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Lars's questions

Martin Hope
Lars
Asked: 2015-07-05 02:17:43 +0800 CST
  • 3

我在一个非常常见的 CentOS 5.11 与 Apache 2 和 PHP 5.3.3 上为我的妹妹运行一个小型 Wordpress 博客。

最近，我们发现当她尝试使用 Wordpress 自己的界面更新或安装任何东西时，一切都停止了，我发现了这个：

PHP Fatal error:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 20 bytes) in /var/www/foobar/wp-admin/includes/file.php on line 159, referer: http://foobar.com/wp-admin/update-core.php?action=do-core-upgrade

在搜索了一下之后，最简单的事情似乎就是稍微提高内存限制，但无论我将它提高到多少，基本上它都需要更长的时间才能达到这个屋顶。

以下是一些摘录：

512M

PHP Fatal error:  Allowed memory size of 536870912 bytes exhausted (tried to allocate 261900 bytes) in /var/www/foobar/wp-admin/includes/file.php on line 159, referer: http://foobar.com/wp-admin/update-core.php?action=do-core-upgrade

1024M

PHP Fatal error:  Allowed memory size of 1073741824 bytes exhausted (tried to allocate 261900 bytes) in /var/www/foobar/wp-admin/includes/file.php on line 159, referer: http://foobar.com/wp-admin/update-core.php?action=do-core-upgrade

这一切都是使用...配置的

memory_limit = 1024M

在 /etc/php.ini 以及...

define('WP_MEMORY_LIMIT', '1024M');
            } else {
                    define('WP_MEMORY_LIMIT', '1024M');
            }
    }

    if ( ! defined( 'WP_MAX_MEMORY_LIMIT' ) ) {
            define( 'WP_MAX_MEMORY_LIMIT', '1024M' );
    }

在 ~/wp-includes/default-constants.php 中。

这显然使我相信某处存在必须解决的内存泄漏，但是当所有东西都是预先打包的 Wordpress 东西时，我将如何找到它呢？以下是按下更新按钮时顶部 ^M的一些摘录：

前

Mem:   1034656k total,   235836k used,   798820k free,     6388k buffers
Swap:  2048248k total,   107940k used,  1940308k free,   139156k cached

PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
23649 apache    19   0  160m  22m  15m S  0.0  2.2   0:07.06 httpd

尽管

Mem:   1034656k total,  1020396k used,    14260k free,       60k buffers
Swap:  2048248k total,   152484k used,  1895764k free,    26880k cached

PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
23645 apache    21   0 1079m 906m  16m R 75.5 89.7   0:06.95 httpd

WordPress 版本 4.2

MySQL 5.1

阿帕奇 2.2.22

已安装插件：Hello Dolly 1.6 和 Akismet 3.1.1

这是strace -f -r的输出，正是它停止的地方：

29638 0.000134 writev(16, [{"28\r\n", 4}, {"<p>Enabling Maintenance mode&#82"..., 40}, {"\r\n", 2}], 3) = 46 29638 0.000122 time(NULL) = 1436025429 29638 0.000060 getcwd("/var/www/foobar/wp-admin"..., 4096) = 32 29638 0.000064 time(NULL) = 1436025429 29638 0.000040 open("/tmp/php9Ldioo", O_RDWR|O_CREAT|O_EXCL, 0600) = 19 29638 0.000061 getpeername(18, {sa_family=AF_INET, sin_port=htons(21), sin_addr=inet_addr("127.0.0.1")}, [16]) = 0 29638 0.000068 poll([{fd=18, events=POLLOUT}], 1, 240000) = 1 ([{fd=18, revents=POLLOUT}]) 29638 0.000038 send(18, "PASV\r\n", 6, 0) = 6 29638 0.000078 poll([{fd=18, events=POLLIN|POLLERR|POLLHUP}], 1, 240000) = 1 ([{fd=18, revents=POLLIN}]) 29638 0.000119 recv(18, "227 Entering Passive Mode (127,0"..., 4096, 0) = 45 29638 0.000048 socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 20 29638 0.000029 fcntl64(20, F_GETFL) = 0x2 (flags O_RDWR) 29638 0.000025 fcntl64(20, F_SETFL, O_RDWR|O_NONBLOCK) = 0 29638 0.000026 connect(20, {sa_family=AF_INET, sin_port=htons(8721), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EINPROGRESS (Operation now in progress) 29638 0.000060 poll([{fd=20, events=POLLIN|POLLOUT|POLLERR|POLLHUP}], 1, 240000) = 1 ([{fd=20, revents=POLLOUT}]) 29638 0.000039 getsockopt(20, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 29638 0.000028 fcntl64(20, F_SETFL, O_RDWR) = 0 29638 0.000024 poll([{fd=18, events=POLLOUT}], 1, 240000) = 1 ([{fd=18, revents=POLLOUT}]) 29638 0.000036 send(18, "NLST /.maintenance\r\n", 20, 0) = 20 29638 0.000053 poll([{fd=18, events=POLLIN|POLLERR|POLLHUP}], 1, 240000) = 1 ([{fd=18, revents=POLLIN}]) 29638 0.000187 recv(18, "150 Here comes the directory lis"..., 4096, 0) = 39 29638 0.000111 poll([{fd=20, events=POLLIN|POLLERR|POLLHUP}], 1, 240000) = 1 ([{fd=20, revents=POLLIN}]) 29638 0.000037 recv(20, "", 4096, 0) = 0 29638 0.000024 close(20) = 0 29638 0.000038 lseek(19, 0, SEEK_SET) = 0 29638 0.000026 read(19, "", 8192) = 0 29638 0.000031 close(19) = 0 29638 0.000023 unlink("/tmp/php9Ldioo") = 0 29638 0.000042 poll([{fd=18, events=POLLIN|POLLERR|POLLHUP}], 1, 240000) = 1 ([{fd=18, revents=POLLIN}]) 29638 0.000037 recv(18, "226 Directory send OK.\r\n", 4096, 0) = 24 29638 0.000063 poll([{fd=18, events=POLLOUT}], 1, 240000) = 1 ([{fd=18, revents=POLLOUT}]) 29638 0.000038 send(18, "CWD /.maintenance/\r\n", 20, 0) = 20 29638 0.000035 poll([{fd=18, events=POLLIN|POLLERR|POLLHUP}], 1, 240000) = 1 ([{fd=18, revents=POLLIN}]) 29638 0.000067 recv(18, "550 Failed to change directory.\r"..., 4096, 0) = 33 29638 0.000050 poll([{fd=18, events=POLLOUT}], 1, 240000) = 1 ([{fd=18, revents=POLLOUT}]) 29638 0.000037 send(18, "PWD\r\n", 5, 0) = 5 29638 0.000052 poll([{fd=18, events=POLLIN|POLLERR|POLLHUP}], 1, 240000) = 1 ([{fd=18, revents=POLLIN}]) 29638 0.000035 recv(18, "257 \"/\"\r\n", 4096, 0) = 9 29638 0.000047 poll([{fd=18, events=POLLOUT}], 1, 240000) = 1 ([{fd=18, revents=POLLOUT}]) 29638 0.000036 send(18, "RMD /.maintenance\r\n", 19, 0) = 19 29638 0.000059 poll([{fd=18, events=POLLIN|POLLERR|POLLHUP}], 1, 240000) = 1 ([{fd=18, revents=POLLIN}]) 29638 0.000035 recv(18, "550 Remove directory operation f"..., 4096, 0) = 40 29638 0.002773 brk(0x929f000) = 0x929f000 29638 0.001533 brk(0x92df000) = 0x92df000 29638 0.001396 brk(0x931f000) = 0x931f000 29638 0.001436 brk(0x935f000) = 0x935f000 29638 0.001488 brk(0x939f000) = 0x939f000 29638 0.001460 brk(0x93df000) = 0x93df000 29638 0.001388 brk(0x941f000) = 0x941f000 29638 0.001452 brk(0x945f000) = 0x945f000 29638 0.000772 brk(0x949f000) = 0x949f000 29638 0.000668 brk(0x94df000) = 0x94df000 29638 0.001326 brk(0x951f000) = 0x951f000 29638 0.001320 brk(0x955f000) = 0x955f000 29638 0.001423 brk(0x959f000) = 0x959f000 29638 0.001508 brk(0x95df000) = 0x95df000 29638 0.001410 brk(0x961f000) = 0x961f000 29638 0.000280 brk(0x965f000) = 0x965f000 /29638 0.001073 brk(0x969f000) = 0x969f000 29638 0.001342 brk(0x96df000) = 0x96df000 29638 0.001341 brk(0x971f000) = 0x971f000 29638 0.001389 brk(0x975f000) = 0x975f000 29638 0.001385 brk(0x979f000) = 0x979f000 29638 0.001172 brk(0x97df000) = 0x97df000

apache-2.2
Martin Hope
Lars
Asked: 2012-06-14 01:04:27 +0800 CST
  • 1

今天我们在我们的办公室运行 Mikrotik 1100AHx2，我们在不同子网上有四个楼层。现在我正在研究使用接入点建立一个跨越这些楼层的无线网络，但所有这些都连接到同一个路由器端口，因此它与网络的其余部分完全隔离，但仍然使用来自每个楼层的交换机的电源.

所以我的问题是，你会用什么样的硬件来做这个，之前有人做过这样的设置吗？

这个比较难解释，所以给大家画了个图方便大家理解，大家有什么问题可以在下面发帖，如果是serverfault发错地方了，抱歉，请移步到任何你想去的地方。

最好的问候拉斯 无线设置

router wifi mikrotik access-point