Support » Plugin: W3 Total Cache » W3TC APCu = Fragmentation

  • I recently upgraded the PHP version on my WordPress host, so I’m using the built-in Zend OpCache. I’ve disabled APC, but installed the APC User Cache (APCu), which W3TC recognizes as simply “APC.”

    However, the APCu status shows massive fragmentation:

    http://i.imgur.com/lWk7V6w.jpg

    And when I check the User Cache Entries, all of them are:

    w3tc_0_object__115788395_key_version
    w3tc_0_object_0_115788395_key_version
    w3tc_key_www.example.com_0_pgcache_37783e233f974097a299e776139014cc_gzip_0
    w3tc_key_www.example.com_0_object_34005943fbfb43f65cabcf1415c4024f_0
    w3tc_key_www.example.com_0_pgcache_e0451e0a8e03d51649483978717412c0_gzip_0
    w3tc_key_www.example.com_0_object_19822f9083078f85f69babadcc519e0f_0

    etc.

    Site performance seems fine, but I don’t know if the fragmentation is causing things to run sub-optimally.

    I also have memcached available on this server. Is that a better performance option to run with W3TC? Or are there some tweaks to APCu that I should try?

    Any input from others running W3TC + Zend OpCache + APCu or memcached is appreciated.

    Thanks!

    https://wordpress.org/plugins/w3-total-cache/

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