(loop (event-dispatch event-loop :one-shot t :timeout whatever))
event-dispatch gets called once, creates timeout A. FD event occurs, leaving A active. Call again to create timeout B, then timeout A fires leaving B. Call again to create C, B fires... Basically, accumulates a chain of unwanted timeouts for every actual socket event leading to 100% CPU utilization pretty quickly.
sionescu
commented
12 years ago
Timeouts weren't getting cleaned up. Use case:
(loop (event-dispatch event-loop :one-shot t :timeout whatever))
event-dispatch gets called once, creates timeout A. FD event occurs, leaving A active. Call again to create timeout B, then timeout A fires leaving B. Call again to create C, B fires... Basically, accumulates a chain of unwanted timeouts for every actual socket event leading to 100% CPU utilization pretty quickly.
Patch tries to address this.