On 5 January 2017 at 19:01, Andres Freund <and...@anarazel.de> wrote: > That's a bit odd - shouldn't the OS network stack take care of this in > both cases? I mean either is too big for TCP packets (including jumbo > frames). What type of OS and network is involved here?
2x may be plausible. The first 128k goes out, then the rest queues up until the first ack comes back. Then the next 128kB goes out again without waiting... I think this is what Nagle is supposed to actually address but either it may be off by default these days or our usage pattern may be defeating it in some way. -- greg -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
