats[:avg_len_in_yjit] = avg_len_in_yjit
stats
end
# Produce disassembly for an iseq
@ -198,20 +221,6 @@ module RubyVM::YJIT
print_counters(stats, prefix: 'opt_getinlinecache_', prompt: 'opt_getinlinecache exit reasons: ')
print_counters(stats, prefix: 'invalidate_', prompt: 'invalidation reasons: ')
side_exits = total_exit_count(stats)
total_exits = side_exits + stats[:leave_interp_return]
# Number of instructions that finish executing in YJIT.
# See :count-placement: about the subtraction.
retired_in_yjit = stats[:exec_instruction] - side_exits
# Average length of instruction sequences executed by YJIT
avg_len_in_yjit = retired_in_yjit.to_f / total_exits
# Proportion of instructions that retire in YJIT
total_insns_count = retired_in_yjit + stats[:vm_insns_count]
yjit_ratio_pct = 100.0 * retired_in_yjit.to_f / total_insns_count
# Number of failed compiler invocations
compilation_failure = stats[:compilation_failure]
@ -231,13 +240,13 @@ module RubyVM::YJIT
$stderr.puts "code_gc_count: " + ("%10d" % stats[:code_gc_count])
$stderr.puts "num_gc_obj_refs: " + ("%10d" % stats[:num_gc_obj_refs])
$stderr.puts "side_exit_count: " + ("%10d" % side_exits)
$stderr.puts "total_exit_count: " + ("%10d" % total_exits)
$stderr.puts "total_insns_count: " + ("%10d" % total_insns_count)
$stderr.puts "side_exit_count: " + ("%10d" % stats[:side_exit_count])
$stderr.puts "total_exit_count: " + ("%10d" % stats[:side_exit_count])
$stderr.puts "total_insns_count: " + ("%10d" % stats[:total_exit_count])
$stderr.puts "vm_insns_count: " + ("%10d" % stats[:vm_insns_count])
$stderr.puts "yjit_insns_count: " + ("%10d" % stats[:exec_instruction])
$stderr.puts "ratio_in_yjit: " + ("%9.1f" % yjit_ratio_pct) + "%"
$stderr.puts "avg_len_in_yjit: " + ("%10.1f" % avg_len_in_yjit)
$stderr.puts "ratio_in_yjit: " + ("%9.1f" % stats[:ratio_in_yjit]) + "%"
$stderr.puts "avg_len_in_yjit: " + ("%10.1f" % stats[:avg_len_in_yjit])
print_sorted_exit_counts(stats, prefix: "exit_")
end