"David J Taylor"
writes:
>"Unruh" <> wrote in message news:34jgm.50898$ph1.36...@edtnps82...
>[]
>> Note that chrony will give you a factor of 2 or three improvement over
>> ntp in the errors, assuming that the roundtrip is equally split on
>> Linux or BSD.
>For those without wide-bandwidth ac
David J Taylor wrote:
> "Unruh" <> wrote in message news:34jgm.50898$ph1.36...@edtnps82...
> []
>> Note that chrony will give you a factor of 2 or three improvement over
>> ntp in the errors, assuming that the roundtrip is equally split on
>> Linux or BSD.
>
> For those without wide-bandwidth aca
David J Taylor wrote:
> For those without wide-bandwidth academic connections - those folks on
> cable or ADSL - how good is an "equal split round trip" assumption?
I calculated this for my case once (3840 kbit/s down and 512 kbit/s up). The
difference in transmission time due only to the differe
"David J Taylor"
wrote in
message news:%xqgm.126$ym4...@text.news.virginmedia.com...
> "Unruh" <> wrote in message news:34jgm.50898$ph1.36...@edtnps82...
> []
>> Note that chrony will give you a factor of 2 or three improvement over
>> ntp in the errors, assuming that the roundtrip is equally
David J Taylor wrote:
>
> "David J Taylor"
> wrote in
> message news:%xqgm.126$ym4...@text.news.virginmedia.com...
>> "Unruh" <> wrote in message news:34jgm.50898$ph1.36...@edtnps82...
>> []
>>> Note that chrony will give you a factor of 2 or three improvement over
>>> ntp in the errors, assum
Jan Ceuleers wrote:
> This is however only the best case, because it assumes that the
> uplink is not saturated. If it is, and if you are able to prioritise your
I suspect most severe asymmetry cases actually happen because the
downlink is saturated. That's is exacerbated by the fact that it is
David Woolley wrote:
> I suspect most severe asymmetry cases actually happen because the
> downlink is saturated. That's is exacerbated by the fact that it is
> more difficult to get the ISP to prioritise, than to do it yourself.
There is no point to large amounts of buffering in the ISP's edge r
"David J Taylor"
writes:
>"David J Taylor"
> wrote in
>message news:%xqgm.126$ym4...@text.news.virginmedia.com...
>> "Unruh" <> wrote in message news:34jgm.50898$ph1.36...@edtnps82...
>> []
>>> Note that chrony will give you a factor of 2 or three improvement over
>>> ntp in the errors, assu
David J Taylor writes:
> On consumer-grade circuits the assumption about equal round trip is
> unlikely to be valid.
Why would you expect the asymmetry to be worse there than elsewhere?
--
John Hasler
jhas...@newsguy.com
Dancing Horse Hill
Elmwood, WI USA
___
"Unruh" wrote in message
news:qg_gm.50009$db2.46...@edtnps83...
> "David J Taylor"
> writes:
>
>
>>"David J Taylor"
>> wrote in
>>message news:%xqgm.126$ym4...@text.news.virginmedia.com...
>>> "Unruh" <> wrote in message news:34jgm.50898$ph1.36...@edtnps82...
>>> []
Note that chrony will
"David J Taylor"
writes:
>"Unruh" wrote in message
>news:qg_gm.50009$db2.46...@edtnps83...
>> "David J Taylor"
>> writes:
>>
>>
>>>"David J Taylor"
>>> wrote in
>>>message news:%xqgm.126$ym4...@text.news.virginmedia.com...
"Unruh" <> wrote in message news:34jgm.50898$ph1.36...@edtnps82
> David J Taylor writes:
>> On consumer-grade circuits the assumption about equal round trip is
>> unlikely to be valid.
>
> Why would you expect the asymmetry to be worse there than elsewhere?
> --
> John Hasler
It's just an impression I had - that consumers get the worst latency and
most overl
"Unruh" <> wrote in message news:kx%gm.50022$db2.12...@edtnps83...
[]
> As I said, chrony does a linear regression on the last n offsets.
[]
Bill,
I think we have seen these remarks about chrony before.
What I was wanting was a yes/no answer (although numbers would be nice) to
the question:
-
David J Taylor writes:
> It's just an impression I had - that consumers get the worst latency
> and most overloaded network equipment...
Perhaps, but it doesn't follow that they suffer a great deal of
asymmetry.
> ...and no direct connection to an ultra-high-speed academic network.
Of course not
David J Taylor wrote:
>
> "Unruh" wrote in message
> news:qg_gm.50009$db2.46...@edtnps83...
>> "David J Taylor"
>> writes:
>>
>>
>>> "David J Taylor"
>>> wrote in
>>> message news:%xqgm.126$ym4...@text.news.virginmedia.com...
"Unruh" <> wrote in message news:34jgm.50898$ph1.36...@edtnps8
David Lord writes:
>David J Taylor wrote:
>>
>> "Unruh" wrote in message
>> news:qg_gm.50009$db2.46...@edtnps83...
>>> "David J Taylor"
>>> writes:
>>>
>>>
"David J Taylor"
wrote in
message news:%xqgm.126$ym4...@text.news.virginmedia.com...
> "Unruh" <> wrote in message n
"David J Taylor"
writes:
>"Unruh" <> wrote in message news:kx%gm.50022$db2.12...@edtnps83...
>[]
>> As I said, chrony does a linear regression on the last n offsets.
>[]
>Bill,
>I think we have seen these remarks about chrony before.
Some have, some have not. I was just putting out there wha
Unruh wrote:
> David Lord writes:
>
>> David J Taylor wrote:
>>> "Unruh" wrote in message
>>> news:qg_gm.50009$db2.46...@edtnps83...
"David J Taylor"
writes:
> "David J Taylor"
> wrote in
> message news:%xqgm.126$ym4...@text.news.virginmedia.com...
>> "Unr
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