PCP 8.2.0 on Pi4: very slow access to LMS tab

[MrKettle]

> How do I run the command ?
> Via command line ?

You'd have to use something like Putty to connect over SSH to the
device. Then run the command on the shell there. I don't think there's a
way to run a command through the web UI.

[MrKettle]

PCP 8.2.0 on Pi4: very slow access to LMS tab

I have a Pi4 which runs PCP 8.2 64bit as a player/server. The Pi is connected via ethernet to an internal Wifi mesh. For the last couple of days the LMS tab on the PCP web interface is essentially unobtainable (once the header is loaded it then spins for minutes at a time before loading almost each line).

I have swapped the ethernet cable and done a new install on a fresh SD card with no change in speed. All of the other tabs seem to work properly.

Any ideas what could be happening or what logs to check?

[MAAC]

I have the same problem but mine is connected via WIFI, if that matters.
I had the 8.3 version installed and the same happened.
My library consists of 300000+ tracks and 28000 albums if that matters.

Thank You for Your attention.

[Paul Webster]

SSH into the RPi and take a look at the LMS logs and also use "top" to see if something is using all CPU.
LMS logs can be seen via /var/log/slimserver/server.log

[cramcram]

Having similar problems. On my PI it takes around 20 seconds to load the LMS tab. Always loads, but always has been very slow.

[kidstypike]

Having similar problems. On my PI it takes around 20 seconds to load the LMS tab. Always loads, but always has been very slow.

Same here, slow to load (10-20 secs) been like this a goodish while now, 12 months? Used to be fairly instant.

[Paul Webster]

Just to be 100% clear ... is this discussion about the tab at the very top of the pCP screen that has a tab for each pCP player plus the LMS tab?
Not the pCP LMS settings page that is underneath the piCorePlayer banner.

If yes (the tab at the top) then do you also find the LMS web interface to be slow to load then you access it via your own new connection in your browser by opening a new tab and requesting the LMS default web interface directly?

[kidstypike]

Just to be 100% clear ... is this discussion about the tab at the very top of the pCP screen that has a tab for each pCP player plus the LMS tab?
Not the pCP LMS settings page that is underneath the piCorePlayer banner.

If yes (the tab at the top) then do you also find the LMS web interface to be slow to load then you access it via your own new connection in your browser by opening a new tab and requesting the LMS default web interface directly?

I don't use the LMS links in the pCP web GUI, for me it's the pCP LMS web page that's slow to load.

[Heuer]

RPi4 with pCP running LMS 8.2.1 (server only) here and LMS page opens immediately.

[MAAC]

RPi4 with pCP running LMS 8.2.1 (server only) here and LMS page opens immediately.

On mine it does so on a fresh installation before music scanning, but then ...

[Paul Webster]

You could try using the browser developer tools to trace the network activity to see if there is a request that takes a very long time to be responded to etc etc.

On pCP 8 - the script that is being run is
/var/www/cgi-bin/lms.cgi

It does a bunch of things and then calls pcp_lms_status to see if LMS is running.
You could put something in there to see if that is taking for ever.
Otherwise you could put some diagnostics in various places in lms.cgi to see if you can work out where it is spending its time.

[stereoptic]

I'm running PcP LMS 8.2 server and player on an Rpi 4B attached to router through ethernet. I access the PCP page using a 2017 macbook pro on 5G wifi and Chrome browser. The pcp page opens immediately. The LMS tab took 2 seconds upon 'waking', after that clicking that tab the response was immediate.

[sbp]

I have seen something like that before. Please go to tweaks page and untick the picore controls and the LMS panels.
Hit save.

[MAAC]

I have seen something like that before. Please go to tweaks page and untick the picore controls and the LMS panels.
Hit save.

RPI4 8Gb.
Picoreplayer 8.2.
350000 Tracks mostly Mp3 & Flac.
WIFI.
Server & Player installed.

Makes no difference...7 min for loading.
I had version 8.3 installed but had the same behavior.
Don't want to try with Ethernet, since I have to reinstall PCP again from scratch and wait one night for the music scan, but I will try on another card.

[mherger]

Skimming lms.cgi (takes 5s+ here) I'm seeing this candidate:

# logic to activate/inactivate buttons depending upon whether LMS cache is present or not
TMP=$(find /mnt -type d -maxdepth 3 | grep slimserver/Cache)

If you've mounted a (slow) external drive, or a share over a slow connection (wifi) this might take a while. Even more so if you have many folders at the top level of that mount. In my case find is listing all artist folders from /mnt/music. And it takes a few seconds on a "cold" system (quicker when repeated).

I have two systems with identical collection (541 folders in the top level), both connecting to a NAS using NFS:

• Pi3B+, pCP, mounting a Synology DS218j: 2-3s.
• Pi4/2GB, Raspbian, mounting a DS1517+: <1s.