KJTsanaktsidis

ruby 3.3.0dev (2023-03-14T07:07:59Z master ac65ce16e9) [aarch64-linux]
--------------  -----------  ----------  ---------  ----------  -----------  ------------
bench           interp (ms)  stddev (%)  yjit (ms)  stddev (%)  interp/yjit  yjit 1st itr
activerecord    206.9        0.9         97.5       1.3         2.12         0.62
hexapdf         4940.6       1.0         2415.3     2.2         2.05         1.20
liquid-c        88.9         2.0         61.9       3.4         1.44         0.30
liquid-render   300.5        1.7         135.3      3.1         2.22         0.64
mail            209.0        0.6         104.6      3.7         2.00         0.32
psych-load      4474.7       0.3         1887.1     0.1         2.37         2.24
railsbench      2794.2       0.5         1544.4     1.5         1.81         0.74

KJTsanaktsidis

RUBY_T_MASK = 0x1f
RUBY_T_STRING = 0x05
RUBY_T_ARRAY = 0x07
RSTRING_EMBED_LEN_SHIFT = 0x0e
RSTRING_EMBED_LEN_MASK = 0x7c000
RSTRING_NOEMBED = 0x2000
RARRAY_EMBED_FLAG = 0x2000
RARRAY_EMBED_LEN_SHIFT = 0x0f
RARRAY_EMBED_LEN_MASK = 0x18000
RUBY_ID_SCOPE_SHIFT = 0x4

KJTsanaktsidis

#include <errno.h>
#include <sched.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>

int main_parent(pid_t child_pid) {

KJTsanaktsidis

kj@kj-thinkpad ~ % cat rename.rb
#!/usr/bin/env ruby

require 'fiddle'

libruby = Fiddle::Handle.new
rb_set_class_path_string = Fiddle::Function.new(
  libruby['rb_set_class_path_string'],
  [
    Fiddle::TYPE_UINTPTR_T,

KJTsanaktsidis

#include <curl/curl.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#define NUM_THREADS 20

static pthread_mutex_t outlock = PTHREAD_MUTEX_INITIALIZER;

KJTsanaktsidis

-- Riak protocol decoder
-- Based on copypasta from https://wiki.wireshark.org/Protobuf.md
-- To use,
--   * Plase in ~/.local/lib/wireshark/plugins/riak.lua
--   * Check out https://github.com/protocolbuffers/protobuf somewhere
--   * Check out https://github.com/basho/riak_pb somewhere
--   * In the "ProtoBuf" protocol preferences, add protobuf/src and riak_pb/src
--     to the search paths. Make sure "load all" is checked for riak_pb, but NOT
--     for protobuf.
--   * right click a stream -> decode as -> "RIAK_PROTO"

KJTsanaktsidis

With memocache:

kj@kj-thinkpad ruby_memprofiler_pprof % ruby script/benchmark.rb
                                           user     system      total        real
no profiling (1)                      15.844936   0.469273  16.314209 ( 16.337021)
no profiling (2)                      14.966771   0.034934  15.001705 ( 15.020942)
with profiling (1%, no flush)         15.971306   0.477258  16.448564 ( 16.471195)
with reporting (1%, with flush)       17.402173   0.029948  17.432121 ( 17.454925)
with profiling (10%, no flush)        23.168302   0.289576  23.457878 ( 23.487329)
with reporting (10%, with flush)      48.194583   0.042943  48.237526 ( 48.290087)

KJTsanaktsidis

Samples: 8K of event 'cycles', Event count (approx.): 367381525322, DSO: ruby_memprofiler_pprof_ext.so
  Children      Self  Comm  Symbol
+   60.45%     0.00%  ruby  [.] collector_cdata_gc_mark                                                                              ▒
+   60.34%     0.03%  ruby  [.] collector_gc_mark_each_heap_sample                                                                   ▒
+   60.30%     0.26%  ruby  [.] mpp_sample_gc_mark                                                                                   ▒
+    0.74%     0.00%  ruby  [.] collector_tphook_newobj                                                                              ▒
     0.04%     0.00%  ruby  [.] collector_tphook_freeobj                                                                             ▒
     0.02%     0.01%  ruby  [.] mpp_rb_gc_disable_no_rest                                                                            ▒
     0.01%     0.01%  ruby  [.] backtracie_bt_gc_mark_moveable@plt          

KJTsanaktsidis

kj@kj-thinkpad ruby_memprofiler_pprof % ruby script/benchmark.rb
                                           user     system      total        real
no profiling (1)                      15.867480   0.473907  16.341387 ( 16.382863)
no profiling (2)                      14.955051   0.031678  14.986729 ( 15.025699)
with profiling (1%, no flush)         22.981310   0.484232  23.465542 ( 23.501221)
with reporting (1%, with flush)       24.261126   0.057177  24.318303 ( 24.353663)
with profiling (10%, no flush)       109.202573   0.291814 109.494387 (109.596998)
with reporting (10%, with flush)     154.720902   0.060936 154.781838 (154.920858)

KJTsanaktsidis

#0  heap_page_add_freeobj (objspace=0xeb9800, page=0x153da2c0, obj=139975204190960) at gc.c:1850
#1  0x00007f4e98cf35ab in gc_sweep_plane (objspace=0xeb9800, heap=0xeb9838, p=139975204190960, bitset=1, ctx=0x7ffe5ff47e20) at gc.c:5293
#2  0x00007f4e98cf39ad in gc_sweep_page (objspace=0xeb9800, size_pool=0xeb9828, heap=0xeb9838, ctx=0x7ffe5ff47e20) at gc.c:5389
#3  0x00007f4e98cf3f89 in gc_sweep_step (objspace=0xeb9800, size_pool=0xeb9828, heap=0xeb9838) at gc.c:5665
#4  0x00007f4e98cf485d in gc_sweep (objspace=0xeb9800) at gc.c:5900
#5  0x00007f4e98cf8c49 in gc_marks_rest (objspace=0xeb9800) at gc.c:8100
#6  0x00007f4e98cf8daf in gc_marks (objspace=0xeb9800, full_mark=0) at gc.c:8151
#7  0x00007f4e98cfae13 in gc_start (objspace=0xeb9800, reason=512) at gc.c:8967
#8  0x00007f4e98cfaa8a in garbage_collect (objspace=0xeb9800, reason=512) at gc.c:8853
#9  0x00007f4e98cfb567 in garbage_collect_with_gvl (objspace=0xeb9800, reason=512) at gc.c:9225