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You need to increase http://www.litespeedtech.com/docs/webserver/config/extapps#memSoftLimit run "ulimit -a" from the test script, see what is the limit applied.

It could be the memory limit applied to PHP processes. please check/raise lsphp5 external app's memory soft/hard limit configuration.

No, it is not supported, since it is going be applied at server level, you can put it in pre-main or pre-vhost include.

LiteSpeed upgrade wont overwrite that directory. But it is not recommended, it is better to create your own vhost with its own vhost root directory. do not put it under /usr/local/lsws.

You can check what happened with that script with strace. change script to <?php sleep(30); passthru('/home/username/public_html/example.com/cgi-bin/wkhtmltoimage http://google.com/ /tmp/test.png 2>&1'); ?> locate the PHP process processing the script with "ps -ef | grep php". then strace...

It could be permission issue for accessing .htaccess from PHP. Are you using PHP suEXEC? If you are using 4.2.21, please do a force reinstall see if it helps or not. /usr/local/lsws/admin/misc/lsup.sh -f -v 4.2.21

This issue should have been fixed in the latest build of 4.2.21, please force reinstall. /usr/local/lsws/admin/misc/lsup.sh -f -v 4.2.21

Yes, you can query the server via a special URL. curl -i http://localhost:7080/status?rpt=detail You can only do it through localhost .

Can you try a force reinstall, make sure you are using the latest build of 4.2.21.

What hosting control panel are you using? It might be an issue with current 4.2.21 release build due to internal changes. We got a report on Plesk.

It should be refreshed every 10 seconds.

I think CloudFlare send header to us.

Please upgrade to 4.2.21 /usr/local/lsws/admin/misc/lsup -f -v 4.2.21

A new build is available, should be fixed.

No, LiteSpeed does not call gethostbyname() at runtime. Calling it will block our event loop, we must avoid calling it by design.

That's what I would suggest. fixing APC bug is beyond what we can help. strace the running lsphp5 process to find out what happened if it still happens.

I think it is a dead lock in APC's SHM access code, so as long as PHP process using the same SHM segment, it cannot process anything as it will be locked immediately when load a script from APC. You should strace the PHP process when it happens, if it stuck at "futex()" call, it is a dead lock...

Do you have bandwidth throttling set? http://www.litespeedtech.com/docs/webserver/config/security#outBandwidth

APC may not be stable with PHP 5.4+, can you switch to xcache or opcache. For user cache, you can use APCu if you are using it.

you need to rebuild your PHP binary, pdo_sqlite extension is broken. or take out pdo_sqlite.so out from the php.ini .