{"action":"created","issue":{"url":"https://api.github.com/repos/websharks/zencache/issues/391","labels_url":"https://api.github.com/repos/websharks/zencache/issues/391/labels{/name}","comments_url":"https://api.github.com/repos/websharks/zencache/issues/391/comments","events_url":"https://api.github.com/repos/websharks/zencache/issues/391/events","html_url":"https://github.com/websharks/zencache/issues/391","id":53350735,"number":391,"title":"Processes are Frequently Waiting for a Mutex Lock (LiteSpeed)","user":{"login":"raamdev","id":53005,"avatar_url":"https://avatars.githubusercontent.com/u/53005?v=3","gravatar_id":"","url":"https://api.github.com/users/raamdev","html_url":"https://github.com/raamdev","followers_url":"https://api.github.com/users/raamdev/followers","following_url":"https://api.github.com/users/raamdev/following{/other_user}","gists_url":"https://api.github.com/users/raamdev/gists{/gist_id}","starred_url":"https://api.github.com/users/raamdev/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/raamdev/subscriptions","organizations_url":"https://api.github.com/users/raamdev/orgs","repos_url":"https://api.github.com/users/raamdev/repos","events_url":"https://api.github.com/users/raamdev/events{/privacy}","received_events_url":"https://api.github.com/users/raamdev/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/websharks/zencache/labels/needs%20testing","name":"needs testing","color":"eb6420"},{"url":"https://api.github.com/repos/websharks/zencache/labels/pro","name":"pro","color":"009800"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-01-04T22:15:16Z","updated_at":"2015-08-21T04:56:37Z","closed_at":null,"body":"The following bug report was opened by @LittleBastard77 in websharks/html-compressor#51: \r\n\r\n---\r\n\r\n> I am using the latest version of quick cache pro to date and wordpress 4.\r\n> \r\n> I enabled HTML compression last night with default options. Some tests showed improvement in speed. However this afternoon the site was extremely slow to the point that I got alerts that it was offline.\r\n> \r\n> I opened a ticket with support and they sent me this. After struggling renaming the quick cache plugin directory back and forth so I could disconnect users and get the speed needed to avoid a timeout I was able to disable the HTML compression and all got back to normal again.\r\n> \r\n> The supportsperson sent me the data below (I changed some names on the data for safety). If you need more detailed information, please, be very specific so I can relay the request to support or even get the log files from cpanel myself. \r\n> \r\n> Thanks.\r\n\r\n```\r\nroot@host [/usr/local/apache/domlogs]# w\r\n11:01:45 up 13 days, 11:31, 1 user, load average: 7.66, 6.68, 5.65\r\n\r\nThis is due to PHP executing for EXAMPLE.com:\r\n\r\nnobody 5907 1.8 0.3 104888 44112 ? Sl 09:09 2:04 \\_ litespeed (lshttpd)\r\ncpanelaccount 13645 10.4 0.7 213984 86244 ? S 10:55 0:38 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13673 18.2 0.7 214448 86376 ? S 10:56 0:55 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13762 11.5 0.7 214380 86712 ? S 10:58 0:24 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13765 4.3 0.6 211824 85596 ? S 10:58 0:09 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13840 13.3 0.7 212608 86448 ? S 10:59 0:20 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13842 29.1 0.7 217224 88568 ? S 10:59 0:42 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13858 6.7 0.7 213144 86688 ? S 10:59 0:07 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13924 14.9 0.7 212888 86628 ? S 11:00 0:14 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13989 7.7 0.7 214176 88428 ? S 11:00 0:07 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13990 46.6 0.6 213432 85488 ? S 11:00 0:42 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13991 9.8 0.7 215216 88588 ? S 11:00 0:08 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13992 8.0 0.7 217140 91368 ? S 11:00 0:06 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 13994 17.7 0.7 213912 88148 ? S 11:00 0:14 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14009 9.7 0.7 214888 87916 ? S 11:00 0:06 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14014 12.4 0.7 221348 94932 ? S 11:00 0:07 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14016 5.0 0.7 213660 87896 ? S 11:00 0:02 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14020 13.3 0.8 234968 108008 ? R 11:00 0:06 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14028 5.1 0.7 212940 86828 ? S 11:01 0:02 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14263 4.9 0.6 212100 85848 ? S 11:01 0:01 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14264 14.2 0.7 212988 86320 ? S 11:01 0:04 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14267 12.8 0.6 211908 85600 ? S 11:01 0:02 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14320 11.5 0.6 211356 84840 ? S 11:01 0:01 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14325 15.6 0.6 212176 84996 ? S 11:01 0:00 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14329 42.0 0.6 212644 85996 ? S 11:01 0:01 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\ncpanelaccount 14330 45.6 0.6 211400 85016 ? S 11:01 0:01 | \\_ lsphp5:/home/cpanelaccount/public_html/index.php\r\n```\r\n\r\n>  When I strace one of these running PHP processes, it appears that the Quick Cache plugin is causing problems. The processes are frequently waiting for a mutex lock created by this plugin.\r\n\r\n---\r\n\r\nIt sounds like this might be related to recent changes to Cache Locking in Quick Cache and I'd like to test Quick Cache against the LiteSpeed web server to verify that are no obvious issues with Quick Cache and LiteSpeed.\r\n\r\nNote that @LittleBastard77 was running Quick Cache Pro v141231 at the time of this issue."},"comment":{"url":"https://api.github.com/repos/websharks/zencache/issues/comments/133285592","html_url":"https://github.com/websharks/zencache/issues/391#issuecomment-133285592","issue_url":"https://api.github.com/repos/websharks/zencache/issues/391","id":133285592,"user":{"login":"jaswsinc","id":1563559,"avatar_url":"https://avatars.githubusercontent.com/u/1563559?v=3","gravatar_id":"","url":"https://api.github.com/users/jaswsinc","html_url":"https://github.com/jaswsinc","followers_url":"https://api.github.com/users/jaswsinc/followers","following_url":"https://api.github.com/users/jaswsinc/following{/other_user}","gists_url":"https://api.github.com/users/jaswsinc/gists{/gist_id}","starred_url":"https://api.github.com/users/jaswsinc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jaswsinc/subscriptions","organizations_url":"https://api.github.com/users/jaswsinc/orgs","repos_url":"https://api.github.com/users/jaswsinc/repos","events_url":"https://api.github.com/users/jaswsinc/events{/privacy}","received_events_url":"https://api.github.com/users/jaswsinc/received_events","type":"User","site_admin":false},"created_at":"2015-08-21T04:56:37Z","updated_at":"2015-08-21T04:56:37Z","body":"@LittleBastard77 I'm taking a closer look at this now, and I wanted to see if you could confirm that your installation of PHP has the [cURL extension](http://php.net/manual/en/book.curl.php) installed?"}}