deps/FlameGraph/.travis.yml

-# Using the container-based infrastructure
-sudo: false
-
-language: perl
-perl:
-  - "5.24"
-  - "5.22"
-  - "5.20"
-  - "5.18"
-  - "5.16"
-  - "5.14"
-  - "5.12"
-  - "5.10"
-
-install:
-  /bin/true
-
-script:
-  ./test.sh

deps/FlameGraph/README.md

-# Flame Graphs visualize profiled code
-
-Main Website: http://www.brendangregg.com/flamegraphs.html
-
-Example (click to zoom):
-[![Example](http://www.brendangregg.com/FlameGraphs/cpu-bash-flamegraph.svg)](http://www.brendangregg.com/FlameGraphs/cpu-bash-flamegraph.svg)
-
-Other sites:
-- The Flame Graph article in ACMQ and CACM: http://queue.acm.org/detail.cfm?id=2927301 http://cacm.acm.org/magazines/2016/6/202665-the-flame-graph/abstract
-- CPU profiling using Linux perf\_events, DTrace, SystemTap, or ktap: http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html
-- CPU profiling using XCode Instruments: http://schani.wordpress.com/2012/11/16/flame-graphs-for-instruments/  
-- CPU profiling using Xperf.exe: http://randomascii.wordpress.com/2013/03/26/summarizing-xperf-cpu-usage-with-flame-graphs/  
-- Memory profiling: http://www.brendangregg.com/FlameGraphs/memoryflamegraphs.html  
-- Other examples, updates, and news: http://www.brendangregg.com/flamegraphs.html#Updates
-
-Flame graphs can be created in three steps:
-
-1. Capture stacks
-2. Fold stacks
-3. flamegraph.pl
-
-1\. Capture stacks
-=================
-Stack samples can be captured using Linux perf\_events, FreeBSD pmcstat (hwpmc), DTrace, SystemTap, and many other profilers. See the stackcollapse-\* converters.
-
-### Linux perf\_events
-
-Using Linux perf\_events (aka "perf") to capture 60 seconds of 99 Hertz stack samples, both user- and kernel-level stacks, all processes:
-
-```
-# perf record -F 99 -a -g -- sleep 60
-# perf script > out.perf
-```
-
-Now only capturing PID 181:
-
-```
-# perf record -F 99 -p 181 -g -- sleep 60
-# perf script > out.perf
-```
-
-### DTrace
-
-Using DTrace to capture 60 seconds of kernel stacks at 997 Hertz:
-
-```
-# dtrace -x stackframes=100 -n 'profile-997 /arg0/ { @[stack()] = count(); } tick-60s { exit(0); }' -o out.kern_stacks
-```
-
-Using DTrace to capture 60 seconds of user-level stacks for PID 12345 at 97 Hertz:
-
-```
-# dtrace -x ustackframes=100 -n 'profile-97 /pid == 12345 && arg1/ { @[ustack()] = count(); } tick-60s { exit(0); }' -o out.user_stacks
-```
-
-60 seconds of user-level stacks, including time spent in-kernel, for PID 12345 at 97 Hertz:
-
-```
-# dtrace -x ustackframes=100 -n 'profile-97 /pid == 12345/ { @[ustack()] = count(); } tick-60s { exit(0); }' -o out.user_stacks
-```
-
-Switch `ustack()` for `jstack()` if the application has a ustack helper to include translated frames (eg, node.js frames; see: http://dtrace.org/blogs/dap/2012/01/05/where-does-your-node-program-spend-its-time/).  The rate for user-level stack collection is deliberately slower than kernel, which is especially important when using `jstack()` as it performs additional work to translate frames.
-
-2\. Fold stacks
-==============
-Use the stackcollapse programs to fold stack samples into single lines.  The programs provided are:
-
-- `stackcollapse.pl`: for DTrace stacks
-- `stackcollapse-perf.pl`: for Linux perf_events "perf script" output
-- `stackcollapse-pmc.pl`: for FreeBSD pmcstat -G stacks
-- `stackcollapse-stap.pl`: for SystemTap stacks
-- `stackcollapse-instruments.pl`: for XCode Instruments
-- `stackcollapse-vtune.pl`: for Intel VTune profiles
-- `stackcollapse-ljp.awk`: for Lightweight Java Profiler
-- `stackcollapse-jstack.pl`: for Java jstack(1) output
-- `stackcollapse-gdb.pl`: for gdb(1) stacks
-- `stackcollapse-go.pl`: for Golang pprof stacks
-- `stackcollapse-vsprof.pl`: for Microsoft Visual Studio profiles
-
-Usage example:
-
-```
-For perf_events:
-$ ./stackcollapse-perf.pl out.perf > out.folded
-
-For DTrace:
-$ ./stackcollapse.pl out.kern_stacks > out.kern_folded
-```
-
-The output looks like this:
-
-```
-unix`_sys_sysenter_post_swapgs 1401
-unix`_sys_sysenter_post_swapgs;genunix`close 5
-unix`_sys_sysenter_post_swapgs;genunix`close;genunix`closeandsetf 85
-unix`_sys_sysenter_post_swapgs;genunix`close;genunix`closeandsetf;c2audit`audit_closef 26
-unix`_sys_sysenter_post_swapgs;genunix`close;genunix`closeandsetf;c2audit`audit_setf 5
-unix`_sys_sysenter_post_swapgs;genunix`close;genunix`closeandsetf;genunix`audit_getstate 6
-unix`_sys_sysenter_post_swapgs;genunix`close;genunix`closeandsetf;genunix`audit_unfalloc 2
-unix`_sys_sysenter_post_swapgs;genunix`close;genunix`closeandsetf;genunix`closef 48
-[...]
-```
-
-3\. flamegraph.pl
-================
-Use flamegraph.pl to render a SVG.
-
-```
-$ ./flamegraph.pl out.kern_folded > kernel.svg
-```
-
-An advantage of having the folded input file (and why this is separate to flamegraph.pl) is that you can use grep for functions of interest. Eg:
-
-```
-$ grep cpuid out.kern_folded | ./flamegraph.pl > cpuid.svg
-```
-
-Provided Examples
-=================
-
-### Linux perf\_events
-
-An example output from Linux "perf script" is included, gzip'd, as example-perf-stacks.txt.gz. The resulting flame graph is example-perf.svg:
-
-[![Example](http://www.brendangregg.com/FlameGraphs/example-perf.svg)](http://www.brendangregg.com/FlameGraphs/example-perf.svg)
-
-You can create this using:
-
-```
-$ gunzip -c example-perf-stacks.txt.gz | ./stackcollapse-perf.pl --all | ./flamegraph.pl --color=java --hash > example-perf.svg
-```
-
-This shows my typical workflow: I'll gzip profiles on the target, then copy them to my laptop for analysis. Since I have hundreds of profiles, I leave them gzip'd!
-
-Since this profile included Java, I used the flamegraph.pl --color=java palette. I've also used stackcollapse-perf.pl --all, which includes all annotations that help flamegraph.pl use separate colors for kernel and user level code. The resulting flame graph uses: green == Java, yellow == C++, red == user-mode native, orange == kernel.
-
-This profile was from an analysis of vert.x performance. The benchmark client, wrk, is also visible in the flame graph.
-
-### DTrace
-
-An example output from DTrace is also included, example-dtrace-stacks.txt, and the resulting flame graph, example-dtrace.svg:
-
-[![Example](http://www.brendangregg.com/FlameGraphs/example-dtrace.svg)](http://www.brendangregg.com/FlameGraphs/example-dtrace.svg)
-
-You can generate this using:
-
-```
-$ ./stackcollapse.pl example-stacks.txt | ./flamegraph.pl > example.svg
-```
-
-This was from a particular performance investigation: the Flame Graph identified that CPU time was spent in the lofs module, and quantified that time.
-
-
-Options
-=======
-See the USAGE message (--help) for options:
-
-USAGE: ./flamegraph.pl [options] infile > outfile.svg
-
-	--title TEXT     # change title text
-	--subtitle TEXT  # second level title (optional)
-	--width NUM      # width of image (default 1200)
-	--height NUM     # height of each frame (default 16)
-	--minwidth NUM   # omit smaller functions (default 0.1 pixels)
-	--fonttype FONT  # font type (default "Verdana")
-	--fontsize NUM   # font size (default 12)
-	--countname TEXT # count type label (default "samples")
-	--nametype TEXT  # name type label (default "Function:")
-	--colors PALETTE # set color palette. choices are: hot (default), mem,
-	                 # io, wakeup, chain, java, js, perl, red, green, blue,
-	                 # aqua, yellow, purple, orange
-	--bgcolors COLOR # set background colors. gradient choices are yellow
-	                 # (default), blue, green, grey; flat colors use "#rrggbb"
-	--hash           # colors are keyed by function name hash
-	--cp             # use consistent palette (palette.map)
-	--reverse        # generate stack-reversed flame graph
-	--inverted       # icicle graph
-	--flamechart     # produce a flame chart (sort by time, do not merge stacks)
-	--negate         # switch differential hues (blue<->red)
-	--notes TEXT     # add notes comment in SVG (for debugging)
-	--help           # this message
-
-	eg,
-	./flamegraph.pl --title="Flame Graph: malloc()" trace.txt > graph.svg
-
-As suggested in the example, flame graphs can process traces of any event,
-such as malloc()s, provided stack traces are gathered.
-
-
-Consistent Palette
-==================
-If you use the `--cp` option, it will use the $colors selection and randomly
-generate the palette like normal. Any future flamegraphs created using the `--cp`
-option will use the same palette map. Any new symbols from future flamegraphs
-will have their colors randomly generated using the $colors selection.
-
-If you don't like the palette, just delete the palette.map file.
-
-This allows your to change your colorscheme between flamegraphs to make the
-differences REALLY stand out.
-
-Example:
-
-Say we have 2 captures, one with a problem, and one when it was working
-(whatever "it" is):
-
-```
-cat working.folded | ./flamegraph.pl --cp > working.svg
-# this generates a palette.map, as per the normal random generated look.
-
-cat broken.folded | ./flamegraph.pl --cp --colors mem > broken.svg
-# this svg will use the same palette.map for the same events, but a very
-# different colorscheme for any new events.
-```
-
-Take a look at the demo directory for an example:
-
-palette-example-working.svg  
-palette-example-broken.svg

deps/FlameGraph/aix-perf.pl

-#!/usr/bin/perl
-
-use Getopt::Std;
-
-getopt('urt');
-
-unless ($opt_r && $opt_t){
-	print "Usage: $0 [ -u user] -r sample_count -t sleep_time\n";
-	exit(0);
-}
-
-my $i;
-my @proc = "";
-for ($i = 0; $i < $opt_r ; $i++){
-    if ($opt_u){
-	$proc = `/usr/sysv/bin/ps -u $opt_u `;
-	$proc =~ s/^.*\n//;
-	$proc =~ s/\s*(\d+).*\n/\1 /g;
-	@proc = split(/\s+/,$proc);
-    } else {
-	opendir(my $dh, '/proc') || die "Cant't open /proc: $!";
-	@proc = grep { /^[\d]+$/ } readdir($dh);
-	closedir ($dh);
-    }	
-
-    foreach my $pid (@proc){
-	my $command = "/usr/bin/procstack $pid";
-	print `$command 2>/dev/null`;
-    }
-    select(undef, undef, undef, $opt_t);
-}

deps/FlameGraph/demos/README

-Flame Graph demos gathered and created for the talk "Blazing Performance with
-Flame Graphs" at USENIX/LISA 2013.
-
-These SVGs can not be seen on github directly; save them locally first (git
-clone or download), then open them in a browser (file://...).

deps/FlameGraph/demos/cpu-grep.svg

-<?xml version="1.0" standalone="no"?>
-<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<svg version="1.1" width="1200" height="390" onload="init(evt)" viewBox="0 0 1200 390" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-<defs >
-	<linearGradient id="background" y1="0" y2="1" x1="0" x2="0" >
-		<stop stop-color="#eeeeee" offset="5%" />
-		<stop stop-color="#eeeeb0" offset="95%" />
-	</linearGradient>
-</defs>
-<style type="text/css">
-	.func_g:hover { stroke:black; stroke-width:0.5; }
-</style>
-<script type="text/ecmascript">
-<![CDATA[
-	var details;
-	function init(evt) { details = document.getElementById("details").firstChild; }
-	function s(info) { details.nodeValue = "Function: " + info; }
-	function c() { details.nodeValue = ' '; }
-]]>
-</script>
-<rect x="0.0" y="0" width="1200.0" height="390.0" fill="url(#background)"  />
-<text text-anchor="middle" x="600" y="40" font-size="25" font-family="Verdana" fill="rgb(0,0,0)"  >Flame Graph</text>
-<text text-anchor="" x="10" y="365" font-size="20" font-family="Verdana" fill="rgb(0,0,0)" id="details" > </text>
-<g class="func_g" onmouseover="s('libc.so.1`_fwrite_unlocked (17 samples, 0.04%)')" onmouseout="c()">
-<title>libc.so.1`_fwrite_unlocked (17 samples, 0.04%)</title><rect x="1188.1" y="107" width="0.4" height="25.0" fill="rgb(216,95,1)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`memcpy (13 samples, 0.03%)')" onmouseout="c()">
-<title>libc.so.1`memcpy (13 samples, 0.03%)</title><rect x="1189.0" y="107" width="0.3" height="25.0" fill="rgb(232,106,54)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`_UTF8_mbrtowc (12,492 samples, 25.80%)')" onmouseout="c()">
-<title>libc.so.1`_UTF8_mbrtowc (12,492 samples, 25.80%)</title><rect x="754.5" y="107" width="304.4" height="25.0" fill="rgb(246,93,50)" rx="2" ry="2" />
-<text text-anchor="" x="757.452431114967" y="125.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >libc.so.1`_UTF8_mbrtowc</text>
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`_UTF8_mbrtowc (6,203 samples, 12.81%)')" onmouseout="c()">
-<title>libc.so.1`_UTF8_mbrtowc (6,203 samples, 12.81%)</title><rect x="496.6" y="133" width="151.2" height="25.0" fill="rgb(253,112,8)" rx="2" ry="2" />
-<text text-anchor="" x="499.609245259636" y="151.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >libc.so.1`..</text>
-</g>
-<g class="func_g" onmouseover="s('grep`check_multibyte_string (39,754 samples, 82.11%)')" onmouseout="c()">
-<title>grep`check_multibyte_string (39,754 samples, 82.11%)</title><rect x="90.0" y="159" width="968.9" height="25.0" fill="rgb(240,175,19)" rx="2" ry="2" />
-<text text-anchor="" x="92.9925641343413" y="177.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >grep`check_multibyte_string</text>
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`memchr (16 samples, 0.03%)')" onmouseout="c()">
-<title>libc.so.1`memchr (16 samples, 0.03%)</title><rect x="1189.6" y="185" width="0.4" height="25.0" fill="rgb(207,120,19)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`cancel_safe_mutex_unlock (14 samples, 0.03%)')" onmouseout="c()">
-<title>libc.so.1`cancel_safe_mutex_unlock (14 samples, 0.03%)</title><rect x="1188.6" y="107" width="0.4" height="25.0" fill="rgb(237,117,40)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('grep`EGexecute (48,285 samples, 99.73%)')" onmouseout="c()">
-<title>grep`EGexecute (48,285 samples, 99.73%)</title><rect x="10.2" y="185" width="1176.9" height="25.0" fill="rgb(216,167,19)" rx="2" ry="2" />
-<text text-anchor="" x="13.2193580369315" y="203.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >grep`EGexecute</text>
-</g>
-<g class="func_g" onmouseover="s('grep`xmalloc (20 samples, 0.04%)')" onmouseout="c()">
-<title>grep`xmalloc (20 samples, 0.04%)</title><rect x="496.1" y="133" width="0.5" height="25.0" fill="rgb(228,71,39)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('grep`_start (48,414 samples, 100.00%)')" onmouseout="c()">
-<title>grep`_start (48,414 samples, 100.00%)</title><rect x="10.0" y="289" width="1180.0" height="25.0" fill="rgb(214,93,6)" rx="2" ry="2" />
-<text text-anchor="" x="13" y="307.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >grep`_start</text>
-</g>
-<g class="func_g" onmouseover="s('grep`main (48,414 samples, 100.00%)')" onmouseout="c()">
-<title>grep`main (48,414 samples, 100.00%)</title><rect x="10.0" y="263" width="1180.0" height="25.0" fill="rgb(209,14,25)" rx="2" ry="2" />
-<text text-anchor="" x="13" y="281.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >grep`main</text>
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`mbrtowc (5,022 samples, 10.37%)')" onmouseout="c()">
-<title>libc.so.1`mbrtowc (5,022 samples, 10.37%)</title><rect x="1060.4" y="159" width="122.4" height="25.0" fill="rgb(230,64,35)" rx="2" ry="2" />
-<text text-anchor="" x="1063.38377328872" y="177.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >libc.so...</text>
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`memset (172 samples, 0.36%)')" onmouseout="c()">
-<title>libc.so.1`memset (172 samples, 0.36%)</title><rect x="1182.8" y="159" width="4.2" height="25.0" fill="rgb(248,62,12)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`mutex_lock_impl (14 samples, 0.03%)')" onmouseout="c()">
-<title>libc.so.1`mutex_lock_impl (14 samples, 0.03%)</title><rect x="1059.6" y="107" width="0.3" height="25.0" fill="rgb(212,104,50)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`mutex_lock (14 samples, 0.03%)')" onmouseout="c()">
-<title>libc.so.1`mutex_lock (14 samples, 0.03%)</title><rect x="1059.6" y="133" width="0.3" height="25.0" fill="rgb(247,174,51)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`mutex_unlock (14 samples, 0.03%)')" onmouseout="c()">
-<title>libc.so.1`mutex_unlock (14 samples, 0.03%)</title><rect x="1060.0" y="133" width="0.3" height="25.0" fill="rgb(205,164,17)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`_malloc_unlocked (7 samples, 0.01%)')" onmouseout="c()">
-<title>libc.so.1`_malloc_unlocked (7 samples, 0.01%)</title><rect x="496.2" y="81" width="0.2" height="25.0" fill="rgb(207,199,33)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`malloc (18 samples, 0.04%)')" onmouseout="c()">
-<title>libc.so.1`malloc (18 samples, 0.04%)</title><rect x="496.2" y="107" width="0.4" height="25.0" fill="rgb(216,19,43)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`free (46 samples, 0.10%)')" onmouseout="c()">
-<title>libc.so.1`free (46 samples, 0.10%)</title><rect x="1059.3" y="159" width="1.1" height="25.0" fill="rgb(240,100,43)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('all (48,414 samples, 100%)')" onmouseout="c()">
-<title>all (48,414 samples, 100%)</title><rect x="10.0" y="315" width="1180.0" height="25.0" fill="rgb(238,40,25)" rx="2" ry="2" />
-<text text-anchor="" x="13" y="333.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  ></text>
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`cancel_active (8 samples, 0.02%)')" onmouseout="c()">
-<title>libc.so.1`cancel_active (8 samples, 0.02%)</title><rect x="1188.7" y="81" width="0.2" height="25.0" fill="rgb(219,223,39)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`free (7 samples, 0.01%)')" onmouseout="c()">
-<title>libc.so.1`free (7 samples, 0.01%)</title><rect x="1189.4" y="185" width="0.2" height="25.0" fill="rgb(228,8,23)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`mbrtowc (16,865 samples, 34.83%)')" onmouseout="c()">
-<title>libc.so.1`mbrtowc (16,865 samples, 34.83%)</title><rect x="647.9" y="133" width="411.0" height="25.0" fill="rgb(243,167,13)" rx="2" ry="2" />
-<text text-anchor="" x="650.868798281489" y="151.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >libc.so.1`mbrtowc</text>
-</g>
-<g class="func_g" onmouseover="s('grep`0x4067d0 (3,243 samples, 6.70%)')" onmouseout="c()">
-<title>grep`0x4067d0 (3,243 samples, 6.70%)</title><rect x="11.0" y="159" width="79.0" height="25.0" fill="rgb(230,205,25)" rx="2" ry="2" />
-<text text-anchor="" x="13.9505514933697" y="177.5" font-size="20" font-family="Verdana" fill="rgb(0,0,0)"  >grep..</text>
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`mutex_unlock (8 samples, 0.02%)')" onmouseout="c()">
-<title>libc.so.1`mutex_unlock (8 samples, 0.02%)</title><rect x="496.4" y="81" width="0.2" height="25.0" fill="rgb(222,228,28)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('grep`prtext (94 samples, 0.19%)')" onmouseout="c()">
-<title>grep`prtext (94 samples, 0.19%)</title><rect x="1187.1" y="185" width="2.3" height="25.0" fill="rgb(232,213,40)" rx="2" ry="2" />
-</g>
-<g class="func_g" onmouseover="s('libc.so.1`fwrite (60 samples, 0.12%)')" onmouseout="c()">
-<title>libc.so.1`fwrite (60 samples, 0.12%)</title><rect x="1187.8" y="133" width="1.5" height="25.0" fill="rgb(250,133,23)" rx="2" ry="2" />
-</g>
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