pt-query-digest解析MySQL Binlog日志文件

时间:2022-03-11 18:43:19
解析binlog工具百家争鸣,最常用的是mysqlbinlog,各有千秋,对于DBA,唯手熟尔罢了
然而,有工具的地方就有江湖,故本文无意争论工具属优属劣,免得引起不成熟的争端

仅介绍pt-query-digest其实也是能用来解析Binlog,友好、可读性强、便于快速诊断故障


如果直接:
[root@ld88 mysqldata]# pt-query-digest --type binlog mysql-bin88.000189
将无法解析,需先做如下转换
[root@ld88 mysqldata]# mysqlbinlog mysql-bin88.000189 > mysql-bin88.000189.sql


看两个例子,以下为了排版,对输出做了大量裁减-_-!

㈠ 指定时间窗口

[root@ld88 mysqldata]# pt-query-digest --type binlog --since "2013-11-06 20:55:00" --until "2013-11-06 21:00:00" mysql-bin88.000189.sqlmysql-bin88.000189.sql:  17% 02:22 remain
mysql-bin88.000189.sql: 33% 01:58 remain
mysql-bin88.000189.sql: 47% 01:39 remain
mysql-bin88.000189.sql: 62% 01:12 remain
mysql-bin88.000189.sql: 83% 00:28 remain

# 160.9s user time, 8.8s system time, 23.62M rss, 150.04M vsz
# Current date: Thu Nov 7 15:37:19 2013
# Hostname: ld88
# Files: mysql-bin88.000189.sql
# Overall: 914 total, 31 unique, 3.06 QPS, 41.19kx concurrency ___________
# Time range: 2013-11-06 20:55:00 to 20:59:59
# Attribute total min max avg 95% stddev median
# ============ ======= ======= ======= ======= ======= ======= =======
# Exec time 12316866s 13349s 13639s 13476s 13443s 145s 13443s
# Query size 442.35k 6 35.33k 434.29 1012.63 1.88k 143.84
# error code 0 0 0 0 0 0 0

# Profile
# Rank Query ID Response time Calls R/Call V/M Item
# ==== ================== ================== ===== ========== ===== ======
# 1 0x972882477A1D4A3F 3739234.0000 30.4% 277 13499.0397 1.54 UPDATE tbBlogArticleStat?
# 2 0xF5B3ADEC45DB5266 1099848.0000 8.9% 82 13412.7805 1.39 UPDATE tbBlogArticleStat?
# 3 0xC05BF1F3A8344559 1099848.0000 8.9% 82 13412.7805 1.39 UPDATE tbBlogArticleChart
# 4 0xA85CE0CC3154666E 1024921.0000 8.3% 76 13485.8026 1.26 UPDATE tbBlogTag
# 5 0x7C12B8C66B369B73 822705.0000 6.7% 61 13486.9672 1.26 INSERT tbBlogTagArticle
# 6 0xE8059EB28F9F68AA 752337.0000 6.1% 56 13434.5893 1.39 INSERT tbBlogArticleVote
# 7 0x01FCF322381E8B7E 404606.0000 3.3% 30 13486.8667 1.28 INSERT tbBlogArticleDayClick
# 8 0xD5C00F71DB944F6C 404606.0000 3.3% 30 13486.8667 1.28 UPDATE tbBlogSubArticleStatist
# 9 0x6EFA3A2E4EC6B202 404606.0000 3.3% 30 13486.8667 1.28 UPDATE tbBlogMemberSort
# 10 0xE14AB2C787449950 404606.0000 3.3% 30 13486.8667 1.28 UPDATE tbBlogMemberStat
# 11 0x34764E44BE970CDD 404606.0000 3.3% 30 13486.8667 1.28 INSERT tbBlogArticleChart
# 12 0xCFEB2F244234CE05 404605.0000 3.3% 30 13486.8333 1.28 INSERT tbBlogArticleStat?
# 13 0xCDB381C90AF965D4 404604.0000 3.3% 30 13486.8000 1.28 INSERT tbBlogArticle?
# 14 0xF7D29C9021590977 162011.0000 1.3% 12 13500.9167 1.30 UPDATE tbBlogArticleChart
# 15 0xFBA7BD32B7694172 134777.0000 1.1% 10 13477.7000 1.23 INSERT tbBlogTag
# 16 0xB2317C2DE1E87251 108184.0000 0.9% 8 13523.0000 0.00 UPDATE tbBlogMemberStat
# MISC 0xMISC 540762.0000 4.4% 40 13519.0500 0.0 <14 ITEMS>

# Query 1: 0.93 QPS, 12.59kx concurrency, ID 0x972882477A1D4A3F at byte 218115626
# This item is included in the report because it matches --limit.
# Scores: V/M = 1.54
# Time range: 2013-11-06 20:55:00 to 20:59:57
# Attribute pct total min max avg 95% stddev median
# ============ === ======= ======= ======= ======= ======= ======= =======
# Count 30 277
# Exec time 30 3739234s 13351s 13639s 13499s 13443s 144s 13443s
# Query size 10 44.59k 144 201 164.84 192.76 17.53 166.51
# error code 0 0 0 0 0 0 0 0
# Query_time distribution
# 1us
# 10us
# 100us
# 1ms
# 10ms
# 100ms
# 1s
# 10s+ ################################################################
# Tables
# SHOW TABLE STATUS LIKE 'tbBlogArticleStat0022'\G
# SHOW CREATE TABLE `tbBlogArticleStat0022`\G
update tbBlogArticleStat0022 set PrevArticleID='0',PrevArticleAppearTime='',NextArticleID='35810718',NextArticleAppearTime='2011-03-14 19:59:01' where ArticleID='35605800'\G
# Converted for EXPLAIN
# EXPLAIN /*!50100 PARTITIONS*/
select PrevArticleID='0',PrevArticleAppearTime='',NextArticleID='35810718',NextArticleAppearTime='2011-03-14 19:59:01' from tbBlogArticleStat0022 where ArticleID='35605800'\G

㈡ 只输出Profile

[root@ld88 mysqldata]# pt-query-digest --type binlog --group-by fingerprint --limit "100%" --order-by "Query_time:cnt" --output report --report-format profile mysql-bin88.000189.sqlmysql-bin88.000189.sql:  13% 03:07 remainmysql-bin88.000189.sql:  25% 02:53 remainmysql-bin88.000189.sql:  38% 02:24 remainmysql-bin88.000189.sql:  49% 02:01 remainmysql-bin88.000189.sql:  60% 01:36 remainmysql-bin88.000189.sql:  72% 01:07 remainmysql-bin88.000189.sql:  84% 00:39 remainmysql-bin88.000189.sql:  96% 00:08 remain# Profile# Rank Query ID           Response time        Calls  R/Call     V/M   Ite# ==== ================== ==================== ====== ========== ===== ===#    1 0x48CC1A2B52A30509 817766362.0000 18.1% 127173  6430.3458 39... UPDATE tbBlogArticleChart#    2 0x76509399554D3FEF 741481163.0000 16.4% 113494  6533.2191 39... UPDATE tbBlogArticleDayClick#    3 0xE0E6B927C2F5000A 726418316.0000 16.1% 111138  6536.1831 38... UPDATE tbBlogMemberDayClick#    4 0xB0F33119C913EB04 726410137.0000 16.1% 111135  6536.2859 38... UPDATE tbBlogAccessStat#    5 0xC05BF1F3A8344559 222658013.0000  4.9%  42971  5181.5879 38... UPDATE tbBlogArticleChart#    6 0xF5B3ADEC45DB5266 222656784.0000  4.9%  42971  5181.5593 38... UPDATE tbBlogArticleStat?#    7 0x972882477A1D4A3F 146520312.0000  3.2%  25960  5644.0798 52... UPDATE tbBlogArticleStat?#    8 0xE8059EB28F9F68AA 131750313.0000  2.9%  25876  5091.6028 41... INSERT tbBlogArticleVote#    9 0xDD9D4A59398D4FEC  76279669.0000  1.7%  13678  5576.8145 43... UPDATE tbBlogArticleDayClick#   10 0x28D0E7634EB42A4F  85322783.0000  1.9%  13449  6344.1730 41... REPLACE tbBlogVisitor#   11 0x017F3BABF98C01C3  84711387.0000  1.9%  12946  6543.4410 40... REPLACE tbBlogArticleVisitor#   12 0xDBF77B093FF5DCAD  52730403.0000  1.2%   9920  5315.5648 44... INSERT tbBlogAccessStat#   13 0xE66806F5A93FDF12  52731149.0000  1.2%   9919  5316.1759 44... UPDATE tbBlogMemberDayClick#   14 0xE225E24322E8C40A  61140268.0000  1.4%   9648  6337.0925 42... REPLACE tbBlogVisitorTo#   15 0x29CF2F2AB36D901F  49727504.0000  1.1%   7768  6401.5839 41... REPLACE tbUserVisitorArticle#   16 0xA85CE0CC3154666E  38643377.0000  0.9%   7325  5275.5463 55... UPDATE tbBlogTag#   17 0x7C12B8C66B369B73  31598603.0000  0.7%   6524  4843.4401 58... INSERT tbBlogTagArticle#   18 0x1EFDEE6D63DED573    103492.0000  0.0%   6134    16.8719  0.51 DELETE tbBlogArticleChart#   19 0x01FCF322381E8B7E  19873958.0000  0.4%   4856  4092.6602 63... INSERT tbBlogArticleDayClick#   20 0xCDB381C90AF965D4  19871072.0000  0.4%   4856  4092.0659 63... INSERT tbBlogArticle?#   21 0xCFEB2F244234CE05  19870602.0000  0.4%   4856  4091.9691 63... INSERT tbBlogArticleStat?


参考资料
http://www.percona.com/doc/percona-toolkit/2.2/pt-query-digest.html


By 迦夜

2013-11-7

Good Luck