Horton

Re: gettimeofday() goes backwards on FreeBSD 4.9

Neil Conway <neilc@samurai.com>

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From: Neil Conway <neilc@samurai.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: "Marc G. Fournier" <scrappy@postgresql.org>, pgsql-hackers@postgresql.org
Date: 2003-11-29T01:13:13Z
Lists: pgsql-hackers 
Tom Lane <tgl@sss.pgh.pa.us> writes:
> Whoa.  Try the following test program.

I tried this on two uniprocessor x86 machines:

(1)

$ uname -a
Linux tokyo 2.6.0-test10 #3 Mon Nov 24 13:43:54 EST 2003 i686 GNU/Linux

This machine produces this output, after running the test app for
about 30 minutes:

out of order tv_sec: 1070067959 929846, prev 1070067957 813066
out of order tv_usec: 1070068017 80145, prev 1070068017 80384
out of order tv_usec: 1070068017 104138, prev 1070068017 104368

(2)

$ uname -a
FreeBSD home.samurai.com 4.9-RELEASE FreeBSD 4.9-RELEASE #0: Thu Nov  6 21:25:41 EST 2003     bryanf@joe.samurai.com:/usr/obj/usr/src/sys/SAMURAI  i386

This machine produces no output after running the test app for about
30 minutes.

-Neil