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Kenichi Masuda
April 19, 2012
Technology
1
5.6k
Recommendation for using your own tools
This materials for #mysqlcasual 3
Kenichi Masuda
April 19, 2012
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Transcript
ಓ۩Λຏ͘͜ͱͷεεϝ 2012/04/19 #mysqlcasual 3 @masudaK 20124݄20༵ۚ
ࣗݾհ • @masudaK • ͷձࣾͰOperation Engineer • େنେ͖ • χʔϋΠ͖
• ৄ͘͠ #૿ాνϟϥ͍ 20124݄20༵ۚ
Ͱɺຊ 20124݄20༵ۚ
ಓ۩ʹΘ͞Εͯ ͍͚ͳ͍ 20124݄20༵ۚ
ຊ࣭௫Ή 20124݄20༵ۚ
ͦͷͱ͓ΓͰ͟͝Δ 20124݄20༵ۚ
ବ՛ࢠ՛ࢠʂʂ 20124݄20༵ۚ
Α͋͘Δޫܠ 20124݄20༵ۚ
Q) ͦͷઃఆ ࡌϝϞϦ͑ͯͳ͍ʁ 20124݄20༵ۚ
A) όοϑΝʹ ࡌͬͨΒऴΘΓ·͢ (ΩϦο 20124݄20༵ۚ
Q) όοϑΝ ͲΕ͘Β͍ΘΕͯΔʁ 20124݄20༵ۚ
A) ͔Γ·ͤΜ (ΩϦο 20124݄20༵ۚ
Q) n࣌n͔Βn·ͰΔ ΫΤϦੳ͠ͱ͍ͯʔ 20124݄20༵ۚ
A) ͑ͬ(ΧδϡΞϧ෩ʹ 20124݄20༵ۚ
ࣄલʹ͋Δ ศརͳͷ͓͏ͣ ʢΧδϡΞϧʹʣ 20124݄20༵ۚ
ϛεݮΒͦ͏ͣ ʢΧδϡΞϧʹʣ 20124݄20༵ۚ
ࠓ͔ΒՄೳͳݶΓ ͝հ ʢΧδϡΞϧʹʣ 20124݄20༵ۚ
ઃఆฤ 20124݄20༵ۚ
1. mymemcheck 20124݄20༵ۚ
•࠷େ༻ϝϞϦݟੵΓΛ ͝ఏग़ •http://dsas.blog.klab.org/ archives/50860867.html 20124݄20༵ۚ
ͬͯΔਓʔ ϊ 20124݄20༵ۚ
• ͜Μͳײ͡ʢৄ͘͠Σϒ(ry • process heap = • innodb_buffer_pool + key_buffer
+ • max_connections * (sort_buffer + read_buffer + read_rnd_buffer) + max_connections * stack_size 20124݄20༵ۚ
2GϚγϯͰେྔઃఆͯ͠Έͨ 20124݄20༵ۚ
2G > 7.940 [G] ... LIMIT OVER!! 20124݄20༵ۚ
2. MySQLTuner 20124݄20༵ۚ
•https://github.com/ rackerhacker/MySQLTuner- perl •Performance Metrics͍ͬͯ͏ ͷ͕͋Δ 20124݄20༵ۚ
ͬͯΔਓʔ ϊ 20124݄20༵ۚ
• ͜Μͳ͜ͱڭ͑ͯ͘ΕΔ • query_cache_size (>= 8M) • thread_cache_size (start at
4) • innodb_buffer_pool_size (>= 807M) • ͱ͔ͱ͔ 20124݄20༵ۚ
ோΊͯղੳฤ 20124݄20༵ۚ
• EXPLAIN • EXPLAIN • ADD INDEX • FORCE INDEX
• ΫΤϦվળ͝ఏҊ • جຊதͷجຊ 20124݄20༵ۚ
3. tcpdump͔Βͷʔ 20124݄20༵ۚ
4. pt-query-digest 20124݄20༵ۚ
@mikeda͞Μ͕ հͯ͘͠ΕΔͣ 20124݄20༵ۚ
5. PROFILING 20124݄20༵ۚ
• SET PROFILE • ͦͷ࣮ߦεϨουʹͷΈ༗ޮ • Ͳ͜ʹ͔͔࣌ؒͬͯΔ͔ͱ͔ • ύοͱݟͰ͔ΓͮΒ͍࣌ศར 20124݄20༵ۚ
ͬͯΔਓʔ ϊ 20124݄20༵ۚ
mysql> SET profiling=1; mysql> దͳΫΤϦൃߦ 20124݄20༵ۚ
mysql> SHOW PROFILE; +--------------------+----------+ | Status | Duration | +--------------------+----------+
| starting | 0.000087 | | Opening tables | 0.000063 | | System lock | 0.000009 | | init | 0.000009 | | optimizing | 0.000004 | | statistics | 0.000009 | | preparing | 0.000010 | | executing | 0.002878 | | Sending data | 0.000292 | | end | 0.000010 | | query end | 0.000003 | | closing tables | 0.000002 | | removing tmp table | 0.000008 | | closing tables | 0.000003 | | freeing items | 0.003564 | | logging slow query | 0.000009 | | cleaning up | 0.000003 | 20124݄20༵ۚ
mysql> SHOW PROFILE SOURCE; +--------------------+----------+-----------------------+---------------+-------------+ | Status | Duration |
Source_function | Source_file | Source_line | +--------------------+----------+-----------------------+---------------+-------------+ | starting | 0.000087 | NULL | NULL | NULL | | Opening tables | 0.000063 | open_tables | sql_base.cc | 4837 | | System lock | 0.000009 | mysql_lock_tables | lock.cc | 299 | | init | 0.000009 | mysql_select | sql_select.cc | 2554 | | optimizing | 0.000004 | optimize | sql_select.cc | 863 | | statistics | 0.000009 | optimize | sql_select.cc | 1054 | | preparing | 0.000010 | optimize | sql_select.cc | 1076 | | executing | 0.002878 | exec | sql_select.cc | 1823 | | Sending data | 0.000292 | exec | sql_select.cc | 2365 | | end | 0.000010 | mysql_select | sql_select.cc | 2590 | StatusΛ֨ೲͯ͠ΔՕॴͷߦ·Ͱग़ͯ͘͠ΕΔ ͜͜·ͰඞཁͳΫΤϦ΄ͱΜͲͳ͍ͱࢥ(ry 20124݄20༵ۚ
6. MySlowTranCapture 20124݄20༵ۚ
• ୯ൃΫΤϦૣ͍ͷʹɺτϥϯβΫ γϣϯͩͱ͍ͷͱ͔ݕͯ͘͠Ε Δ • https://github.com/yoshinorim/ MySlowTranCapture 20124݄20༵ۚ
ͬͯΔਓʔ ϊ 20124݄20༵ۚ
দ৴ຊߪೖ͢Δ͔͠ͳ͍ɻ 20124݄20༵ۚ
ָ͍ͨ͠ฤ 20124݄20༵ۚ
7. TPC-C 20124݄20༵ۚ
ͬͯΔਓʔ ϊ 20124݄20༵ۚ
ΧδϡΞϧා͍ 20124݄20༵ۚ
• σʔλ࡞ΔͷΊΜͲ͍ • tpcc_load localhost tpcc1000 root "" 100 •
./tpcc_start -h localhost -d tpcc1000 -u root -w 10 - c 2 -r 10 -l 30 • Sͷਓ͚ɻhͬͱϋʔυɻ 20124݄20༵ۚ
8. Facebook, online schema change tool 20124݄20༵ۚ
ͬͯΔਓʔ ϊ 20124݄20༵ۚ
• http://www.facebook.com/notes/mysql-at- facebook/online-schema-change-for-mysql/ 430801045932 • ୭͔ϓϩμΫτͰ(ry 20124݄20༵ۚ
ใऩूฤ 20124݄20༵ۚ
9. MySQL Performance BlogΛѪಡ 20124݄20༵ۚ
Ѫಡͯ͠Δਓʔ ϊ 20124݄20༵ۚ
20124݄20༵ۚ
γϡϫϧπͷসإ ͍ 20124݄20༵ۚ
10. Baron Schwartz ͯ͠ΈΔ 20124݄20༵ۚ
20124݄20༵ۚ
11. ΧϯϑΝϨϯε ࢿྉΛړΔ 20124݄20༵ۚ
20124݄20༵ۚ
20124݄20༵ۚ
ڳ 20124݄20༵ۚ
·ͩ·ͩ৭ʑ 20124݄20༵ۚ
• ಓ۩͕શͯͰͳ͍ • ͚Ͳɺղܾͷࢳޱͱͯ͠ • ϓϩμΫτͰ͑Δͷ(ry • ΞτϓοτΛੋඇ ऴΘΓʹ 20124݄20༵ۚ
࠷ޙʹ 20124݄20༵ۚ
αΠόʔΤʔδΣϯτ Ұॹʹಇ͍ͯ͘ΕΔਓ ืूத 20124݄20༵ۚ
͝ਗ਼ௌ ͋Γ͕ͱ͏͍͟͝·ͨ͠ 20124݄20༵ۚ