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Am 01.08.2018 um 20:43 schrieb Paul Archer:<br>
<blockquote type="cite"
cite="mid:%3CCAOakDgzVG4=SB+8z1xOpOMuUn071um+SFm7EFuWDWKZZ8ShbDw@mail.gmail.com%3E">
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<div dir="ltr">I'm on gig ethernet. But before the upgrade the
wait time was typically 2 seconds, and now it's 8, so the
problem doesn't lie (just) in the network.<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Aug 1, 2018 at 12:37 PM, George
Poulson <span dir="ltr"><<a
href="mailto:george.poulson@gmail.com" target="_blank"
moz-do-not-send="true">george.poulson@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="auto">What speed is the network between your front
and backend?
<div dir="auto">I recently changed from remote frontend
(on 100mb/s ethernet) to local and the original 1 or 2
second 'Please Wait' is now barely perceptible. </div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr">On Wed, 1 Aug 2018, 17:20 Paul Archer, <<a
href="mailto:paul@paularcher.org" target="_blank"
moz-do-not-send="true">paul@paularcher.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">
<div>That made some difference, although not a huge
amount. <br>
</div>
<div>I'm seeing variations from one frontend to
another, so I'm suspecting it is on the frontend
side rather than the backend.<br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Wed, Aug 1, 2018 at 10:30
AM, Jay Foster <span dir="ltr"><<a
href="mailto:jayf0ster@roadrunner.com"
rel="noreferrer" target="_blank"
moz-do-not-send="true">jayf0ster@roadrunner.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div
class="m_-2637936322667918825m_-3673011356157749238m_-7867565673939753151moz-cite-prefix">On
8/1/2018 5:20 AM, Paul Archer wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">No, my drives are active. I get
the 8 seconds even after starting a
recording, immediately backing out, and
starting it again.<br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Jul 31,
2018 at 8:57 PM, Stephen Worthington <span
dir="ltr"><<a
href="mailto:stephen_agent@jsw.gen.nz"
rel="noreferrer" target="_blank"
moz-do-not-send="true">stephen_agent@jsw.gen.nz</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div
class="m_-2637936322667918825m_-3673011356157749238m_-7867565673939753151HOEnZb">
<div
class="m_-2637936322667918825m_-3673011356157749238m_-7867565673939753151h5">On
Tue, 31 Jul 2018 19:41:15 -0500, you
wrote:<br>
<br>
>My backend system recently died,
and as part of the replacement, I
decided<br>
>to upgrade from Ubuntu 16.04 and
mythtv 0.28 to Ubuntu 18.04 and
mythtv 29.<br>
>Since then I've had several
issues. I ironed most of them out,
but two<br>
>linger:<br>
>1) The time between starting
playback of a recording and that
recording<br>
>actually playing (when it says
"Please Wait") is about 8 seconds.
It used<br>
>to be about 2 or so.<br>
>2) When exiting the "Watch
Recordings" screen, the frontend
will hang for<br>
>about two minutes or so,
sometimes longer (it has taken over
5 minutes, at<br>
>which time the WAF got so low I
had to restart the frontend rather
than<br>
>wait it out).<br>
><br>
>I've enabled debug-level logging
on the front end, but I get
literally<br>
>nothing while it waits. I've
checked the backend logs as well,
but I've<br>
>seen nothing useful there. I've
done some searches in the mailing
list<br>
>archive, but haven't come up
with anything there either.<br>
><br>
>Any ideas? Logs to look at,
settings to check?<br>
><br>
>Thanks,<br>
><br>
>Paul<br>
<br>
</div>
</div>
The start playing time could be a hard
drive that has to spin up. You<br>
can use hdparm to see the state of a
drive:<br>
<br>
root@mypvr:~# hdparm -C
/dev/disk/by-label/rec1<br>
<br>
/dev/disk/by-label/rec1:<br>
drive state is: active/idle<br>
root@mypvr:~# hdparm -C
/dev/disk/by-label/vid3<br>
<br>
/dev/disk/by-label/vid3:<br>
drive state is: standby<br>
<br>
I have never met your long timeout to
exit "Watch Recordings", but I<br>
am still using 16.04 with v29.<br>
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</blockquote>
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</pre>
</blockquote>
I don't know about the long delay when exiting
Watch Recordings, but I have experienced long
delays in starting a recording playback. Over
time, this delay would get longer and longer.
What I found that seems to help is the <a
href="http://optimize_mythdb.pl"
rel="noreferrer" target="_blank"
moz-do-not-send="true">optimize_mythdb.pl</a>
script (<a
class="m_-2637936322667918825m_-3673011356157749238m_-7867565673939753151moz-txt-link-freetext"
href="https://www.mythtv.org/wiki/Optimize_mythdb.pl" rel="noreferrer"
target="_blank" moz-do-not-send="true">https://www.mythtv.org/wiki/<wbr>Optimize_mythdb.pl</a>).<span
class="m_-2637936322667918825m_-3673011356157749238HOEnZb"><font
color="#888888"><br>
Jay<br>
</font></span></div>
<br>
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<br>
</div>
</blockquote>
I encountered a real long delay as well, when starting playback of
recordings on my brand new installation. The frontend even crashed
once. But I skipped investigating on this issue at that time,
because there were other things to set up.<br>
Later on, this delay was gone and it never came back .... well,
there were a few exceptions where it hung again and crashed
afterwards (or was killed by me, because I didn't wanted to wait).
But this occurred rarely only.<br>
<br>
So definitely a bit of an increased weakness, compared to the old
system, but definitely not a problem as you encounter.<br>
<br>
An additional laggy behaviour of the frontend occurred to me, when
the metadata were fetched in background for all the contents of the
video section. This was kind of confusing, as the corresponding
logfile entries were written after a delay only.<br>
I am not sure about this, but maybe background activity like this
caused my delays at the beginning.<br>
<br>
Are there any background activities of your frontend? Maybe
something fails and is repeated again and again?<br>
I know you told of no log entries _at the time of your delays_, but
maybe there are delayed entries for you as well, that may correspond
to background activities that were running for a while?<br>
<pre class="moz-signature" cols="72">--
Nicolas
MythTV Version : v29.1-22-g675676b
Ubuntu 18.04 LTS (4.15.0-23-generic)
Digital Devices GmbH Octopus DVB Adapter via ddbridge kernel module
15c2:0036 SoundGraph Inc. LC16M VFD Display/IR Receiver (imon) via ir-keytable
VGA compatible controller: Intel Corporation Device 3e91 (Intel(R) Core(TM) i3-8100T)</pre>
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