So we have an application that performs fine on macOS and Windows, registering barely any CPU usage normally, but uses 100% CPU at all times on Linux. So far this doesn’t seem to be something I can easily recreate with a simple example, so I’m asking if anyone has ideas of things to look for that might be specifically bad on Linux.
Any ideas appreciated.
Okay so I finally tracked it down to a thread that calls Sleep(500) and uses Locks to control iterations of its loop in the Run event handler. Is there a better / any other way to do this kind of thing?
dim batch as Collection
while not Done
if Queue.Count > 0 then
// Make a copy of the current queue as our batch to process,
// then release the CriticalSection so we don't impact the UI
batch = Queue
Queue = new Collection
dim data as Dictionary
for i as integer = 1 to Batch.Count
if Batch.Item(i) = nil then continue
data = Batch.Item(i)
Seems like maybe just setting the sleep period to 2000 instead of 500 milliseconds helps a ton, though I wouldn’t expect it to be such a huge impact as it is fine on other platforms. Puzzling still.
Small hint: Collections are a very, very old language construct of Xojo, which has not been maintained for a long time. An array or, even better, dictionary should bring the code more up to date. Is there a compelling reason to use the slow collections?