> > Could you describe the worklad a bit more? Is this rather concurrent? Do > you use optimized or debug builds? How long did you wait for the > backends to die? Is this all over localhost, external ip but local, > remotely? >
The workload is a a rather diverse set of integration tests executed with Npgsql. There's no concurrency whatsoever - tests are executed serially. The backends stay alive indefinitely, until they are killed. All this is over localhost with TCP. I can try other scenarios if that'll help. > > Note that the number of backends that stay stuck after the tests is > > constant (always 12). > > Can you increase the number of backends used in the test? And check > whether it's still 12? > Well, I ran the testsuite twice in parallel, and got... 23 backends stuck at the end. > How are your clients disconnecting? Possibly without properly > disconnecting? > That's possible, definitely in some of the test cases. What I can do is try to isolate things further by playing around with the tests and trying to see if a more minimal repro can be done - I'll try doing this later today or tomorrow. If anyone has any other specific tests or checks I should do let me know.
