I'm using comint to communicate with a REPL.
From time to time the REPL sends large amounts of data. This causes a significant lag (about one second), because my filter function gets called on a bunch of small strings, instead of fewer, larger strings. (even with a fast filter function, parsing 1MB of output still ends up taking 0.001 ms per filter call, times 1000 = 1s).
Is there a way to get emacs to package the output into larger chunks?
process-adaptive-read-buffering is already set to
The manual says:
The output to the filter may come in chunks of any size. A program that produces the same output twice in a row may send it as one batch of 200 characters one time, and five batches of 40 characters the next. If the filter looks for certain text strings in the subprocess output, make sure to handle the case where one of these strings is split across two or more batches of output; one way to do this is to insert the received text into a temporary buffer, which can then be searched.