Resolved High memory usage by lsd

[h9826790]

Is there anyone seen this before?

lsd (Launch Service Deamon) keep chewing up memory. I just recognise this 2-3 weeks ago. Not 100% when this started.

Reported to Apple with sysdiagnosis etc but no reply yet (anyway, it seems no more bugreport.com, it redirect me the feedback assistant, which I doubt anyone will look at the case).

Today, lsd go up to almost 25GB memory usage in less than 3 hours after cold boot. The memory pressure still reasonably low (most likely because I have 48GB of RAM), SWAP still zero, but have few GB compressed memory already.

Any idea how / where to find out the issue? Million thanks in advance.

 

[h9826790]

Problem fixed.

Just three steps.

1) create a folder for Launch Service Daemon to store database.

sudo mkdir /private/var/db/lsd

2) Kill the old database and create a new one

sudo /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -seed -lint -r -f -v -dump -domain local -domain system -domain user -domain network

3) Reboot, or simply quit the lsd (root) in Activity Monitor

Update:
For those who has multiple boot drive. I found that this bug also related to those duplicate / extra apps stored in other drives. So, before step 1. It's better to put all other boot drives in the System Preferences -> Spotlight -> Privacy section.