On Wed, Jul 8, 2015 at 3:23 AM, Hal Murray <[email protected]> wrote: > I was monitoring Google's time servers over the recent leap second. That > graph happened to include some good examples of bloat. > > http://www.megapathdsl.net/~hmurray/bloat/google-off-smear-bloat.png > > I have a slow DSL line with almost 4 seconds of buffering. > > The blobs at -20 and -15 seconds are typical of a single large download. The > column at -6 seconds is typical of several active connections.
That is a very interesting graph! Does ntp adjust system time backward based on getting nearly all it's samples with well over a 1/2 second of induced delay? Interestingly (or disturbingly) - dnsmasq just found and fixed a crash bug that happened when time ran backwards. I can imagine a few other core utilities/protocols/system services that should be checked for bad behavior in this case. http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2015q3/009701.html > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > Bloat mailing list > [email protected] > https://lists.bufferbloat.net/listinfo/bloat -- Dave Täht worldwide bufferbloat report: http://www.dslreports.com/speedtest/results/bufferbloat And: What will it take to vastly improve wifi for everyone? https://plus.google.com/u/0/explore/makewififast _______________________________________________ Bloat mailing list [email protected] https://lists.bufferbloat.net/listinfo/bloat
