Re: occasional "Warning: lost track of 460840 pulled message(s)"

[Oswald B. <osw...@gm...>]

On Mon, Nov 08, 2021 at 10:53:00PM +0100, Uwe Kleine-König wrote:
>A strange thing is that a run with -V works (unless it does not because 
>the tunnel breaks), while with -D it reproducible fails :-\
>
>A typical ending then is:
>
my guess is that the server just disconnects, because things took too 
long, though it seems slightly weird that enabling debugging would make 
a difference.

we already know that the process actually consumes lots of cpu time.
make a debug build of mbsync, and do some profiling ... though i'm not 
sure how to do that best - the go-to recommentation would be "use 
valgrind --tool=callgrind", but that would take *ages*, which might 
distort the result (though it might not matter). "perf" (which is 
kernel-based, afaik) might work better, but i never played with it.