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Diffstat (limited to 'share/man/man4/iflib.4')
| -rw-r--r-- | share/man/man4/iflib.4 | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/share/man/man4/iflib.4 b/share/man/man4/iflib.4 index 2040698f0087..349fa402d319 100644 --- a/share/man/man4/iflib.4 +++ b/share/man/man4/iflib.4 @@ -1,4 +1,4 @@ -.Dd August 20, 2025 +.Dd January 7, 2026 .Dt IFLIB 4 .Os .Sh NAME @@ -94,6 +94,22 @@ If set to a non-zero value, task returns immediately and the transmit ring is serviced by a different task. This returns control to the caller faster and under high receive load, may result in fewer dropped RX frames. +.It Va tx_defer_mfree +Controls the threshold in packets before iflib will free the memory +(mbufs) for the packets that it has transmitted. +When this is nonzero, mbufs will be freed outside the transmit lock. +Setting this can reduce lock contention and CPU use when using simple_tx. +Note that this applies only when simple_tx is enabled. +.It Va tx_reclaim_thresh +Controls the threshold in packets before iflib will ask the driver +how many transmitted packets can be reclaimed. +Determining how many many packets can be reclaimed can be expensive +on some drivers. +.It Va tx_reclaim_ticks +Controls the time in ticks before iflib will ask the driver +how many transmitted packets can be reclaimed. +Determining how many many packets can be reclaimed can be expensive +on some drivers. .It Va rx_budget Sets the maximum number of frames to be received at a time. Zero (the default) indicates the default (currently 16) should be used. |