Dicas e Truques de Otimização de Websites Python

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1 Dicas e Truques de Otimização de Websites Python

2 Dicas e Truques de Otimização de Websites Python Fabiano Weimar dos Santos [Xiru] FISL Porto Alegre - RS

3 O que iremos ver? Na PyCon Brasil II (26) foram apresentados testes de performance com o Plone versão 2.1 Dessa vez, iremos testar o Plone versão 3..6 Dicas de CacheFu Agumas dicas para Django também...

4 Zope Padrão xiru:~ root# ab -c 5 -n 1 Concurrency Level: 5 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: 2937 bytes HTML transferred: 2714 bytes Requests per second: [#/sec] (mean) [ms] (mean) 5.11 [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

5 Plone Padrão xiru:~ root# ab -c 5 -n 1 Concurrency Level: 5 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: 2596 bytes HTML transferred: 2318 bytes Requests per second: 7.4 [#/sec] (mean) [ms] (mean) [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

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9 Instalando Squid xiru:~ xiru$ ab -c 5 -n 1 Concurrency Level: 5 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: 224 bytes HTML transferred: bytes Requests per second: [#/sec] (mean) [ms] (mean) [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

10 Instalando CacheFu xiru:~ xiru$ ab -c 5 -n 1 Concurrency Level: 5 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: bytes HTML transferred: bytes Requests per second: [#/sec] (mean) [ms] (mean) [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

11 Habilitando CacheFu xiru:~ xiru$ ab -c 5 -n 1 Concurrency Level: 5 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: 2249 bytes HTML transferred: bytes Requests per second: [#/sec] (mean) [ms] (mean) [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

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14 Regra ContentTypes xiru:~ xiru$ ab -c 5 -n 1 Concurrency Level: 5 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: 2267 bytes HTML transferred: bytes Requests per second: [#/sec] (mean) [ms] (mean) [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

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18 ulimit xiru:squid-2.6.stable19 root# ulimit -a core file size (blocks, -c) data seg size (kbytes, -d) 6144 file size (blocks, -f) unlimited max locked memory (kbytes, -l) unlimited max memory size (kbytes, -m) unlimited open files pipe size stack size cpu time max user processes virtual memory (-n) 496 (512 bytes, -p) 1 (kbytes, -s) 8192 (seconds, -t) unlimited (-u) 266 (kbytes, -v) unlimited

19 ulimit xiru:logs root# grep descri cache.log 28/4/18 11:43:22 With 256 file descriptors available 28/4/18 11:59:35 With 256 file descriptors available 28/4/18 12:15:47 WARNING! Your cache is running out of filedescriptors 28/4/18 12:21:22 WARNING! Your cache is running out of filedescriptors 28/4/18 12:24:53 With 496 file descriptors available

20 25 Conexões xiru:logs root# ab -c 25 -n 1 Concurrency Level: 25 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: bytes HTML transferred: bytes Requests per second: 64.6 [#/sec] (mean) [ms] (mean) [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

21 5 Conexões xiru:logs root# ab -c 5 -n 1 Concurrency Level: 5 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: bytes HTML transferred: bytes Requests per second: [#/sec] (mean) [ms] (mean) [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

22 75 Conexões xiru:logs root# ab -c 75 -n 1 Concurrency Level: 75 Time taken for tests: seconds Complete requests: 1 Failed requests: Write errors: Total transferred: bytes HTML transferred: bytes Requests per second: [#/sec] (mean) [ms] (mean) 1.79 [ms] (mean, across all concurrent requests) Transfer rate: [Kbytes/sec] received

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24 Dicas e Truques Invista seu tempo em debug de headers HTTP Nenhuma aplicação dinâmica terá performance sem cache Cache compartilhado sempre será mais rápido do que cache no browser (mas isso nem sempre é possível) Use extensões do firefox para auxiliar no seu trabalho Web Developer, Firebug YSlow (developer.yahoo.com/yslow)

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