User profile for user: scootbak
scootbak Author
User level: Level 1
9 points

Dirty Jetsam?

What does this refer to? Something about it is constantly on my AS logs along with something 'failed'.

Nov 24, 2018 at 11:45:09 AM com.apple.xpc.launchd[1]: Unknown key for integer: _DirtyJetsamMemoryLimit

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM systemstats[73]: assertion failed: 17G3025: systemstats + 914800 [D1E75C38-62CE-3D77-9ED3-5F6D38EF0676]: 0x40

Nov 24, 2018 at 11:45:09 AM symptomsd[196]: BUG in libdispatch client: kevent[mach_recv] monitored resource vanished before the source cancel handler was invoked

Nov 24, 2018 at 11:45:09 AM xpcproxy[287]: libcoreservices: _dirhelper_userdir: 529: bootstrap_look_up returned (ipc/send) invalid destination port

Nov 24, 2018 at 11:45:11 AM com.apple.xpc.launchd[1]: Unknown key for integer: _DirtyJetsamMemoryLimit

Nov 24, 2018 at 11:45:11 AM com.apple.xpc.launchd[1]: Unknown key for integer: _DirtyJetsamMemoryLimit

Nov 24, 2018 at 11:45:11 AM com.apple.xpc.launchd[1]: Caller not allowed to perform action: seedusaged.305, action = service removal, code = 150: Operation not permitted while System Integrity Protection is engaged, uid = 501, euid = 501, gid = 20, egid = 20, asid = 100005

Nov 24, 2018 at 11:45:11 AM com.apple.xpc.launchd[1]: Unknown key for integer: _DirtyJetsamMemoryLimit

iMac, macOS High Sierra (10.13.3)

Posted on Nov 24, 2018 11:06 AM

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2 replies
User profile for user: Kurt Lang
Kurt Lang
User level: Level 9
68,976 points

Nov 24, 2018 11:14 AM in response to scootbak

Here's an explanation of the function:


Jetsam is a system that monitors memory use in OSX and iOS. It keeps a list of processes on the device, to monitor for situations where a device is running out of free RAM and look for things to kill to free up RAM. It also watches for processes that are using too much RAM; breaching a "high water mark" level.


Basically, if you don't know what you're looking for in Console, don't even bother opening it. The OS and apps spit out thousands of cryptic messages a day. Most that only mean anything to the programmer who put it there. Many that also sound like something bad is going on, but are simply meaningless.

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Dirty Jetsam?

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