I am running an Ubuntu 20.04 LEMP server with the pagespeed module for Nginx in a business environment. In my /var/log/nginx/error.log
I am seeing the following error:
[ngx_pagespeed 1.15.0.0-8811] Slow write operation on file /usr/share/nginx/ngx_pagespeed_cache/v3/mcmo.is/https,3A/,2Fwww.mcmo.is/wp-content/uploads/2022/05/McMo-Art-Tryclops-1-scaled.webp,.tempqfKyZe: 61.512ms; configure SlowFileLatencyUs to change threshold
What exactly does this mean, and how can I improve/fix things so that this error no longer appears?