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On 7/5/18 10:13, Gary E. Miller wrote:<br>
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cite="mid:20180705101315.7cdfe5f4@spidey.rellim.com">
<pre class="moz-quote-pre" wrap="">Yo Paul!
On Thu, 5 Jul 2018 09:53:05 -0700
Paul Theodoropoulos <a class="moz-txt-link-rfc2396E" href="mailto:paul@anastrophe.com"><paul@anastrophe.com></a> wrote:
</pre>
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<pre class="moz-quote-pre" wrap="">You are runnning USB on a timekeeping RasPi? I stopped doing that
when I noticed it wrecked havok with my measurements. Unplug!
</pre>
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<pre class="moz-quote-pre" wrap="">I attach a microSD card in a USB adapter in order to perform backups,
but I do only intermittently - every few days to a week or so. I
could probably leave it attached to the ntpVIZ Raspi 1 and rsync over
the LAN though; I should probably do that, then I can back up on a
more formal schedule.
</pre>
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That's unrelated to your issue, the timescale is very different.
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Right - however, it does make much better general administration
sense than randomly plugging in an adapter to make backups. Backups
nightly via rsync is the only rational path.<br>
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cite="mid:20180705101315.7cdfe5f4@spidey.rellim.com">
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<pre class="moz-quote-pre" wrap="">Of course the ethernet goes through USB on the RasPi, so minimize
ethernet usage too.
</pre>
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<pre class="moz-quote-pre" wrap="">Latency, jitter, etc, are terrible over wifi, and I have pretty good
wifi.
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Yup. I avoid the WiFi on RasPis if at all possible.
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Well, I just looked up the specs on the raspi 3 B+, and apparently
the wifi has been bumped up in spec quite a bit compared to my old
raspi 1, so I should at least test it out and see. <br>
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cite="mid:20180705101315.7cdfe5f4@spidey.rellim.com">
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<pre class="moz-quote-pre" wrap="">When I monitor the netdata graphs in realtime over the WAN,
there's no visible change to the metrics, and that generates a lot of
https traffic, so I don't think that's it.
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Is your WAN on WiFi or Ethernet?</pre>
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Connection from raspi to wan is ethernet, one switch between it and
the gateway device. <br>
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cite="mid:20180705101315.7cdfe5f4@spidey.rellim.com">
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<pre class="moz-quote-pre" wrap="">That said, latency and jitter were terrible when I first got my raspi
1 a couple of years ago; I've never tried it on the 3, so perhaps
wifi on the raspi 3 might not suffer those issues; I will have to
look into that. It'd be nice to be able to untether the little devil
anyway, so I could easily relocate it elsewhere in the house where
ambient temps might be smoother. I will check it out!
</pre>
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WiFi ethernet extenders are now cheap.</pre>
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Right, I have a couple already, but I do have couple of locations
close to the main AP that I can try it out. I'll give this all a
whirl later this afternoon. Thanks Gary!<br>
<br>
<pre class="moz-signature" cols="72">--
Paul Theodoropoulos
<a class="moz-txt-link-abbreviated" href="http://www.anastrophe.com">www.anastrophe.com</a></pre>
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