ethercflow

package main

import (
        "context"
        "flag"
        "log"
        "strings"
        "time"

        pb "github.com/ethercflow/injuredfs/pb"

ethercflow

gcc -o failure-gen failure-gen.c
mv failure-gen.service failure-gen-notify-email@.service /ets/systemd/system # change someone@pingcap.com to your email name
systemctl daemon-reload
mkdir -p /opt/onfailure-test/aaa
mv failure-gen /opt/onfailure-test
systemctl start failure-gen.service
cd /opt/onfailure-test

when run

ethercflow

#!/usr/bin/env python

from __future__ import print_function
from bcc import BPF
from time import sleep, strftime
from datetime import datetime
import sys

bpf_source = """
#include <uapi/linux/ptrace.h>

ethercflow

#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>

#define N 100000
#define ORDER 2 * 2 * 2
static char *mems[N_MEM];

static int
frag_init(void)

ethercflow

export PATH=$PATH:/opt/linuxki
cd /dev/shm
runki -M -X -G ${tgid} -R -e all -d 120  # (default 20s) 
kiall -r
cd local/xxx/
vim kiwait.xxx.txt # 分析等待事件

perf stat -e minor-faults
perf record -e minor-faults -c 1 -ag

ethercflow

# 1. create a sub group
create -t <tuid>:<tgid> -g cpuset:<gname>
# 2. get nodes and cores of each node
numactl --hardware
# 3. bind one node's cpu to the sub group
cgset -r cpuset.cpus='n1c1, n1c2,...' <gname>
# 4. can limit mem node too (opt)
cgset -r cpuset.mems='0' <gname>

ethercflow

#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

struct A {
        void *(*add)(void *out, void *a, void *b);
};

ethercflow

struct task_struct {
	volatile long state;	/* -1 unrunnable, 0 runnable, >0 stopped */
	void *stack;
	atomic_t usage;
	unsigned int flags;	/* per process flags, defined below */
	unsigned int ptrace;

#ifdef CONFIG_SMP
	struct llist_node wake_entry;
	int on_cpu;

ethercflow

/*
 *  debugfs.h - a tiny little debug file system
 *
 *  Copyright (C) 2004 Greg Kroah-Hartman <greg@kroah.com>
 *  Copyright (C) 2004 IBM Inc.
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License version
 *	2 as published by the Free Software Foundation.
 *

ethercflow

#!/usr/bin/env bash

source /opt/intel/vtune_amplifier_2018.3.0.558279/amplxe-vars.sh
amplxe-cl -c memory-access -knob analyze-mem-objects=true -knob mem-object-size-min-thres=1024  -run-pass-thru=--no-altstack -target-pid $1