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Re: [Per-Entity] Latency figures for CDNs


Chronological Thread 
  • From: Patrick Radtke <>
  • To: Tom Scavo <>
  • Cc: Per-Entity Metadata Working Group <>
  • Subject: Re: [Per-Entity] Latency figures for CDNs
  • Date: Tue, 6 Sep 2016 11:17:59 -0700
  • Ironport-phdr: 9a23:zSBZ7xDGLAWFW7lk+5YHUyQJP3N1i/DPJgcQr6AfoPdwSP77osbcNUDSrc9gkEXOFd2Crakb26yL6Ou5BCQp2tWojjMrSNR0TRgLiMEbzUQLIfWuLgnFFsPsdDEwB89YVVVorDmROElRH9viNRWJ+iXhpRZbIBj0NBJ0K+LpAcaSyp3vj6Hhs6HUNjlPgXKGarpsK13isR/KvcAIhqNjLLo80B3EviEOduhLkzBGP1WWyi71+t2x950ryS1cp/Esv5pYWLngfq87ZbdZFi47KGE56cv3tAXSCwCI4y1PAS0tjhNUDl2dv1nBVZDrv36/77Il1Q==
> Okay, testing my theory...the diff (time_starttransfer -
> time_pretransfer) in each case is:
>
> 0.211
> 0.090
> 0.085
> 0.086
> 0.086
>
> The first one is clearly an outlier...any idea why?

I'm not sure. Repeating the test now, I get a diff of
0.195
0.086
0.170
0.085
and then ~0.085 for the next 10 in a row.

It might just be the variability of last mile connections.

-Patrick

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