Hi, I have been using a url_rewrite helper on Squid Cache: Version 3.2.5, Ubuntu 12.04 and it's been working fine. I'm not trying to use the exact same script on Squid Cache: Version 3.4.0.2, CentOS 6 and having issues. squid.conf line: url_rewrite_program /etc/squid/url_rewrite.pl url_rewrite.pl file: #!/usr/bin/perl -p BEGIN { $|=1; } s%^http://xxx.yyy/api%https://zzz.aaa/api% && next; s%^http://xxx.yyy/api%https://zzz.aaa/api% && next; ## On the new server, squid runs at 100% CPU usage when I try to enable it and sites don't load. I have given the url_rewrite script 755 permissions as on the other server and it works fine when run in the terminal. Any ideas? -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-3-4-0-2-url-rewrite-perl-script-100-CPU-tp4665089.html Sent from the Squid - Users mailing list archive at Nabble.com.