siddontang

package bigetc

import (
	"database/sql"
	"time"

	"github.com/c4pt0r/log"
	_ "github.com/go-sql-driver/mysql"
)

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ROOT=$PWD/build
rm -rf $ROOT
mkdir -p $ROOT

cd $ROOT

# Go
if which go >/dev/null; then
    echo "go installed, skip"
else

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Using dtrace to profile your program on Mac OSX.

Prepare

wget https://github.com/brendangregg/FlameGraph/archive/master.zip
unzip master.zip 
mv FlameGraph-master FlameGraph

wget https://raw.githubusercontent.com/siddontang/gprof2dot/master/gprof2dot.py

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go run tikv-assembly.go -f "port 20160" -i lo0
2018/12/29 20:17:17 Starting capture on interface "lo0"
2018/12/29 20:17:17 reading in packets
2018/12/29 20:17:26 127.0.0.1:64989 -> 127.0.0.1:20160 /tikvpb.Tikv/KvPrewrite context:<region_id:2 region_epoch:<conf_ver:1 version:1 > peer:<id:3 store_id:1 > > mutations:<key:"usertable:a" value:"\010\000\002\0020" > primary_lock:"usertable:a" start_version:405297128206237697 lock_ttl:3000
2018/12/29 20:17:26 127.0.0.1:20160 -> 127.0.0.1:64989 /tikvpb.Tikv/KvPrewrite
2018/12/29 20:17:26 127.0.0.1:64995 -> 127.0.0.1:20160 /tikvpb.Tikv/KvCommit context:<region_id:2 region_epoch:<conf_ver:1 version:1 > peer:<id:3 store_id:1 > > start_version:405297128206237697 keys:"usertable:a" commit_version:405297128206237698
2018/12/29 20:17:26 127.0.0.1:20160 -> 127.0.0.1:64995 /tikvpb.Tikv/KvCommit
2018/12/29 20:17:29 127.0.0.1:64999 -> 127.0.0.1:20160 /tikvpb.Tikv/KvGet context:<region_id:2 region_epoch:<conf_ver:1 version:1 > peer:<id:3 store_id:1 > > key:"usertable:a" version:4

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#!/usr/bin/python
# @lint-avoid-python-3-compatibility-imports
#
# tcptop    Summarize TCP send/recv throughput by host.
#           For Linux, uses BCC, eBPF. Embedded C.
#
# USAGE: tcptop [-h] [-C] [-S] [-p PID] [interval [count]]
#
# This uses dynamic tracing of kernel functions, and will need to be updated
# to match kernel changes.

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#!/usr/bin/python
#
# memleak   Trace and display outstanding allocations to detect
#           memory leaks in user-mode processes and the kernel.
#
# USAGE: memleak [-h] [-p PID] [-t] [-a] [-o OLDER] [-c COMMAND]
#                [--combined-only] [-s SAMPLE_RATE] [-T TOP] [-z MIN_SIZE]
#                [-Z MAX_SIZE] [-O OBJ]
#                [interval] [count]
#

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extern crate backtrace;
extern crate libc;

use backtrace::BytesOrWideString;
use std::alloc::{System, GlobalAlloc, Layout};
use std::sync::atomic::{AtomicUsize, Ordering::SeqCst};

struct Counter;

static ALLOCATED: AtomicUsize = AtomicUsize::new(0);

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package main

import (
	"bufio"
	"bytes"
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"net/http"

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package main

import (
	"bytes"
	"encoding/gob"
	"reflect"
)

func RemoteOnline(id uint64) (uint64, string) {
	return id, "abc"

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Preparation

Assume you have already deployed PD, TiKV, Prometheus and Grafana.

PD: 127.0.0.1:2379 TiKV: 127.0.0.1:20181, 127.0.0.1:20182, 127.0.0.1:20183 Prometheus: 127.0.0.1:9090 Grafana: 127.0.0.1:3000

Prometheus Config