While editing menu items in joomla administrator dashboard page it was showing time out with following error in the log
[Sat Aug 27 17:44:47.9738 2017] [fcgid:warn] [pid 30479:tid 140638739744512] (32)Broken pipe: [client x.x.x.x:50433] mod_fcgid: ap_pass_brigade failed in handle_request_ipc function, referer: http://domain.com/administrator/index.php?option=com_menus&view=items&menutype=mainmenu
Fix
Increased the timeout value in apache configuration.