[DragonFlyBSD - Bug #2542] Kernel freezes for minutes at a time

[John Marino via Redmine <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>]

Issue #2542 has been updated by marino.


As an interested 3rd party, does "vm.read_shortcut_enable=1=freeze" imply where the problem lies?  And do we know why this phenomenon (apparently) is not seen universally?
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Bug #2542: Kernel freezes for minutes at a time
http://bugs.dragonflybsd.org/issues/2542

Author: ftigeot
Status: New
Priority: Normal
Assignee: 
Category: 
Target version: 


Running the new poudriere-devel 2.3_4 port makes the system freeze for minutes at a time after a while.

* This is not the case at first, poudriere has to run for at least one hour for this phenomenon to become visible
* Display is frozen in place, periodically refreshed widgets such as clocks stop moving
* Keyboard and mouse input is not processed but is handled after a few minutes when the system becomes operational again
* Launching big applications such as firefox is enough to make the system freeze
* "Warning: deep namecache recursion at (null)" messages are printed on the console

When the system becomes operational again, top(1) shows one cpu thread using 100% cpu (system time).

A core dump taken when the system is in this state will be made available.


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