Merge branch '2.3' into 2.4

This commit is contained in:
Johan Wikman 2019-09-26 09:31:21 +03:00
commit 661c104d39

View File

@ -815,6 +815,17 @@ amount of memory available for each thread, divide the cache size with the value
of `threads`. If statements are evicted from the cache (visible in the
diagnostic output), consider increasing the cache size.
Using `maxctrl show threads` it is possible to check what the actual size of
the cache is and to see performance statistics.
Key|Meaning
---|-------
QC cache size|The current size of the cache (bytes).
QC cache inserts|How many entries have been inserted into the cache.
QC cache hits|How many times the classification result has been found from the cache.
QC cache misses|How many times the classification result has not been found from the cache, but the classification had to be performed.
QC cache evictions|How many times a cache entry has had to be removed from the cache, in order to make place for another.
### `query_classifier_args`
Arguments for the query classifier. What arguments are accepted depends on the