Author: np
Date: Thu Jul 4 19:15:41 2013
New Revision: 252715
URL: http://svnweb.freebsd.org/changeset/base/252715
Log:
Ring the egress queue's doorbell as soon as there are 8 or more
descriptors ready to be processed.
MFC after: 1 day
Modified:
head/sys/dev/cxgbe/t4_sge.c
Modified: head/sys/dev/cxgbe/t4_sge.c
==============================================================================
--- head/sys/dev/cxgbe/t4_sge.c Thu Jul 4 19:01:18 2013 (r252714)
+++ head/sys/dev/cxgbe/t4_sge.c Thu Jul 4 19:15:41 2013 (r252715)
@@ -1337,7 +1337,7 @@ t4_wrq_tx_locked(struct adapter *sc, str
eq->pidx -= eq->cap;
eq->pending += ndesc;
- if (eq->pending > 16)
+ if (eq->pending >= 8)
ring_eq_db(sc, eq);
wrq->tx_wrs++;
@@ -1508,8 +1508,8 @@ t4_eth_tx(struct ifnet *ifp, struct sge_
if (sgl.nsegs == 0)
m_freem(m);
doorbell:
- if (eq->pending >= 64)
- ring_eq_db(sc, eq);
+ if (eq->pending >= 8)
+ ring_eq_db(sc, eq);
can_reclaim = reclaimable(eq);
if (can_reclaim >= 32)
_______________________________________________
svn-src-head@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-head
To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
