* Previously it deleted the value it just cached due to a missing suffix,
which would lead to connection spam to get the new lag values.
Change-Id: I1040b2b87d3d4ddd7c368291cab87daf4227c2d0
Xhprof generates this data now. Custom profiling of various
sub-function units are kept.
Calls to profiler represented about 3% of page execution
time on Special:BlankPage (1.5% in/out); after this change
it's down to about 0.98% of page execution time.
Change-Id: Id9a1dc9d8f80bbd52e42226b724a1e1213d07af7
* Do not block forever, but wait up to 10 seconds. Likewise,
check the lag times in memcached on startup. This at least
lets runners avoid lagged wikis but still work on others.
* Made a few small related documentation and code cleanups.
Change-Id: Ic1339bab54cba6b6cbea7d97a80ff87c7c5c87af
Doxygen expects parameter types to come before the
parameter name in @param tags. Used a quick regex
to switch everything around where possible. This
only fixes cases where a primitve variable (or a
primitive followed by other types) is the variable
type. Other cases will need to be fixed manually.
Change-Id: Ic59fd20856eb0489d70f3469a56ebce0efb3db13
By PSR2 PHP Standard, the files should ends with exactly one newline.
Some of our files have 2 or more and some other were missing a newline.
Fix almost all occurences of CodeSniffer sniff:
PSR2.Files.EndFileNewline.TooMany
I have not fixed the selenium files, I believe we will drop them.
Change-Id: I89fca8c1786fee94855b7b77bb0f364001ee84b6
* Merged the 4 simulated implementations of Database*::replace(). I took diffs, they were nearly identical. I made one based on the IBM DB2 version, since it used insert() which looked like a nice touch.
* Provided the non-simulated implementation of Database*::replace() via a protected member function, and made DatabaseMysql::replace() and DatabaseSqlite::replace() into a wrapper for it.
* Moved the MySQL-specific functionality from masterPosWait(), getSlavePos() and getMasterPos() from DatabaseBase to DatabaseMysql.
* Renamed getStatus() to getMysqlStatus() and moved it to DatabaseMysql. Removed "unimplemented" errors from two other subclasses. Really there's no way another DBMS could or should implement this function.
* Split the LoadMonitor class into a no-op class and a MySQL-specific class, to avoid fatal errors due to the getMysqlStatus() call if other DBMSs tried to use LoadBalancer with multiple servers. Of course there are lots of other reasons it won't work, I'm just fixing the architecture issue here.
And while I have a replicated test setup handy:
* On MySQL 4.1.9 and later, use SHOW SLAVE STATUS to get the lag instead of SHOW PROCESSLIST. This has the advantage of reading zero when there are no events for a while.
* Use an associative array to initialise LoadBalancer objects
* By default, use Preprocessor_DOM if available, otherwise use Preprocessor_Hash. Preprocessor_Hash has worse performance.
* Fix parserTests.php for replicated databases. Use CREATE TABLE instead of CREATE TEMPORARY TABLE if there is more than one server configured.
* Log exceptions even in command-line mode.
