From: Benjamin Cronce <bcronce@gmail.com>
To: Michael Richardson <mcr@sandelman.ca>
Cc: Arie <nospam@ariekanarie.nl>, bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] Curious bufferbloat on DOCSIS connection with many downloads
Date: Wed, 24 Jan 2018 18:15:02 -0600 [thread overview]
Message-ID: <CAJ_ENFGh00JL1u86BpQA2rzopp+rekqbsriWkL=oV5VoPg7r-Q@mail.gmail.com> (raw)
In-Reply-To: <27327.1516138449@obiwan.sandelman.ca>
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Along what Michael Richardson said, with GPON I have seen where idle
latency was ~1.5ms, but under load latency was about 0.2ms. I wouldn't be
surprised if TDMA scheduling playing a factor. I don't know what kind of
latency SLAs DOCSIS can or typically have. GPON has scheduling latency all
the way down to 0.5ms.
On Tue, Jan 16, 2018 at 3:34 PM, Michael Richardson <mcr@sandelman.ca>
wrote:
>
> Arie <nospam@ariekanarie.nl> wrote:
> > I'm puzzled by this result, somehow sending 300KB/s of empty packets
> > upstream drastically improves the latency of my connection when it's
> > receiving many downloads.
>
> Maybe not exactly power save, but perhaps asking for the upstream bandwidth
> gets the CMTS to notice you more often and schedule a dump of it's queue of
> traffic for you.
>
> --
> ] Never tell me the odds! | ipv6 mesh
> networks [
> ] Michael Richardson, Sandelman Software Works | network
> architect [
> ] mcr@sandelman.ca http://www.sandelman.ca/ | ruby on
> rails [
>
>
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
>
>
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prev parent reply other threads:[~2018-01-25 0:15 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-16 19:36 Arie
2018-01-16 19:52 ` Dave Taht
2018-01-16 20:48 ` Arie
2018-01-16 21:34 ` Michael Richardson
2018-01-25 0:15 ` Benjamin Cronce [this message]
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