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// You may want to first disable transparent huge pages:
//
//    echo never | sudo tee /sys/kernel/mm/transparent_hugepage/enabled

package main

import (
	"flag"
	"fmt"
	"io/ioutil"

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// Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"image/color"
	"math"
	"os"

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# Read gcpacertrace log from stdin and plot pacing.

import sys
import subprocess

gp = subprocess.Popen(["gnuplot", "-persist", "-e", """
set xrange [0:2];
set yrange [0:1];
set xlabel "Heap ratio (h)";
set ylabel "GC CPU (u_a)";

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try:
    from gdb.unwinder import Unwinder, register_unwinder
except ImportError:
    Unwinder = None

if Unwinder is not None:
    class FrameID(object):
        def __init__(self, sp, pc):
            self.sp = sp
            self.pc = pc

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// Requires https://go-review.googlesource.com/c/38320

package popcnt

import (
	"math/bits"
	"testing"
)

var sink interface{}

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import gdb

_Gdead = 6

class SliceValue:
    """Wrapper for slice values."""

    def __init__(self, val):
        self.val = val

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import gdb
import re
import tempfile
import os
import subprocess
import shutil
import struct

NOTE_HDR = struct.Struct("III")
USER_REGS = struct.Struct(27*"Q")

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# Compute the object graph of a Go heap and find the path from a root
# to a target address.

import gdb
import collections

class SliceValue:
    """Wrapper for slice values."""

    def __init__(self, val):

aclements

Proposal: Eliminate STW stack re-scanning

Author(s): Austin Clements, Rick Hudson

Last updated: 2016-10-18

Discussion at https://golang.org/issue/17503.

Abstract

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