Warner Losh writes: > > On Feb 12, 2014, at 1:50 PM, Harlan Stenn wrote: > > The conclusions I draw from the utter lack of any similar reports from > > non-linux systems are: > > > > - either those kernels/libraries did not do leap-second processing, or > > - they did and their code worked > > > > Do you have different conclusions? > > Yes. > > Linux is more popular and examined than other systems. Linux is more > open than Windows, so bugs there won't be as well publicized. Linux is > more popular than FreeBSD, which also handles leap seconds in the > kernel. There have been about half a dozen bugs in FreeBSD's leap > second handling that I've fixed over the years. The code mostly works, > but I'm sure if it were studied in detail some aspect of leap seconds > wouldn't be handled pedantically correctly (absolute timeouts for > condvars in posix will, for sure, take a second longer to timeout > across a leap second boundary).
Doesn't pass my "smell" test. I know lots of folks who run Windows, nobody reported seeing this problem there. I run FreeBSD on *lots* of boxes, many different versions. None of them saw this. We're not talking about pedantically correct, we're talking about locking up the box. > Linux is also has a higher rate of change and rewrite than FreeBSD, > which is another reason it gets tripped up by these issues more > often. The number of extant linux kernel versions is quite large > compared to most other systems as well. With this much change, there's > sure to be something overlooked, and quite often it is the "edge" > cases, like leap seconds. So you are saying that Linux is a paragon of quality and design and development, and as proof of this you offer a painful screwup as "the exception that proves the rule"? > Other systems are less open, and sweep this data under the rug is also > a valid conclusion. That implies their customers didn't write about it or complain to anybody. I think I don't have anything more to add to this discussion. H _______________________________________________ LEAPSECS mailing list LEAPSECS@leapsecond.com http://six.pairlist.net/mailman/listinfo/leapsecs
