Showing the contents of long saved playlists is very slow

[nis65]

... and causes the mpd daemon to be at 100% CPU for multiple minutes, making all interactions through ampd very slow too.

And to make things worse, as this is a web application the ampd server does not see that the user closed the tab or switched to a different view, so the whole request is still being handled (and keeping mpd at 100% CPU time) even if nobody cares about the result any more.

As you wrote here:

That's because for every entry in the playlist, javampd sends a query to the MPD database

I think this is wrong and not necessary. According to man mpc, the mpd protocol supports requesting all information about all songs in a stored playlists in one go:

mpc -h MY_MPD_HOST --format "%file% - %name% - %artist% - %album% - %albumartist% - %comment% - %composer% - %date% - %originaldate% - %disc% - %genre% - %performer% - %title% - %track% - %time% - %file% - %position% - %id% - %prio% - %mtime% - %mdate% - %audioformat%" my_saved_playlist_name

This is quite fast when getting my playlist with over 1000 entries.

In addition, when I just want to delete a playlist (without actually wanting to see its content), that happens too. So I can't delete multiple playlists quickly...

[rain0r]

Hey there,

I know that the current implementation has room for improvement. But at that point, ampd relies on the library javampd where I already openend an issue.

[nis65]

ampd relies on the library javampd where I already openend an issue.

Thanks for tracking this there :-)