Commit graph

6 commits

Author SHA1 Message Date
Aikar
879269f221 Improve mid tick chunk loading, Fix Oversleep, other improvements
Process loads outside of any canSleep check. Original intent was to
only apply those restrictions to generations but realized I had some
checks higher up the call chain.

Reworked the back off strategy to just run every 1 millisecond per world,
and to apply the per tick limit to generations only.

This guarantees that your chunk will load with at most around 1ms delay.

Additionally, fire midTick processing in a few more places, notably the
oversleep section so we can keep processing loads here too which has
a large up to 50ms window...

Speaking of oversleep, we had a bug in our implementation changes for
Timings that caused oversleep to not sleep the correct amount.

Because we now moved it into the NEXT tick instead of THIS tick, the
value of nextTick had already been increased to +50ms, resulting in
the risk of sleeping more than it should, but, more importantly, this
caused every task that was trying to NOT run during oversleep to actually
run during oversleep.

This is now fixed.

Another small tweak is to the /tps command, to no longer show the star when
TPS is right at 20.

Due to ineffeciencies in the sleep precision, TPS is commonly 20.02.
This causes the star to show up almost constantly, so now only show it if
we actually hit a real "catchup".

This commit also improves the changes to the CallbackExecutor, in that
it now is also recursion safe.

It was possible that the executor could run tasks out of desired order
if the executor task scheduled more executor tasks.

We solve this by ensuring new additions do not enter the currently iterated queue.

Each depth level will have its own queue.

Fixes #3220
2020-04-25 23:47:29 -04:00
Ytnoos
f7e48582b5 Revert "Re-track players that dismount from other players" 2020-04-22 00:06:30 +02:00
Aikar
9fc8102ef5 Load Spawn Chunks Asynchronously and Spiral Out
Ensures absolute center is first in priority
Speeds up server startup
2020-04-19 06:01:07 -04:00
Spottedleaf
e7f799903e Fix incorect timing of mspt
Move oversleep and all task execution back into the timed area...
2020-04-15 18:48:07 -07:00
Aikar
98218db96f Use dedicated thread for main thread blocking chunk loads
In most cases, this change won't benefit much. However, there
exists the possibility that your Chunk Task threads are all busy
doing super slow work such as converting chunks.

If this occurs, the main thread blocking tasks, even at highest priority,
has to wait for some thread to become available.

This change gives us a waiting thread used only for main thread blocking
tasks, as well as an increased thread priority level, so that the OS
will give priority to this thread over the other threads.

This is more about guarantees, and won't be any real performanc boost
to anyone who has low or fast activity on their chunk tasks anyways.

But not all of us force upgrade our worlds, and this can be a life saver.

also reordered some patches because multiple PR's were merged.
2020-04-11 04:40:00 -04:00
BillyGalbreath
c8367bb129 Add tick times API and /mspt command (#3102) 2020-04-11 00:52:17 -05:00