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From: "Toke Høiland-Jørgensen" <notifications@github.com>
To: tohojo/flent <flent@noreply.github.com>
Cc: Subscribed <subscribed@noreply.github.com>
Subject: Re: [Flent-users] [tohojo/flent] flent: extremely high ping times on macOS (#178)
Date: Mon, 09 Sep 2019 10:00:51 -0700	[thread overview]
Message-ID: <tohojo/flent/issues/178/529572916@github.com> (raw)
In-Reply-To: <tohojo/flent/issues/178@github.com>


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Rich Brown <notifications@github.com> writes:

>> > 2. Why is there a discrepency between the
>  `--test-parameter=ping_hosts=...` reading (showing 30-38 msec in my
>  tests) and a separate, concurrent fping test (see original post, where
>  it was running 20-22 msec)?
>
>> Good question. IPv4 vs IPv6 maybe?
>
> I don't think so. Here's fping for both atl.richb-hanover.com (IPv4 only) and atl6 (IPv6)...
>
> ```
> bash-3.2$ fping -c 1000 atl.richb-hanover.com  -D
> [1568033075.420184] atl.richb-hanover.com : [0], 84 bytes, 40.4 ms (40.4 avg, 0% loss)
> [1568033076.423893] atl.richb-hanover.com : [1], 84 bytes, 40.9 ms (40.6 avg, 0% loss)
> [1568033077.426595] atl.richb-hanover.com : [2], 84 bytes, 41.7 ms (41.0 avg, 0% loss)
> [1568033078.430768] atl.richb-hanover.com : [3], 84 bytes, 40.8 ms (40.9 avg, 0% loss)
> ^C
> bash-3.2$ fping -c 1000 atl6.richb-hanover.com  -D -6
> [1568033063.252647] atl6.richb-hanover.com : [0], 64 bytes, 40.0 ms (40.0 avg, 0% loss)
> [1568033064.254237] atl6.richb-hanover.com : [1], 64 bytes, 40.8 ms (40.4 avg, 0% loss)
> [1568033065.257423] atl6.richb-hanover.com : [2], 64 bytes, 40.7 ms (40.5 avg, 0% loss)
> [1568033066.261700] atl6.richb-hanover.com : [3], 64 bytes, 40.8 ms (40.6 avg, 0% loss)
> ^C
> atl6.richb-hanover.com : xmt/rcv/%loss = 4/4/0%, min/avg/max = 40.0/40.6/40.8
> ```
>

You're not setting the period; does adding -p 200 make a difference? I
suppose fping could be self-congesting if your link is very slow...



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  parent reply	other threads:[~2019-09-09 17:01 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-06 11:57 Rich Brown
2019-09-06 14:49 ` Dave Täht
2019-09-06 15:15 ` Rich Brown
2019-09-06 17:58 ` Toke Høiland-Jørgensen
2019-09-06 18:58 ` Rich Brown
2019-09-06 22:46 ` Toke Høiland-Jørgensen
2019-09-08 22:33 ` Rich Brown
2019-09-08 23:04 ` Toke Høiland-Jørgensen
2019-09-09  0:06 ` Rich Brown
2019-09-09 12:25 ` Toke Høiland-Jørgensen
2019-09-09 15:07 ` Rich Brown
2019-09-09 15:10 ` Rich Brown
2019-09-09 15:13 ` Rich Brown
2019-09-09 17:00 ` Toke Høiland-Jørgensen [this message]
2019-09-09 17:01 ` Toke Høiland-Jørgensen
2019-09-11 16:31 ` Toke Høiland-Jørgensen
2019-09-12 12:26 ` Rich Brown
2019-09-12 12:26 ` Rich Brown

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