Ubuntu Cloud Archive

eventlet.green.zmq consumes 100% cpu on writable sockets

Bug #1087105 reported by Erica Windisch
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu Cloud Archive
New
Medium
Unassigned
eventlet (Ubuntu)
New
Medium
Unassigned

Bug Description

Using eventlet.green.zmq consumes 100% CPU on writable sockets as it attempts to use a pattern for level-triggered interrupts with ZeroMQ's edge-triggered events. There is an upstream bug filed, yet unresolved. However, there is a patch that addresses the issue. The patch rewrites eventlet.green.zmq.

Revision history for this message
Erica Windisch (ewindisch) wrote :
Revision history for this message
Erica Windisch (ewindisch) wrote :

Patch has proven not to solve problem. An alternative patch exists, although more testing may be necessary.

Upstream effort is being made to resolve this problem in eventlet.

Revision history for this message
James Page (james-page) wrote :

Hi Eric

Is this the same bug as detailed in bug 1065532?

Also do you have a reference for the upstream bug report? I was not able to find it.

Changed in eventlet (Ubuntu):
importance: Undecided → Medium
Changed in cloud-archive:
importance: Undecided → Medium
Revision history for this message
Erica Windisch (ewindisch) wrote :

James: yes, this is the same as in bug 1065532.

Upstream bug:
https://bitbucket.org/which_linden/eventlet/issue/128/zeromq-fd-can-be-readable-without-being

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