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Hi Folks!<br>
<br>
Thanks for all the replies! Taking me a bit to go through and set
up what I need to test. More of a physical set up than software:
write on one computer, use another two as Backends, another for
the Frontend looking at the BEs a couple feet away! Other replies
in later messages.<br>
<br>
<br>
Reply to Mike Bibbings:
</div>
<blockquote type="cite"
cite="mid:mailman.7.1509624001.11704.mythtv-users@mythtv.org">
<blockquote type="cite">
<p style="margin-bottom: 0in; line-height: 100%">(1) Found how
to
test the NIC speed: </p>
<code class="western"> </code><code class="western"><span
lang="en-US">sudo ethtool enp4s0 | grep -i speed</span></code><span
lang="en-US"> ==> Speed: 1000Mb/s</span></blockquote>
<pre wrap="">For the NIC speed it only shows what it is capable of running at.</pre>
</blockquote>
<br>
Makes sense; I was half-hoping it would show the connect speed
(years ago did have a 10/100/1000 port which all of a sudden would
only work when plugged in to a 10/100 device).<br>
<br>
<br>
<blockquote type="cite"
cite="mid:mailman.7.1509624001.11704.mythtv-users@mythtv.org">
<pre wrap="">You could try running iperf utility to see what transfer rate you are
getting from a Frontend to each of your the backends, e.g.
on backend in a terminal run iperf -s (if not installed install it with
sudo apt install iperf) this sets up iperf? as a server.
on frontend in a terminal run iperf -c <ip address of backend>? after a
few seconds you should see something like
mike@mike-GL62-7QF:~$ iperf -c 192.168.1.22
------------------------------------------------------------
Client connecting to 192.168.1.22, TCP port 5001
TCP window size: 85.0 KByte (default)
------------------------------------------------------------
[? 3] local 192.168.1.4 port 56566 connected with 192.168.1.22 port 5001
[ ID] Interval?????? Transfer???? Bandwidth
[? 3]? 0.0-10.0 sec?? 302 MBytes?? 252 Mbits/sec
In this? case this is a result from my laptop? over wifi to a backend
connected via gigabit to my router.</pre>
</blockquote>
<br>
I get for WiFi:<br>
<style type="text/css">pre.cjk { font-family: "Courier New",monospace; }p { margin-bottom: 0.1in; line-height: 120%; }code.cjk { font-family: "Courier New",monospace; }a:link {</style><br>
<blockquote>barry@T61:~$ iperf -c 192.168.0.4 <== BE2, the
sluggish one going through commercials<br>
------------------------------------------------------------<br>
Client connecting to 192.168.0.4, TCP port 5001<br>
TCP window size: 85.0 KByte (default)<br>
------------------------------------------------------------<br>
[ 3] local 192.168.0.28 port 54444 connected with 192.168.0.4
port 5001<br>
[ ID] Interval Transfer Bandwidth<br>
[ 3] 0.0-10.1 sec 14.5 MBytes 12.1 Mbits/sec<br>
</blockquote>
<br>
and for wired (gigabyte port on T61):<br>
<blockquote>barry@T61:~$ iperf -c 192.168.0.4<br>
------------------------------------------------------------<br>
Client connecting to 192.168.0.4, TCP port 5001<br>
TCP window size: 85.0 KByte (default)<br>
------------------------------------------------------------<br>
[ 3] local 192.168.0.37 port 52734 connected with 192.168.0.4
port 5001<br>
[ ID] Interval Transfer Bandwidth<br>
[ 3] 0.0-10.0 sec 113 MBytes 95.0 Mbits/sec<br>
</blockquote>
Hmmm: seems to be a significant difference in the transfer speed.
All of the Frontends are wired and I'll continue the testing here
with the laptop plugged in (on Ethernet) to eliminate RF issues.<br>
<br>
<br>
OK, now the results for the other Backend, the one running properly:<br>
<br>
WiFi:<br>
<blockquote>
<blockquote>barry@T61:~$ iperf -c 192.168.0.13<br>
------------------------------------------------------------<br>
Client connecting to 192.168.0.13, TCP port 5001<br>
TCP window size: 85.0 KByte (default)<br>
------------------------------------------------------------<br>
[ 3] local 192.168.0.28 port 50984 connected with 192.168.0.13
port 5001<br>
[ ID] Interval Transfer Bandwidth<br>
[ 3] 0.0-10.1 sec 16.2 MBytes 13.5 Mbits/sec<br>
</blockquote>
</blockquote>
<br>
Wired:<br>
<blockquote>
<blockquote>barry@T61:~$ iperf -c 192.168.0.13<br>
------------------------------------------------------------<br>
Client connecting to 192.168.0.13, TCP port 5001<br>
TCP window size: 357 KByte (default)<br>
------------------------------------------------------------<br>
[ 3] local 192.168.0.37 port 55136 connected with 192.168.0.13
port 5001<br>
[ ID] Interval Transfer Bandwidth<br>
[ 3] 0.0-10.0 sec 114 MBytes 95.3 Mbits/sec<br>
</blockquote>
</blockquote>
<br>
To me it looks like the two Backends are essentially the same, which
I guess is good as eliminates the Backend and the connection as the
problem. (LIS, more interested in the wired -- WiFi is a different
issue.)<br>
<br>
<br>
<br>
<blockquote type="cite"
cite="mid:mailman.7.1509624001.11704.mythtv-users@mythtv.org">
<pre wrap="">Note there is also a later version of iperf iperf3 just make sure you
use the same one at both ends.</pre>
</blockquote>
Followed your instructions and installed iperf (no 3).<br>
<br>
<br>
<br>
<blockquote type="cite"
cite="mid:mailman.7.1509624001.11704.mythtv-users@mythtv.org">
<pre wrap="">------------------------------
Message: 6
Date: Wed, 1 Nov 2017 20:01:58 +0000
From: Mark Perkins <a class="moz-txt-link-rfc2396E" href="mailto:perkins1724@hotmail.com"><perkins1724@hotmail.com></a>
To: Discussion about MythTV <a class="moz-txt-link-rfc2396E" href="mailto:mythtv-users@mythtv.org"><mythtv-users@mythtv.org></a>
Subject: Re: [mythtv-users] BE 2 ? Remote Frontends Sluggish on FF
Message-ID:
<a class="moz-txt-link-rfc2396E" href="mailto:SLXP216MB01285F6B22D00B464840A12BB75F0@SLXP216MB0128.KORP216.PROD.OUTLOOK.COM"><SLXP216MB01285F6B22D00B464840A12BB75F0@SLXP216MB0128.KORP216.PROD.OUTLOOK.COM></a>
Content-Type: text/plain; charset="utf-8"
On 2 November 2017 5:43:42 am Barry Martin <a class="moz-txt-link-rfc2396E" href="mailto:barry3martin@gmail.com"><barry3martin@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Folks!
First, thanks for the assistance in the past; has resolved a lot of
issues. Hopefully can get this one resolved also, probably just
something simple I don?t understand while trying to do my own
troubleshooting.
Have two Backends ? separate IPs and passwords. Wanting to switch to the
?new and improved? Backend with better specs and before the old
Backend?s motherboard fails. The old system is ?BE1? and the
new/replacement is ?BE2?. So when a (remote) Frontend looks at BE1 (old)
it plays nice, Fast Forward through commercials is snappy, all is well.
Same Frontend on BE2 (new), playback is fine but when hit FF it sits at
3x for a second or two (same frame), then (say) 20 or 30x and the frame
is jump-pause-jump-pause ? probably takes two or three times as long to
get through commercials with the new system as the old, which has a lot
faster processor: BE2: AMD Athlon II X2 250 Processor ? dual core @
3010.387 MHz, Mythbuntu 64 bit. Did the add ppa for 0.28/
update/upgrade/reboot steps this morning; didn?t help the FF
sluggishness problem.
On the System Information page with the BE Status:
Machine Status (@ BE2) (while two shows recoding):
RAM: 15 GB total, 5.8 GB used, 9.6 (or 62%) free.
Swap: 3.7 GB, 0 KB used, 3.7 GB (or 100%) free.
What may be a little odd is exit and look at System Monitor (at Desktop)
it?s graph barely indicates any RAM usage: around 1.0 GiB of 15.4 GiB.
Running SysMon, load mythfrontend via Terminal ? exit, so SysMon still
running. (Swap is 0 bytes at 3.7 GiB.) Both cores show I guess lowish
use: right now something is recording and both cores ?wobbling? about
15-20% usage. (Later: Recording finished: now both cores idling 0 ? 4%.)
Both Backends connect to the LAN via the same switch, both are gigabyte
LANs. Have tested with four Frontends (one a Raspberry Pi 3 I?m working
on): BE1, no problem, nice and smooth; BE2, playback is fine but FF,
Rewind, and Commercial Rewind (title?) is jumpy/staccato and sluggish.
Miscellaneous thoughts:
(1) Found how to test the NIC speed:
|||sudo ethtool ||enp4s0||| grep -i speed| ==> Speed: 1000Mb/s
(2) Also found this webpage:
<a class="moz-txt-link-freetext" href="https://www.mythtv.org/wiki/Troubleshooting:Prebuffering_pause">https://www.mythtv.org/wiki/Troubleshooting:Prebuffering_pause</a> ? uhhh,
no idea. Rather ask than screw something up.
(3) Also had tried turning off the Frontend portion on the Backend (BE2)
? saw comments in the above webpage about a misconfiguration.
...OK, enough of my trying to give you folks enough information to make
informed suggestions. TIA!
Barry
----------
</pre>
</blockquote>
<pre wrap="">
Post a log file from the frontend from startup through playing a file and doing the glitching skip / ff then exit.
I assume that both BE are fixes/0.28? And that you are using the same mythfrontend install on the FE and just changing the config.xml file to swap which BE pointing to?
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Message: 7
Date: Wed, 1 Nov 2017 19:20:13 -0500
From: Barry Martin <a class="moz-txt-link-rfc2396E" href="mailto:barry3martin@gmail.com"><barry3martin@gmail.com></a>
To: <a class="moz-txt-link-abbreviated" href="mailto:mythtv-users@mythtv.org">mythtv-users@mythtv.org</a>
Subject: [mythtv-users] BE 2 ? Remote Frontends Sluggish on FF
Message-ID: <a class="moz-txt-link-rfc2396E" href="mailto:9f99e78a-d2c3-4836-5bf7-a55f955b1ce5@gmail.com"><9f99e78a-d2c3-4836-5bf7-a55f955b1ce5@gmail.com></a>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Hi Folks!
Follow-up to my earlier post; Machine Status is reporting an earlier
issue which I didn't mention? (thought maybe the reboot would fix):
??? ??? Uptime:??? 9:09:50??? ??? Load:? 0.38, 0.19, 0.07
??? ??? RAM:??? ??? 15 GB total, 15 GB used, 195 MB (or 1.23%) free
??? ??? Swap:??? ??? 3.7 GB total, 6.0 MB used, 3.7 GB (or 100%) free
The 100% usage of the RAM won't go away once it hit sthis level, and I
have no idea what causes.? (Suppose there's a log to look at -- will
need to be activated and what to look for to post.)
Not seeing any difference in how the FF/Rewind issue responds.
Back at the Desktop System Monitor is reporting both cores at about 7 -
20% usage -- show is recording.
??? ??? RAM:??? 1.1 GiB (6.9%) of 15.4 GiB
??? ??? Swap:??? 7.4 MiB 0.2%) of 3.7 GiB
(So if some Swap was used does that mean at one time something
'overflowed' by 16 GB of RAM??
Thanks again.? As you can probably tell I have no idea what to look for!
Barry
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------------------------------
Message: 8
Date: Thu, 2 Nov 2017 11:25:51 +1100
From: Mike Holden <a class="moz-txt-link-rfc2396E" href="mailto:mikeholden99+mythtv@gmail.com"><mikeholden99+mythtv@gmail.com></a>
To: Discussion about MythTV <a class="moz-txt-link-rfc2396E" href="mailto:mythtv-users@mythtv.org"><mythtv-users@mythtv.org></a>
Subject: Re: [mythtv-users] BE 2 ? Remote Frontends Sluggish on FF
Message-ID:
<a class="moz-txt-link-rfc2396E" href="mailto:CAKfgc2LzP6EDTpcKOjjhM2hnHEFeV6btraXbkJ5Ro-AO2mD3JA@mail.gmail.com"><CAKfgc2LzP6EDTpcKOjjhM2hnHEFeV6btraXbkJ5Ro-AO2mD3JA@mail.gmail.com></a>
Content-Type: text/plain; charset="utf-8"
On 2 November 2017 at 11:20, Barry Martin <a class="moz-txt-link-rfc2396E" href="mailto:barry3martin@gmail.com"><barry3martin@gmail.com></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">
Hi Folks!
Follow-up to my earlier post; Machine Status is reporting an earlier issue
which I didn't mention (thought maybe the reboot would fix):
Uptime: 9:09:50 Load: 0.38, 0.19, 0.07
RAM: 15 GB total, 15 GB used, 195 MB (or 1.23%) free
Swap: 3.7 GB total, 6.0 MB used, 3.7 GB (or 100%) free
The 100% usage of the RAM won't go away once it hit sthis level, and I
have no idea what causes. (Suppose there's a log to look at -- will need
to be activated and what to look for to post.)
</pre>
</blockquote>
<pre wrap="">
RAM will be used for disk cache if there is any free. Use "top" or "free"
commands to get a bit more info on this.
Nothing to worry about if this is the case, it's normal behaviour to speed
up your machine
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------------------------------
Message: 9
Date: Thu, 02 Nov 2017 16:08:12 +1300
From: Stephen Worthington <a class="moz-txt-link-rfc2396E" href="mailto:stephen_agent@jsw.gen.nz"><stephen_agent@jsw.gen.nz></a>
To: Discussion about MythTV <a class="moz-txt-link-rfc2396E" href="mailto:mythtv-users@mythtv.org"><mythtv-users@mythtv.org></a>
Subject: Re: [mythtv-users] BE 2 ? Remote Frontends Sluggish on FF
Message-ID: <a class="moz-txt-link-rfc2396E" href="mailto:pd1lvc18fgg6jt8bkpa7c5m9np3lmf639r@4ax.com"><pd1lvc18fgg6jt8bkpa7c5m9np3lmf639r@4ax.com></a>
Content-Type: text/plain; charset=ISO-8859-1
On Wed, 1 Nov 2017 14:01:44 -0500, you wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Folks!
First, thanks for the assistance in the past; has resolved a lot of
issues. Hopefully can get this one resolved also, probably just
something simple I don?t understand while trying to do my own
troubleshooting.
Have two Backends ? separate IPs and passwords. Wanting to switch to the
?new and improved? Backend with better specs and before the old
Backend?s motherboard fails. The old system is ?BE1? and the
new/replacement is ?BE2?. So when a (remote) Frontend looks at BE1 (old)
it plays nice, Fast Forward through commercials is snappy, all is well.
Same Frontend on BE2 (new), playback is fine but when hit FF it sits at
3x for a second or two (same frame), then (say) 20 or 30x and the frame
is jump-pause-jump-pause ? probably takes two or three times as long to
get through commercials with the new system as the old, which has a lot
faster processor: BE2: AMD Athlon II X2 250 Processor ? dual core @
3010.387 MHz, Mythbuntu 64 bit. Did the add ppa for 0.28/
update/upgrade/reboot steps this morning; didn?t help the FF
sluggishness problem.
</pre>
</blockquote>
<pre wrap="">
Why on earth would you be using fast-forward to skip commercials? That
is the old, slow way of doing it, inherited from VCRs. Some STBs
still only allow doing it that way, due to pressure from the
advertisers. But in MythTV you just use the skip forward with the
arrow keys. I have it set up so that I get 30 seconds skip on each
right arrow or left arrow, but when I am already skipping forward on
the right arrow, if I skip backwards on the left arrow it only skips
10 seconds back. Using that, I can skip forwards as many times as I
need to skip the commercials and see program again. Then I skip back
until I see commercials again and let it play from there. All that is
extremely rapid and easy compared to using fast forwarding.
To get the 10 s back skip after forward skip, there is a setting
somewhere - it might be the default now. I can not remember exactly
where it is. If you set the option (v29) Setup > Video > Playback >
Seeking > Smart fast forwarding, that might be it, but it does not
look quite right. And I also seem to have lost where the settings are
for the skip sizes, but I believe 30 s is the default.
There is also an option in mythfrontend to skip forwards and backwards
by a specified number of minutes. Just type the number of minutes (eg
4 or 5 for a commercial break) and the arrow key for the direction
required.
------------------------------
Message: 10
Date: Thu, 2 Nov 2017 15:01:01 +1100
From: Mike Holden <a class="moz-txt-link-rfc2396E" href="mailto:mikeholden99+mythtv@gmail.com"><mikeholden99+mythtv@gmail.com></a>
To: <a class="moz-txt-link-abbreviated" href="mailto:stephen@jsw.gen.nz">stephen@jsw.gen.nz</a>, Discussion about MythTV
<a class="moz-txt-link-rfc2396E" href="mailto:mythtv-users@mythtv.org"><mythtv-users@mythtv.org></a>
Subject: Re: [mythtv-users] BE 2 ? Remote Frontends Sluggish on FF
Message-ID:
<a class="moz-txt-link-rfc2396E" href="mailto:CAKfgc2K-BNnV2_PiVE3MP0YVKsWd98gcQdGqvbRQv6mt4QzF=Q@mail.gmail.com"><CAKfgc2K-BNnV2_PiVE3MP0YVKsWd98gcQdGqvbRQv6mt4QzF=Q@mail.gmail.com></a>
Content-Type: text/plain; charset="utf-8"
On 2 November 2017 at 14:08, Stephen Worthington <a class="moz-txt-link-rfc2396E" href="mailto:stephen_agent@jsw.gen.nz"><stephen_agent@jsw.gen.nz></a>
wrote:
</pre>
<blockquote type="cite">
<pre wrap="">On Wed, 1 Nov 2017 14:01:44 -0500, you wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Folks!
First, thanks for the assistance in the past; has resolved a lot of
issues. Hopefully can get this one resolved also, probably just
something simple I don?t understand while trying to do my own
troubleshooting.
Have two Backends ? separate IPs and passwords. Wanting to switch to the
?new and improved? Backend with better specs and before the old
Backend?s motherboard fails. The old system is ?BE1? and the
new/replacement is ?BE2?. So when a (remote) Frontend looks at BE1 (old)
it plays nice, Fast Forward through commercials is snappy, all is well.
Same Frontend on BE2 (new), playback is fine but when hit FF it sits at
3x for a second or two (same frame), then (say) 20 or 30x and the frame
is jump-pause-jump-pause ? probably takes two or three times as long to
get through commercials with the new system as the old, which has a lot
faster processor: BE2: AMD Athlon II X2 250 Processor ? dual core @
3010.387 MHz, Mythbuntu 64 bit. Did the add ppa for 0.28/
update/upgrade/reboot steps this morning; didn?t help the FF
sluggishness problem.
</pre>
</blockquote>
<pre wrap="">
Why on earth would you be using fast-forward to skip commercials? That
is the old, slow way of doing it, inherited from VCRs.
</pre>
</blockquote>
<pre wrap="">
True, but not really the point. FF/REW should still work, regardless of why
it is being used.
The other thought I had was whether there was an issue in the seektable?
Check your database for crashed tables - plenty of tutorials and previous
posts on this, so a Google exercise for you!
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</pre>
</blockquote>
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