[DragonFlyBSD - Bug #2346] (In Progress) System stalled with Areca ARC-1880i + MSI

[Sascha Wildner via Redmine <bugtracker-admin@xxxxxxxxxxxxxxxxxxxxx>]

Issue #2346 has been updated by Sascha Wildner.

Status changed from New to In Progress

I have mailed Areca about their recommendation re MSI.

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Bug #2346: System stalled with Areca ARC-1880i + MSI
http://bugs.dragonflybsd.org/issues/2346

Author: Francois Tigeot
Status: In Progress
Priority: Normal
Assignee: Sascha Wildner
Category: 
Target version: 


Using an Areca ARC-1880i with MSI interrupt support on recent versions of DragonFly 3.1 causes disk throughput to slow to a crawl after a while.

Processes attempting to do IO are stuck in various states, including "flstik", "clurd" or "hmrwww".

This issue has been reproduced on two separate machines with the same controller.

Disabling MSI support by setting hw.arcmsr.msi.enable=0 in /boot/loader.conf is enough to make the problem go away.


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