1. Drupal 超速指引
How to Speed Up Drupal
2011 Drupalcamp Taipei
Jimmy Huang email: Jimmy at netivism.com.tw
blog: jimmyhub.net

2. 高效能 Drupal 策略
• 小比大好，少比多好，瘦比胖好
• 不該出現的不要出現
• 不需裝的不要裝
• 不需即時運算的就快取
• 記憶體比資料庫好
• 資料庫比檔案好

3. 如何擬定效能改善方針
• 瓶頸在哪裡？
– 慢再哪裡？ CPU / 記憶體 / 流量？
– 哪個頁面發生這個問題？
– 慢再何時？
• 檢測瓶頸
– CPU : 確認是 Apache 還是 MySQL
– 記憶體 : 確認沒有用到 Swap 磁區
– 流量 : 確認連線場所網路順暢
– 頁面 : 確認某些頁面特別久

4. 如何擬定效能改善方針 ( 續 )
• 哪個網頁特別龜？
• 登入時瀏覽和登出時瀏覽的差異？
• 租用哪家 Server ？有權限做 Server 調整？
• 每日造訪頁數（ awstats / google analytics ） ?
• 很多人看？還是很多爬蟲？

5. 如何擬定效能改善方針 ( 續 )
• 安裝模組
ex. memcache, boost, csstidy …
• 調整 Server
ex. Apache MaxClients 數值
ex. Mod Deflate
• 調整 Drupal 設定
– 根據檢測出來的頁面，調整對應設定
• 調整程式碼
– 非不得已，自行開發模組，再調整程式碼

6. 在 Drupal 如何檢測效能
• Devel 觀察記憶體 / 頁面產生速度
• Devel 蒐集 Database 使用的狀況
• 分析 Query 問題、來源
• 調整出問題之 Views / Panels / 程式碼

7. 在 Drupal 如何檢測效能 ( 續 )
garland, system, block, dblog, filter, menu, node, taxonomy,
user, content, date, date_api, date_repeat, date_timezone,
number, optionwidgets, text, feeds, feeds_ui,
feeds_xpathparser, ctools, job_scheduler, devel, views,
views_ui

8. 在 Drupal 如何檢測效能 ( 續 )

10. 檢測效能 – Apache / MySQL

11. 檢測效能 – 流量問題

12. 檢測效能 – 流量問題

13. 實戰 - css / javascript aggregration
Before…

14. 實戰 - css / javascript aggregration
After…

15. 實戰 - html / css / javascript 壓縮
Before…

16. 實戰 - html / css / javascript 壓縮
(續)
After…

17. 實戰 - html / css / javascript 壓縮
(續)
use: http://www.seoconsultants.com/tools/compression

18. 實戰 - html / css / javascript 壓縮
(續)
• Apache mod_deflate 開啟
• Page Compression 開啟
• 第三方模組
– Advanced CSS/JS Aggregation
– CSS Gzip
– CSSTidy

19. 實戰 – 快取技術
• Drupal 快取方式
– Menu , Form, Page, Variables, Content,
Language …
• 快取技術
– Drupal 內建整頁 HTML 快取
– Views / Panels 模組快取
– Boost 模組

20. Drupal 頁面快
取

21. Views 快取

22. Panel 快取

23. Boost 快取

24. 實戰 – 記憶體快取
• 為何把快取放進記憶體？
– 建立 Database 連線緩慢
– MySQL 的效能不足
– Database 新增、刪除的動作比記憶體慢
• 如何做？
– 安裝 memcached
– 安裝 php-memcache
– 安裝 drupal memcache

25. 實戰 – 記憶體快取

26. # ab -c 100 -t 30 http://netivism.com.tw/
Document Path: /
Document Length: 33246 bytes
Before…
Concurrency Level: 100
Time taken for tests: 30.085 seconds
Complete requests: 130
Failed requests: 0
Write errors: 0
Total transferred: 4992040 bytes
HTML transferred: 4920408 bytes
Requests per second: 4.32 [#/sec] (mean)
Time per request: 23142.220 [ms] (mean)
Time per request: 231.422 [ms] (mean, across
all concurrent requests)
Transfer rate: 162.04 [Kbytes/sec] received

27. # ab -c 100 -t 30 http://netivism.com.tw/
Document Path: /
Document Length: 33246 bytes
After
Concurrency Level: 100
Memcache:
Time taken for tests: 30.021 seconds
Complete requests: 432
Failed requests: 0
Write errors: 0
Total transferred: 14976120 bytes
HTML transferred: 14761224 bytes
Requests per second: 14.39 [#/sec] (mean)
Time per request: 6949.333 [ms] (mean)
Time per request: 69.493 [ms] (mean, across
all concurrent requests)
Transfer rate: 487.16 [Kbytes/sec] received

28. # ab -c 100 -t 30 http://netivism.com.tw/
Document Path: /
Document Length: 33329 bytes
After
Concurrency Level: 100
Boost:
Time taken for tests: 30.009 seconds
Complete requests: 5113
Failed requests: 0
Write errors: 0
Total transferred: 172425088 bytes
HTML transferred: 170310941 bytes
Requests per second: 170.38 [#/sec] (mean)
Time per request: 586.922 [ms] (mean)
Time per request: 5.869 [ms] (mean, across
all concurrent requests)
Transfer rate: 5611.05 [Kbytes/sec] received

29. Before After

30. 參考資源
• Web resource
– Drupal效能相關模組 (drupal.org)
– Drupal效能群組 (group.drupal.org)
– Drupal Performance Handbook (drupal.org)
– Drupal Performance Tuning (2bits)
• Book
– Drupal 6 Performance Tips (PACKT)
– Drupal Performance and Scalability (Lullabot)

31. photo list
http://www.flickr.com/photos/17612257@N00/4639794109/
http://gala4th.blogspot.com/2009_09_01_archive.html
http://www.flickr.com/photos/runforcover/3791930953/
http://www.flickr.com/photos/cyberslayer/5874026128/
http://www.flickr.com/photos/marcovdz/4520986339/
http://www.flickr.com/photos/bwjones/4227870410/
http://www.flickr.com/photos/adcuz/3104028585/
http://www.flickr.com/photos/antphotos/3469245178/
http://www.flickr.com/photos/kino/487539637/in/photostream/
http://www.flickr.com/photos/nathey4/5713434731/
http://bumpshack.com/2010/08/06/sara-rue-incredible-weight-loss-
before-after-photos/