Rob Browning <r...@defaultvalue.org> writes: > For what it's worth, in an earlier round of testing I also hacked up > open-pipe to let me access the underlying ports and set their buffers to > 65k. That doubled the transfer rate, but of course, it's still fairly > slow.
I also ran statprof on the OPEN_BOTH case and saw that the majority of the time was spent in read-char (guessing via the open-pipe soft-port). I also observed that the machine's fan spun up during the OPEN_BOTH test (presumably due to high CPU use). I haven't tried to track it down yet, but if the only underlying way to get a fixed block of data out of an OPEN_BOTH port is read-char, then that might explain much of the difference. -- Rob Browning rlb @defaultvalue.org and @debian.org GPG as of 2011-07-10 E6A9 DA3C C9FD 1FF8 C676 D2C4 C0F0 39E9 ED1B 597A GPG as of 2002-11-03 14DD 432F AE39 534D B592 F9A0 25C8 D377 8C7E 73A4
