tracker-extract uses 1GB of RAM at idle

[Paul]

After two weeks, tracker-extract had an RSS of 0.5GB. I rebooted the system and logged back in. tracker-extract started working, and had soon consumed 1GB. It stopped extracting after a few minutes ("tracker daemon -w" shows no further activity) but keeps sitting at around 1GB resident.

Initial:
 PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
2425 0.0 1.5 2979100 517124 tty3 SNl+ Dec03 1:54 /usr/lib/tracker/tracker-extract

After reboot:
 PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
1850 9.4 3.1 4236644 1048948 tty2 SNl+ 08:36 2:35 /usr/lib/tracker/tracker-extract

~/.cache/tracker/meta.db was 46MB before the reboot, and is now 110MB.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: tracker-extract 1.10.0-1ubuntu1
ProcVersionSignature: Ubuntu 4.8.0-30.32-generic 4.8.6
Uname: Linux 4.8.0-30-generic x86_64
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: GNOME
Date: Sat Dec 17 08:52:33 2016
InstallationDate: Installed on 2016-12-02 (13 days ago)
InstallationMedia: Ubuntu-GNOME 16.10 "Yakkety Yak" - Release amd64 (20161012.1)
SourcePackage: tracker
UpgradeStatus: No upgrade log present (probably fresh install)

[dino99 (9d9)]

This is an unsupported release now. Please think to install the next LTS 'Bionic 18.04'

http://cdimage.ubuntu.com/ubuntu-next/daily-live/current/
https://www.omgubuntu.co.uk/2018/02/ubuntu-18-04-minimal-install-option