\u6709\u65f6\u5019\uff0c\u8fd0\u884c Nginx\u3001PHP-CGI(php-fpm) Web\u670d\u52a1\u7684 Linux \u670d\u52a1\u5668\uff0c\u7a81\u7136\u7cfb\u7edf\u8d1f\u8f7d\u4e0a\u5347\uff0c\u4f7f\u7528 top \u547d\u4ee4\u67e5\u770b\uff0c\u5f88\u591a php-cgi \u8fdb\u7a0b CPU \u4f7f\u7528\u7387\u63a5\u8fd1100%\u3002\u540e\u6765\uff0c\u6211\u901a\u8fc7\u8ddf\u8e2a\u53d1\u73b0\uff0c\u8fd9\u7c7b\u60c5\u51b5\u7684\u51fa\u73b0\uff0c\u8ddf PHP \u7684 file_get_contents() \u51fd\u6570\u6709\u7740\u5bc6\u5207\u7684\u5173\u7cfb\u3002<\/p>\n
\u4eec\u77e5\u9053\uff0c\u5728 php.ini \u4e2d\uff0c\u6709\u4e00\u4e2a\u53c2\u6570 max_execution_time \u53ef\u4ee5\u8bbe\u7f6e PHP \u811a\u672c\u7684\u6700\u5927\u6267\u884c\u65f6\u95f4\uff0c\u4f46\u662f\uff0c\u5728 php-cgi(php-fpm) \u4e2d\uff0c\u8be5\u53c2\u6570\u4e0d\u4f1a\u8d77\u6548\u3002\u771f\u6b63\u80fd\u591f\u63a7\u5236 PHP \u811a\u672c\u6700\u5927\u6267\u884c\u65f6\u95f4\u7684\u662f php-fpm.conf \u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u4ee5\u4e0b\u53c2\u6570\uff1a The timeout (in seconds) for serving a single request after which the worker process will be terminated \u9ed8\u8ba4\u503c\u4e3a 0 \u79d2\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0cPHP \u811a\u672c\u4f1a\u4e00\u76f4\u6267\u884c\u4e0b\u53bb\u3002\u8fd9\u6837\uff0c\u5f53\u6240\u6709\u7684 php-cgi \u8fdb\u7a0b\u90fd\u5361\u5728 file_get_contents() \u51fd\u6570\u65f6\uff0c\u8fd9\u53f0 Nginx+PHP \u7684 WebServer \u5df2\u7ecf\u65e0\u6cd5\u518d\u5904\u7406\u65b0\u7684 PHP \u8bf7\u6c42\u4e86\uff0cNginx \u5c06\u7ed9\u7528\u6237\u8fd4\u56de\u201c502 Bad Gateway\u201d\u3002\u4fee\u6539\u8be5\u53c2\u6570\uff0c\u8bbe\u7f6e\u4e00\u4e2a PHP \u811a\u672c\u6700\u5927\u6267\u884c\u65f6\u95f4\u662f\u5fc5\u8981\u7684\uff0c\u4f46\u662f\uff0c\u6cbb\u6807\u4e0d\u6cbb\u672c\u3002\u4f8b\u5982\u6539\u6210 \u8981\u505a\u5230\u5f7b\u5e95\u89e3\u51b3\uff0c\u53ea\u80fd\u8ba9 PHP \u7a0b\u5e8f\u5458\u4eec\u6539\u6389\u76f4\u63a5\u4f7f\u7528 file_get_contents(“http:\/\/example.com\/”) \u7684\u4e60\u60ef\uff0c\u800c\u662f\u7a0d\u5fae\u4fee\u6539\u4e00\u4e0b\uff0c\u52a0\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u7528\u4ee5\u4e0b\u65b9\u5f0f\u6765\u5b9e\u73b0 HTTP GET \u8bf7\u6c42\u3002\u8981\u662f\u89c9\u5f97\u9ebb\u70e6\uff0c\u53ef\u4ee5\u81ea\u884c\u5c06\u4ee5\u4e0b\u4ee3\u7801\u5c01\u88c5\u6210\u4e00\u4e2a\u51fd\u6570\u3002 array( \u5f53\u7136\uff0c\u5bfc\u81f4 php-cgi \u8fdb\u7a0b CPU 100% \u7684\u539f\u56e0\u4e0d\u53ea\u6709\u8fd9\u4e00\u79cd\uff0c\u90a3\u4e48\uff0c\u600e\u4e48\u786e\u5b9a\u662f file_get_contents() \u51fd\u6570\u5bfc\u81f4\u7684\u5462\uff1f<\/p>\n \u9996\u5148\uff0c\u4f7f\u7528 top \u547d\u4ee4\u67e5\u770b CPU \u4f7f\u7528\u7387\u8f83\u9ad8\u7684 php-cgi \u8fdb\u7a0b\u3002<\/p>\n top – 10:34:18 up 724 days, 21:01, 3 users, load average: 17.86, 11.16, 7.69 PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND \u627e\u5176\u4e2d\u4e00\u4e2a CPU 100% \u7684 php-cgi \u8fdb\u7a0b\u7684 PID\uff0c\u7528\u4ee5\u4e0b\u547d\u4ee4\u8ddf\u8e2a\u4e00\u4e0b\uff1a<\/p>\n strace -p 10747<\/p>\n \u5982\u679c\u5c4f\u5e55\u663e\u793a\uff1a<\/p>\n select(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0}) \u90a3\u4e48\uff0c\u5c31\u53ef\u4ee5\u786e\u5b9a\u662f file_get_contents() \u5bfc\u81f4\u7684\u95ee\u9898\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\nThe timeout (in seconds) for serving a single request after which the worker process will be terminated Should be used when ‘max_execution_time’ ini option does not stop script execution for some reason ‘0s’ means ‘off’
\n1
\n2
\n3
\n4<\/p>\n
\nShould be used when ‘max_execution_time’ ini option does not stop script execution for some reason
\n‘0s’ means ‘off’
\n
\n array( ‘timeout’ => 1 \/\/\u8bbe\u7f6e\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u79d2 ) ) ); file_get_contents(“http:\/\/example.com\/”, 0, $ctx); ?>
\n1
\n2
\n3
\n4
\n5
\n6
\n7
\n8
\n9<\/p>\n
\n ‘timeout’ => 1 \/\/\u8bbe\u7f6e\u4e00\u4e2a\u8d85\u65f6\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u79d2
\n )
\n )
\n);
\nfile_get_contents(“http:\/\/example.com\/”, 0, $ctx);
\n?><\/p>\n
\nTasks: 561 total, 15 running, 546 sleeping, 0 stopped, 0 zombie
\nCpu(s): 5.9%us, 4.2%sy, 0.0%ni, 89.4%id, 0.2%wa, 0.0%hi, 0.2%si, 0.0%st
\nMem: 8100996k total, 4320108k used, 3780888k free, 772572k buffers
\nSwap: 8193108k total, 50776k used, 8142332k free, 412088k cached<\/p>\n
\n10747 www 18 0 360m 22m 12m R 100.6 0.3 0:02.60 php-cgi
\n10709 www 16 0 359m 28m 17m R 96.8 0.4 0:11.34 php-cgi
\n10745 www 18 0 360m 24m 14m R 94.8 0.3 0:39.51 php-cgi
\n10707 www 18 0 360m 25m 14m S 77.4 0.3 0:33.48 php-cgi
\n10782 www 20 0 360m 26m 15m R 75.5 0.3 0:10.93 php-cgi
\n10708 www 25 0 360m 22m 12m R 69.7 0.3 0:45.16 php-cgi
\n10683 www 25 0 362m 28m 15m R 54.2 0.4 0:32.65 php-cgi
\n10711 www 25 0 360m 25m 15m R 52.2 0.3 0:44.25 php-cgi
\n10688 www 25 0 359m 25m 15m R 38.7 0.3 0:10.44 php-cgi
\n10719 www 25 0 360m 26m 16m R 7.7 0.3 0:40.59 php-cgi<\/p>\n
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)
\nselect(7, [6], [6], [], {15, 0}) = 1 (out [6], left {15, 0})
\npoll([{fd=6, events=POLLIN}], 1, 0) = 0 (Timeout)<\/p>\n