Kiva's questions

我想在我的服务器中更新我的 php 5。目前，我使用的是 php 5.2.0，所以我想将其更新为 php 5.2.4（不是 php 5.3）。我试图这样做：

aptitude update
aptitude upgrade

更新了 63 个数据包，但没有更新 5.0 中的 php

请问如何更新我的php？

以下是 David 在另一篇文章中询问的命令输出：

aptitude search php5
p   libapache-mod-php5              - server-side, HTML-embedded scripting langu
i A libapache2-mod-php5             - server-side, HTML-embedded scripting langu
i   php5                            - server-side, HTML-embedded scripting langu
p   php5-apache2-mod-bt             - PHP bindings for mod_bt
p   php5-auth-pam                   - A PHP5 extension for PAM authentication
i   php5-cgi                        - server-side, HTML-embedded scripting langu
p   php5-clamavlib                  - PHP ClamAV Lib - ClamAV Interface for PHP5
p   php5-cli                        - command-line interpreter for the php5 scri
i A php5-common                     - Common files for packages built from the p
i   php5-curl                       - CURL module for php5
p   php5-dev                        - Files for PHP5 module development
i A php5-gd                         - GD module for php5
p   php5-idn                        - PHP api for the IDNA library
p   php5-imagick                    - ImageMagick module for php5
p   php5-imap                       - IMAP module for php5
p   php5-interbase                  - interbase/firebird module for php5
p   php5-json                       - JSON serialiser for PHP5
p   php5-ldap                       - LDAP module for php5
p   php5-mapscript                  - module for php5-cgi to use mapserver
p   php5-maxdb                      - PHP extension to access MaxDB databases fo
i A php5-mcrypt                     - MCrypt module for php5
p   php5-memcache                   - memcache extension module for PHP5
p   php5-mhash                      - MHASH module for php5
p   php5-ming                       - Ming module for php5
i A php5-mysql                      - MySQL module for php5
p   php5-odbc                       - ODBC module for php5
p   php5-pgsql                      - PostgreSQL module for php5
p   php5-ps                         - ps module for PHP 5
p   php5-pspell                     - pspell module for php5
p   php5-radius                     - PECL radius module for PHP 5
p   php5-recode                     - recode module for php5
p   php5-snmp                       - SNMP module for php5
p   php5-sqlite                     - SQLite module for php5
p   php5-sqlite3                    - SQLite3 module for php5
p   php5-sqlrelay                   - SQL Relay PHP API
p   php5-suhosin                    - advanced protection module for php5
p   php5-sybase                     - Sybase / MS SQL Server module for php5
p   php5-tidy                       - tidy module for php5
p   php5-uuid                       - OSSP uuid module for php5
p   php5-xapian                     - Xapian search engine interface for PHP5
p   php5-xcache                     - Fast, stable PHP opcode cacher
p   php5-xmlrpc                     - XML-RPC module for php5
p   php5-xsl                        - XSL module for php5



aptitude show php5 | grep Version
Version : 5.2.0-8+etch13


aptitude show php5-cgi | grep Version
Version : 5.2.0-8+etch13



php5 --version
-bash: php5: command not found


php-cgi --version
PHP 5.2.0-8+etch13 (cgi-fcgi) (built: Oct  2 2008 08:21:17)
Copyright (c) 1997-2006 The PHP Group
Zend Engine v2.2.0, Copyright (c) 1998-2006 Zend Technologies

我在我的服务器上监视我的磁盘，因为我的网站很慢。

这是我的磁盘统计信息：

读取：0.29 请求/秒 写入：50.19 请求/秒

我不明白为什么我的磁盘上每秒有 50 个书面请求。

我怎样才能找到写得像猪的程序？命令行 ？程序 ？

更新：服务器是一个 debian etch。该磁盘位于 SAN 中，因此它是一个虚拟磁盘。

我的数据库是 mysql，我的网站是 ruby​​ on rails。

我有 1 GB 内存。

下面是 free 命令的结果：

free -m   
             total       used       free     shared    buffers     cached
Mem:           995        769        225          0         46        421
-/+ buffers/cache:        301        693
Swap:         1906          0       1906

我不认为是交换问题。我不明白 ：（

好的，经过几次搜索，我发现：

Postfix 在我的 syslog 文件中按秒添加 10 个条目：s，日志是这样的：

Feb 16 10:51:41 myhost postfix/local[24480]: 333902F1CE: to=<ovh@mail.monsite.com>, orig_to=<root>, relay=local, delay=73, delays=42/25/0/6.1, dsn=5.1.1, status=bounced (unknown user: "ovh")
Feb 16 10:51:41 myhost postfix/qmgr[3753]: 528032F1D3: removed
Feb 16 10:51:41 myhost postfix/cleanup[24624]: CEBAD2F1D4: message-id=<20100216095120.CEBAD2F1D4@mail.monsite.com>
Feb 16 10:51:41 myhost postfix/bounce[24575]: B8EE32F19B: sender non-delivery notification: DDE2D2F1DE
Feb 16 10:51:41 myhost postfix/qmgr[3753]: DDE2D2F1DE: from=<>, size=2798, nrcpt=1 (queue active)
Feb 16 10:51:41 myhost postfix/cleanup[25934]: 659B02F1D3: message-id=<20100216095138.659B02F1D3@mail.monsite.com>
Feb 16 10:51:41 myhost postfix/qmgr[3753]: B8EE32F19B: removed
Feb 16 10:51:41 myhost postfix/local[24948]: DDE2D2F1DE: to=<ovh@mail.monsite.com>, orig_to=<root@mail.monsite.com>, relay=local, delay=15, delays=12/2/0/1.3, dsn=5.1.1, status=bounced (unknown user: "ovh")
Feb 16 10:51:41 myhost postfix/bounce[24726]: 333902F1CE: sender non-delivery notification: 659B02F1D3
Feb 16 10:51:41 myhost postfix/qmgr[3753]: CEBAD2F1D4: from=<root@mail.monsite.com>, size=983, nrcpt=1 (queue active)
Feb 16 10:51:41 myhost postfix/qmgr[3753]: 333902F1CE: removed
Feb 16 10:51:41 myhost postfix/qmgr[3753]: 659B02F1D3: from=<>, size=2792, nrcpt=1 (queue active)
Feb 16 10:51:41 myhost postfix/qmgr[3753]: DDE2D2F1DE: removed
Feb 16 10:51:47 myhost postfix/local[24480]: 659B02F1D3: to=<ovh@mail.monsite.com>, orig_to=<root@mail.monsite.com>, relay=local, delay=8.7, delays=3.3/0/0/5.4, dsn=5.1.1, status=bounced (unknown user: "ovh")
Feb 16 10:51:47 myhost postfix/local[25978]: CEBAD2F1D4: to=<ovh@mail.monsite.com>, orig_to=<root>, relay=local, delay=32, delays=27/0/0/5.4, dsn=5.1.1, status=bounced (unknown user: "ovh")
Feb 16 10:51:47 myhost postfix/qmgr[3753]: 659B02F1D3: removed
Feb 16 10:51:47 myhost postfix/cleanup[24906]: 1A7512F19B: message-id=<20100216095147.1A7512F19B@mail.monsite.com>
Feb 16 10:51:53 myhost postfix/bounce[24726]: CEBAD2F1D4: sender non-delivery notification: 1A7512F19B
Feb 16 10:51:53 myhost postfix/qmgr[3753]: CEBAD2F1D4: removed
Feb 16 10:51:53 myhost postfix/qmgr[3753]: 1A7512F19B: from=<>, size=2798, nrcpt=1 (queue active)
Feb 16 10:51:59 myhost postfix/local[24948]: 1A7512F19B: to=<ovh@mail.monsite.com>, orig_to=<root@mail.monsite.com>, relay=local, delay=12, delays=6.2/0/0/6.1, dsn=5.1.1, status=bounced (unknown user: "ovh")
Feb 16 10:51:59 myhost postfix/qmgr[3753]: 1A7512F19B: removed
Feb 16 10:52:11 myhost /USR/SBIN/CRON[25984]: (root) CMD (/usr/local/rtm/bin/rtm 18 > /dev/null 2> /dev/null)
Feb 16 10:52:11 myhost /USR/SBIN/CRON[25985]: (root) CMD (wget -O /dev/null http://monsite.com/cron/desactive_arene)
Feb 16 10:52:16 myhost /USR/SBIN/CRON[25987]: (root) CMD (run-parts /usr/local/oco/bin/60sec >/dev/null 2>/dev/null)
Feb 16 10:52:22 myhost /USR/SBIN/CRON[25988]: (root) CMD (run-parts /usr/local/oco/bin/120sec >/dev/null 2>/dev/null)
Feb 16 10:52:39 myhost postfix/pickup[23034]: 8A8CC2F1BD: uid=0 from=<root>
Feb 16 10:52:44 myhost postfix/cleanup[24624]: 8A8CC2F1BD: message-id=<20100216095205.8A8CC2F1BD@mail.monsite.com>
Feb 16 10:52:44 myhost postfix/qmgr[3753]: 8A8CC2F1BD: from=<root@mail.monsite.com>, size=983, nrcpt=1 (queue active)
Feb 16 10:52:44 myhost postfix/local[24480]: 8A8CC2F1BD: to=<ovh@mail.monsite.com>, orig_to=<root>, relay=local, delay=21, delays=15/0/0/6.1, dsn=5.1.1, status=bounced (unknown user: "ovh")

在这里，我不明白发生了什么。

我的网站服务器很慢，我联系了我的托管公司。这家公司要求我执行这个命令行：

hdparm -tT /dev/sda

结果在这里：

/dev/sda:
 Timing cached reads:   1112 MB in  2.00 seconds = 555.55 MB/sec
 Timing buffered disk reads:    4 MB in  4.80 seconds = 854.16 kB/sec

我不明白这是什么意思，我读了那个人，但你能清楚地解释一下这个结果是什么意思吗？

非常感谢。