[mythtv-users] BE 2 – Remote Frontends Sluggish on FF

[Mark Perkins]

On 2 November 2017 5:43:42 am Barry Martin <barry3martin at gmail.com> wrote:

> 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:
> https://www.mythtv.org/wiki/Troubleshooting:Prebuffering_pause – 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
>
>
>
>
>
> ----------

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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