在配置squid的时候出现
squid:ERROR:Could not send signal 0 to process 11472:(3) no such process错误
配置信息如下：

Create the external ACL session handler. Avoid editing this line, if possible.

If you have a high-load environment you may increase the children= setting, but I found 10 to be fine in most cases.

external_acl_type session ttl=1 negative_ttl=0 children=10 concurrency=0 %SRC %PROTO %DST %PORT %PATH /etc/iac/squid_handler.php
acl session external session

If the handler says no-access, this is where you block them.

http_access deny !session

But instead of a boring squid error page, redirect to the IAC WebGUI

deny_info http://192.168.0.1/iac/denied.php?url=%s&from=acl session

The allow-everything rule. This should be the semi-last ACL in the config.

注释掉上面三条配置信息后squid能够正常运行。我是按照一个软件的安装要求来配置squid的，之前并没有接触过squid，我想问这个问题出现的原因在哪里？还有就是在错误提示中process后面的数字一直在增大，提示一次错误增长一次，从原来的2000多一直增长到现在的10000多了，这是什么原因呢？请求大神指点！