Title: Misc Issues
Last modified: December 15, 2025

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# Misc Issues

 *  Resolved [fesarlis](https://wordpress.org/support/users/fesarlis/)
 * (@fesarlis)
 * [10 months ago](https://wordpress.org/support/topic/misc-issues-3/)
 * Hello, let me report some things I have noticed that might prove helpful. Some
   of the things below apply to ‘Info’ plugin.
    1. When WP rocket is active, there is always a notice ‘atec Cache APCu: Another‘
       advanced-cache.php’ already exists – please deactivate it first.’. Even if not
       using your plugin’s page cache.
    2. In Opcache, When Consistency is Off (as recommended) the details table shows‘
       Off’ in red. Perhaps it should be green.
    3. The ‘try to raise limit’ always appears. When I increase it, it still appears
       with a larger number every time.
    4. In my case there are almost 50% misses. How can i improve this?
 * Here are my settings:
 *     ```wp-block-code
       [opcache]opcache.enable=1opcache.memory_consumption=192opcache.interned_strings_buffer=16opcache.max_accelerated_files=50000opcache.max_wasted_percentage=15opcache.validate_timestamps=0opcache.mmap_base = 0x20000000opcache.revalidate_freq=60opcache.enable_cli=0opcache.save_comments=0opcache.load_comments=0opcache.revalidate_path=1opcache.use_cwd=1opcache.fast_shutdown=1opcache.jit_buffer_size=500000000opcache.jit=1235[apcu]apc.enabled=1apc.shm_segments=1apc.shm_size=128Mapc.max_file_size=1Mapc.stat=1apc.ttl=3600
       ```
   

Viewing 7 replies - 1 through 7 (of 7 total)

 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [10 months ago](https://wordpress.org/support/topic/misc-issues-3/#post-18756667)
 * Thank you for your feedback.
   1.This should only happen when you save settings.
   So it should be rare.As the plugin can’t tell what has changed on your system,
   the check runs on every save on/off this is to prevent accidentally deleting/
   overwriting existing page cache.2.Very good, you are right.Will be changed on
   next update.3.For memory the threshold is 50% so as long as your usage is >50%
   you will get the hint.4.Difficult to say without context, but you can try:`opcache.
   use_cwd=0``opcache.revalidate_path=0`If your memory usage is above 75%, increase
   opcache.memory_consumptionYour opcache.jit_buffer_size is much too high!8 or 
   even 1 MB will probably be enough (check usage) – or disable JIT, as WP will 
   almost not benefit from JIT at all.
 *  Thread Starter [fesarlis](https://wordpress.org/support/users/fesarlis/)
 * (@fesarlis)
 * [9 months, 4 weeks ago](https://wordpress.org/support/topic/misc-issues-3/#post-18760428)
 * Thank you for your reply. Regarding (1) as I said, the message is always displayed.
   I attach screenshot. I also attach another screenshot, I really cant understand
   a) Why memory/used is zero. And also why recommended is zero. I double checked
   it and in php.ini shows the correct value (now 512M). Used to work fine. [https://postimg.cc/gallery/KbbyJJ8](https://postimg.cc/gallery/KbbyJJ8)
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [9 months, 4 weeks ago](https://wordpress.org/support/topic/misc-issues-3/#post-18760521)
 * Did you ever hide the msg by clicking the X on the right?
   Please download latest
   version and let me know.
 *  Thread Starter [fesarlis](https://wordpress.org/support/users/fesarlis/)
 * (@fesarlis)
 * [9 months, 3 weeks ago](https://wordpress.org/support/topic/misc-issues-3/#post-18765391)
 * Of course I did 🙂
 * Anyway this is not an important issue. But let me mention some other things.
 * When I was talking about misses I was referring to apcu, not opcache (and one
   suggestion: It would be nice if you also showed **fragmentation **in your info)
 * [https://postimg.cc/xJgXtkYz](https://postimg.cc/xJgXtkYz)
 * Also in your info plugin, opcache is shown as zero, when it is 512M (memory 0,
   used 0, free 249M).
 * [https://postimg.cc/hhJZFVzb](https://postimg.cc/hhJZFVzb)
 * Here is my updated config.
 *     ```wp-block-code
       [opcache]opcache.enable=1opcache.memory_consumption=512Mopcache.interned_strings_buffer=64opcache.max_accelerated_files=50000opcache.max_wasted_percentage=10opcache.validate_timestamps=0opcache.revalidate_freq=60opcache.enable_cli=0opcache.save_comments=0opcache.load_comments=0opcache.revalidate_path=1opcache.use_cwd=1opcache.jit_buffer_size=1Mopcache.jit=1235[apcu]apc.enabled=1apc.shm_segments=1apc.shm_size=128Mapc.max_file_size=1Mapc.stat=1apc.ttl=3600
       ```
   
    -  This reply was modified 9 months, 3 weeks ago by [fesarlis](https://wordpress.org/support/users/fesarlis/).
    -  This reply was modified 9 months, 3 weeks ago by [fesarlis](https://wordpress.org/support/users/fesarlis/).
    -  This reply was modified 9 months, 3 weeks ago by [fesarlis](https://wordpress.org/support/users/fesarlis/).
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [9 months, 3 weeks ago](https://wordpress.org/support/topic/misc-issues-3/#post-18765435)
 * opcache.memory_consumption
   You do not specify units in the config; PHP assumes
   MB by default for this directive.So try changing to opcache.memory_consumption
   =512M However v1.8.31 has a parser to even except values with a unit – so please
   update.Fragmentation:“APCu doesn’t provide a standard fragmentation metric. Any
   percentage would be an approximation and different tools calculate it differently,
   which tends to confuse more than it helps. For that reason I’m not planning to
   display a fragmentation %.”
 *  Thread Starter [fesarlis](https://wordpress.org/support/users/fesarlis/)
 * (@fesarlis)
 * [9 months, 3 weeks ago](https://wordpress.org/support/topic/misc-issues-3/#post-18766220)
 * I already use 1.8.31, and I have also tried it without unit. Same output.
 * Any comment on how to adjust config to reduce misses? I notice that after a while
   there is a reduction, but it is still too high (approx 35%). Sorry if this is
   not actually your role (to tell us how to use apcu) but you obviously are far
   more experienced on this than most of us.
 * Have a merry Christmas and happy new year !
    -  This reply was modified 9 months, 3 weeks ago by [fesarlis](https://wordpress.org/support/users/fesarlis/).
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [9 months, 3 weeks ago](https://wordpress.org/support/topic/misc-issues-3/#post-18766476)
 * We need to be precise in what we are talking about.
   If you changed opache settings
   and mem is still 0 you most likely have another .ini overwriting settings. Try
   atec-system-info and check which settings are effective.Also flush the opcache
   so scripts get reloaded.
 * As for APCu, if you mean cache misses – that depends on the cache usage. Are 
   you using it as an object cache or for storage? Or both?
   A miss only means that
   data is not stored but requested. So if some script run apcu_fetch(“foo”) but
   never apcu_store(“foo”, “bar”) … that will always result in high misses.But the
   main issue is most likely that APCu is per PHP worker not per machine. If you
   have multiple workers running, you might hit different cache per request, thus
   you will get different results and only over time reach a higher hit rate – if
   ever.Remember: **High APCu miss rates are a natural side-effect of per-worker
   caches, not a sign of misconfiguration.**That said, your 128M may be too high,
   depending on your pm.max_children and machine memory.MC to you too.
    -  This reply was modified 9 months, 3 weeks ago by [docjojo](https://wordpress.org/support/users/docjojo/).

Viewing 7 replies - 1 through 7 (of 7 total)

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 * 7 replies
 * 2 participants
 * Last reply from: [docjojo](https://wordpress.org/support/users/docjojo/)
 * Last activity: [9 months, 3 weeks ago](https://wordpress.org/support/topic/misc-issues-3/#post-18766476)
 * Status: resolved