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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: Sam Westwood <sam@repeaterstore.com>, bloat@lists.bufferbloat.net
Subject: Re: [Bloat] We built a new bufferbloat test and keen for feedback
Date: Wed, 04 Nov 2020 18:43:25 -0500	[thread overview]
Message-ID: <19611.1604533405@localhost> (raw)
In-Reply-To: <CABks0J1r+bG7LoPhkn+rwz+72pDWdzGtdVCR+6=v+AobuXgrjA@mail.gmail.com>

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Sam Westwood <sam@repeaterstore.com> wrote:
    > Downlink Saturated, and Uplink Saturated. In the first stage we simply
    > measure latency to a file hosted on a CDN. This is usually around 5ms
    > and could vary a bit based on the user's location. We use the webTiming
    > API to find the time-to-first-byte, and consider that as the
    > latency. In the second stage we run a download, while simultaneously

Just to clarify:
  the latency measurement involves a TCP three-way handshake, with
  the fourth packet providing the end of the process.
  No TLS, I hope?

    > We built testing it on Chrome, but it works on Firefox and mobile
    > too. On mobile results may be a little different, as the APIs aren't
    > available and so instead we implemented a more manual method, which can
    > be a little noisier.

Would webrtc APIs have helped?


--
Michael Richardson <mcr+IETF@sandelman.ca>   . o O ( IPv6 IøT consulting )
           Sandelman Software Works Inc, Ottawa and Worldwide





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  reply	other threads:[~2020-11-04 23:43 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-04 21:30 Sam Westwood
2020-11-04 23:43 ` Michael Richardson [this message]
2020-11-04 23:54 ` Toke Høiland-Jørgensen
2020-11-05  1:52   ` Y
2020-11-05  0:23 ` Dave Collier-Brown
2020-11-05 11:48   ` Toke Høiland-Jørgensen
2020-11-05 13:24     ` [Bloat] Comparing bufferbloat tests (was: We built a new bufferbloat test and keen for feedback) Dave Collier-Brown
2020-11-05 14:24       ` Toke Høiland-Jørgensen
2020-11-05 16:06         ` Arshan Khanifar
2020-11-05 17:25           ` Toke Høiland-Jørgensen
2020-11-06 16:03             ` Stephen Hemminger
2020-11-06 16:17               ` Toke Høiland-Jørgensen
2020-11-06 17:05                 ` Sebastian Moeller
2020-11-08 22:07             ` Arshan Khanifar
2020-11-14  3:37               ` Dave Taht
2020-11-14 23:14                 ` Michael Richardson
2020-11-05  8:21 ` [Bloat] We built a new bufferbloat test and keen for feedback Sebastian Moeller
2020-11-05 21:30 ` Sam
2020-11-07 21:22 Rich Brown

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