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Bug #3448

open

CPU allocation of MSI-X produces interrupt exhaustion

Added by Lorenzo Bivens over 8 years ago. Updated over 8 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
kernel
Start date:
2013-01-04
Due date:
% Done:

0%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:

Description

Context
  • A server with 44 NICs fails to make available more than 8 of them running SmartOS.
  • Running a different OS (linux) makes all NICs available.
  • the box is a dual Xeon E5-2630L

Diagnosis
  • `prtconf -d` shows the 44 interfaces
  • `dladm show-phys `only shows 8 of them
  • `modinfo | grep apix` say apix MPv1.4 compatible
  • /var/adm/messages has no error/failure messages
  • For mdb -k -e '::interrupts' please see attached images


Files

mdb_out_1.jpg (95 KB) mdb_out_1.jpg Lorenzo Bivens, 2013-01-04 06:28 PM
mdb_out_2.jpg (102 KB) mdb_out_2.jpg Lorenzo Bivens, 2013-01-04 06:28 PM
Actions #1

Updated by Robert Mustacchi over 8 years ago

This is happening on a system that is using the apix driver as opposed to pcplusmp. We would expect this with pcplusmp and this was one of the main motivating factors for us to go to the apix driver.

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