iflib: ignore reclaim coalescing when low on tx descriptors
ClosedPublic
Actions

Authored by gallatin on Apr 9 2026, 11:35 PM.

Tags

None

Referenced Files

	F156494022: D56339.id175769.diff
	Thu, May 14, 2:38 AM

	F156494008: D56339.id175769.diff
	Thu, May 14, 2:38 AM

	F156470204: D56339.id.diff
	Wed, May 13, 9:46 PM

	F156465596: D56339.id175209.diff
	Wed, May 13, 9:06 PM

	Unknown Object (File)
	Sun, May 10, 10:49 PM

	Unknown Object (File)
	Sun, May 10, 7:32 AM

	Unknown Object (File)
	Sun, May 10, 7:23 AM

	Unknown Object (File)
	Fri, May 8, 8:20 PM

Subscribers

Details

Reviewers

mjg
zlei
kgalazka
sumit.saxena_broadcom.com
shurd

Group Reviewers

iflib

Commits

rG52e7958702be: iflib: ignore reclaim coalescing when low on tx descriptors

Summary

If we are low on TX descriptors, bypass iflib_txq_can_reclaim() and force a reclaim. This is intended to reduce the number of output drops under heavy load when using simple transmit.

Diff Detail

Repository

rG FreeBSD src repository

Lint

Lint Not Applicable

Unit

Tests Not Applicable

Event Timeline

gallatin created this revision.Apr 9 2026, 11:35 PM

Herald added a reviewer: shurd. · View Herald TranscriptApr 9 2026, 11:35 PM

Herald added a reviewer: iflib. · View Herald Transcript

Herald added subscribers: glebius, melifaro, ae, imp. · View Herald Transcript

gallatin requested review of this revision.Apr 9 2026, 11:35 PM

This revision was not accepted when it landed; it landed in state Needs Review.Fri, Apr 17, 5:35 PM

Closed by commit rG52e7958702be: iflib: ignore reclaim coalescing when low on tx descriptors (authored by gallatin). · Explain Why

This revision was automatically updated to reflect the committed changes.

gallatin added a commit: rG52e7958702be: iflib: ignore reclaim coalescing when low on tx descriptors.

Revision Contents
Changeset List

Path

Size

sys/

net/

iflib.c

17 lines

Diff 175769

View Options

iflib: ignore reclaim coalescing when low on tx descriptorsClosedPublicActions