Hi Kevin, Silly idea, use the Windows rollback point (or what is it called) from before the update and then run Windows upgrade again. Sebastian On July 16, 2016 1:53:20 PM GMT+02:00, Kevin Darbyshire-Bryant wrote: > > >On 16/07/16 11:59, Dave Täht wrote: >> I would repeat the same test with htb+fq_codel. > >Hi Dave, > >That's more challenging than it sounds - reproducing the test scenario >would require the windows box going back in time. What could it be >doing that so far any of the flent tests fail to replicate? Hmmm, so >far I've used a local flent server...I wonder if RTT is at play here? > >Kevin > >> >> On 7/16/16 11:35 AM, Kevin Darbyshire-Bryant wrote: >>> Hi guys, >>> >>> Encountering some behaviour that I don't understand. Line is a >40/10 >>> cake limited to 39000/9840. Overheads 12, 'dual-dsthosts' in >ingress, >>> 'dual-srcshosts' on engress - limiting the on the WAN line. Take a >look >>> at my ping response graph >>> >>> >http://www.thinkbroadband.com/ping/share/9822cb5160582fa6abee29b60d807766-16-07-2016.html >>> >>> >>> Around 20:30 I fired up a windows machine that was behind on its >updates >>> so it generated a bit of ingress traffic. Note the comparatively >high >>> latency (40ms) and stupidly high ping packet loss (50%) The 3-5ms >>> steady (blue) latency you can see is a system backup (so egress >traffic) >>> running till around 23:00. >>> >>> The really strange bit is that cake stats show it has only dropped >10 >>> (yes 10!) packets. >>> >>> I'm not the only person encountering 'interesting' behaviour with >regard >>> to windows updates inducing high latency and high packet loss. It's >as >>> if cake weren't there managing flows and this is the ISP's rate >limiter >>> in action. >>> >>> Kevin >>> >>> _______________________________________________ >>> Cake mailing list >>> Cake@lists.bufferbloat.net >>> https://lists.bufferbloat.net/listinfo/cake >> _______________________________________________ >> Cake mailing list >> Cake@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/cake > >_______________________________________________ >Cake mailing list >Cake@lists.bufferbloat.net >https://lists.bufferbloat.net/listinfo/cake -- Sent from my Android device with K-9 Mail. Please excuse my brevity.