uttampawar

  Children      Self  Command          Shared Object               Symbol
+   12.26%     0.00%  swapper          [kernel.vmlinux]            [k] 0xffffffffb46000d4
+   12.24%     0.00%  swapper          [kernel.vmlinux]            [k] start_secondary
+   12.24%     0.04%  swapper          [kernel.vmlinux]            [k] cpu_startup_entry
+   12.12%     0.34%  swapper          [kernel.vmlinux]            [k] do_idle
+    7.63%     0.10%  swapper          [kernel.vmlinux]            [k] call_cpuidle
+    7.53%     0.04%  swapper          [kernel.vmlinux]            [k] cpuidle_enter
+    7.41%     0.16%  swapper          [kernel.vmlinux]            [k] cpuidle_enter_state
+    6.80%     0.12%  swapper          [kernel.vmlinux]            [k] acpi_idle_enter
+    6.67%     6.67%  swapper          [kernel.vmlinux]            [k] acpi_processor_ffh_cstate_enter

uttampawar

Samples: 41K of event 'cycles', Event count (approx.): 571106932626
Overhead  Command          Shared Object             Symbol
   9.69%  swapper          [kernel.vmlinux]          [k] acpi_processor_ffh_cstate_
   2.07%  conn2            mongod                    [.] __wt_row_search
   1.86%  conn2            libc-2.31.so              [.] __memmove_avx_unaligned_er
   0.97%  conn2            [kernel.vmlinux]          [k] copy_user_enhanced_fast_st
   0.94%  conn2            mongod                    [.] __wt_lex_compare_short
   0.89%  conn2            mongod                    [.] __config_next
   0.88%  conn2            mongod                    [.] __wt_row_leaf_key.constpro
   0.87%  conn2            mongod                    [.] __wt_checksum_hw

uttampawar

1) 

           0.74%    0.19%    0.00%    0.00%                0x28     1       1  1534622      0x7ffff783a29e      1581      1504       625     2450       158  [.] __pthread_mutex_trylock     libpthread-2.31.so  pthread_mutex_trylock.c:83 0{0,2-39,80,82-119>
            |
            ---__GI___clone (inlined)
               start_thread
               |          
               |--60.97%--runFunc (inlined)
               |          mongo::unique_function<void ()>::operator() (inlined)
               |          call (inlined)

uttampawar

00000000012fd660 <Builtins_LoadIC_Megamorphic>:
 12fd660:       f6 c2 01                test   $0x1,%dl
 12fd663:       0f 84 5d 0a 00 00       je     12fe0c6 <Builtins_LoadIC_Megamorphic+0xa66>
 12fd669:       4c 8b 42 ff             mov    -0x1(%rdx),%r8
 12fd66d:       4d 8b c8                mov    %r8,%r9
 12fd670:       49 c1 e9 0d             shr    $0xd,%r9
 12fd674:       4d 33 c8                xor    %r8,%r9
 12fd677:       44 8b 59 07             mov    0x7(%rcx),%r11d
 12fd67b:       45 8b c9                mov    %r9d,%r9d
 12fd67e:       45 03 cb                add    %r11d,%r9d

uttampawar

https://stackoverflow.com/questions/54962925/react-native-error-when-opening-realm-on-more-than-one-screen
https://github.com/realm/realm-js/tree/master/examples/ReactExample

uttampawar

import React from 'react';
import {
  SafeAreaView,
  StyleSheet,
  ScrollView,
  View,
  Text,
  StatusBar,
  Dimensions

uttampawar

echo "clang version is: 10" > check_environment
if [[ ! -e "stage1/build/CMakeCache.txt" ]]; then mkdir -p stage1/build ; cd stage1/build && cmake -G Ninja -DCMAKE_INSTALL_PREFIX=/mnt/sdb1/upawar/propeller-work/llvm-propeller/plo/stage1/install -DCMAKE_BUILD_TYPE=Release -DLLVM_OPTIMIZED_TABLEGEN=On -DLLVM_TARGETS_TO_BUILD="X86" -DLLVM_USE_LINKER="lld" -DCMAKE_C_COMPILER=/mnt/sdb1/upawar/propeller-work/llvm-propeller/build/bin/clang -DCMAKE_CXX_COMPILER=/mnt/sdb1/upawar/propeller-work/llvm-propeller/build/bin/clang++ -DCMAKE_ASM_COMPILER=/mnt/sdb1/upawar/propeller-work/llvm-propeller/build/bin/clang  -DLLVM_ENABLE_PROJECTS="clang;compiler-rt;lld" /mnt/sdb1/upawar/propeller-work/llvm-propeller/llvm; fi
-- The C compiler identification is Clang 10.0.0
-- The CXX compiler identification is Clang 10.0.0
-- The ASM compiler identification is unknown
-- Found assembler: /mnt/sdb1/upawar/propeller-work/llvm-propeller/build/bin/clang
-- Check for working C compiler: /mnt/sdb1/upawar/propeller-work/llvm-propeller/buil

uttampawar

Compiler	LLVM v10.0	(branch: plo-dev, commit id: 2031626e55e6f8cd67aafb53142ada64a97db0d1)

Workload 1: webtooling (https://github.com/v8/web-tooling-benchmark)
Webtooling is simple to run. Only thing you need is to build node binary (Node.js runtime) 

	                               node-orignal	 node-with-propeller	with-propeller/orig  
score (runs/s)	                        10.15	            9.53	      0.939 <---- 7% regression in absolute throughput
binary-size (Bytes)	               66,552,488   	  75,208,088 	      1.130 <--- size increased
cycles	                      403,260,331,520	 419,827,132,716	      1.041 <--- 4% more cycles
instructions	                701,961,055,882	 700,658,118,964	      0.998 <--- instructions fairely remained same

uttampawar

Hardware information:
OS: 4.15.0-58-generic (uname -r)
VERSION="18.04.3 LTS (Bionic Beaver)"
GCC: gcc version 7.4.0 (Ubuntu 7.4.0-1ubuntu1~18.04.1)
GNU ld (GNU Binutils for Ubuntu) 2.30

$ clang++ -O2 main.cc callee.cc -fpropeller-label -o a.out.labels -fuse-ld=lld
$ perf record -e cycles:u -j any,u -- ./a.out.labels 1000000000 2 >& /dev/null

$LLVM_DIR/llvm-propeller/create_llvm_prof --format=propeller --binary=./a.out.labels --profile=perf.data --out=perf.propeller

uttampawar

$ cat perf.propeller 
@a.out.labels
Symbols
1 2b N_start
2 2 N_dl_relocate_static_pie
3 0 Nderegister_tm_clones
4 0 Nregister_tm_clones
5 0 N__do_global_dtors_aux
6 0 Nframe_dummy
7 3d Nmain