Privet ! >Could you please elaborate? What’s wrong with rock on ext4? < Default ext4 uses a "journal" of the modifications. Which adds I/O. Timestamps of filemods are other I/Os. I do not think, that these features are required for rock. Disabling journal completely will cause loss of data (cached) in case of disk failure, but this is a very rare event, and will be recovered over time by filling up cache again. So, in case rock is on its own private disk/partition, I feel very well to disable journal completely. For a start: https://askubuntu.com/questions/573957/disabling-journaling-in-ubuntu-14-04 Dunno whether possible using AWS. As I like to have full control, I do not use AWS at all. -- Sent from: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-Users-f1019091.html _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users