试图卸载zarafa
邮件服务器。
我yum list installed
用来查看已经安装的包。
之后我使用 yum erase zarafa*
它拿起所有的包裹,但返回:
Error in PREUN scriptlet in rpm package zarafa-dagent
Error in PREUN scriptlet in rpm package zarafa-gateway
Error in PREUN scriptlet in rpm package zarafa-monitor
Error in PREUN scriptlet in rpm package zarafa-server
Error in PREUN scriptlet in rpm package zarafa-spooler
Error in PREUN scriptlet in rpm package zarafa-ical
zarafa-ical-7.1.9-1.el6.i686 was supposed to be removed but is not!
Verifying : zarafa-ical-7.1.9-1.el6.i686 1/6
zarafa-spooler-7.1.9-1.el6.i686 was supposed to be removed …
Run Code Online (Sandbox Code Playgroud) 对提供的图像进行测试时 apache
,我注意到在创建新会话时:
Waiting (TTFB)
: 1.09s
Initial connection + SSL handshake
:370ms
DNS Lookup
:165ms
但随后使用持久连接如下:
Waiting (TTFB)
: 187ms
Content Download
:4ms
因此,我们发现TTFB
新连接的非持久性平均要长 5 倍。这是正常的吗?
附带问题:为什么只有在有新连接时才进行新的 DNS 查找?
/etc/init.d/clamd start
错误:
[FAILED] log gives ERROR: daemonize() failed: Cannot Allocate Memory
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在 Cent OS
total Mem: 510876kb
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/etc/init.d/clamd start
在 /var/log/clamav
ERROR: daemonize() failed: Cannot Allocate Memory
?
这是一个可以解决的问题吗?
我以为Clamd
只需要20 - 40 mb
说 Memory Free: 273844k
strace 的结果:
waitpid(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], 0) = 1658
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
waitpid(-1, 0xbff84a2c, WNOHANG) = -1 ECHILD (No child processes)
sigreturn() = ? (mask now …
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