Wordpress LScache Plugin: Crawler keeps causing crashes
Last Updated on: Wed, 15 Apr 2026 00:00:02 We have the LSCache WP plugin installed on 2 sites one with & one without QUIC.cloud. I never tried to enable the crawler on the one thats cached separately since I didnt see the need but even after restarting the server then we keep getting fatal errors (E_ERROR) when trying to manually run the crawler for preloading the cache for the QUIC.cloud cached site. Heres the most recent one: 2019-07-18T18:51:00+00:00 CRITICAL Uncaught Error: Call to undefined function sys_getloadavg() in C: wamp64 www EMRO wp-content plugins litespeed-cache lib litespeed litespeed-crawler.class.php:458 Stack trace: #0 C: wamp64 www EMRO wp-content plugins litespeed-cache lib litespeed litespeed-crawler.class.php(229): Litespeed_Crawler->_adjust_current_threads() #1 C: wamp64 www EMRO wp-content plugins litespeed-cache inc crawler.class.php(485): Litespeed_Crawler->engine_start() #2 C: wamp64 www EMRO wp-content plugins litespeed-cache inc crawler.class.php(354): LiteSpeed_Cache_Crawler->_crawl_data(false) #3 C: wamp64 www EMRO wp-includes class-wp-hook.php(286): LiteSpeed_Cache_Crawler::crawl_data() #4 C: wamp64 www EMRO wp-includes class-wp-hook.php(310): WP_Hook->apply_filters(, Array) #5 C: wamp64 www EMRO wp-includes plugin.php(531): WP_Hook->do_action(Array) #6 C: wamp64 www EMRO wp-cron.php(133): do_action_ref_array(litespeed_crawl..., Array) #7 main thrown in C: wamp64 www EMRO wp-content plugins litespeed-cache lib litespeed litespeed-crawler.class.php on line 458 Report number: MUDPYCSA Report date: 07/18/2019 18:48:37 Please assist, thanks! You are using Windows, and that function is not implemented in PHP for windows. See https://www.php.net/manual/en/function.sys-getloadavg.php Is this a development or production environment? Well its about to be production since were in a soft launch for a few more days now. Now nowhere in the crawler documentation does it say that is only available for Apache for Linux although the example directory paths imply it a bit. Whether its documented or not, the plugin should be smart enough to check if on Windows & not allow the crawler to be enabled (manually or by cron job) until it is compatible. At first I only noticed the crashes/errors when I got Your Site is Experiencing a Technical Issue e-mails from WordPress each time I manually ran the crawler but come to find out when looking at the server logs that the cron job has been running and erroring out a lot. This issue could and should be avoided until ready for WAMP support. The fix is in https://github.com/litespeedtech/lscache_wp/commit/7f6d1673aabff6670a0b7b7548411ea22afe4b42 and will be in v3.0. There will be no PHP fatal error shown. Thanks.
LiteCache Rush: Speed comes from using less, not from doing it faster
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