Michael S. Tsirkin ec56dc0b7f IPoIB/cm: Fix performance regression on Mellanox ... commit 518b1646 ("IPoIB/cm: Fix SRQ WR leak") introduced a severe performance regression on Mellanox cards, because keeping a QP in the error state for extended periods of time moves hardware to the slow path (until the QP is destroyed). For example, MPI latency goes from ~3 usecs to ~7 usecs. Fix this by posting a send WR on one of the QPs that are being flushed, instead of using a separate drain QP that is kept in the error state. This fixes bug <https://bugs.openfabrics.org/show_bug.cgi?id=636>, reported and bisected by Scott Weitzenkamp at Cisco and debugged by Sasha Mikheev at Voltaire. Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>		2007-05-29 16:07:09 -07:00
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ipoib	IPoIB/cm: Fix performance regression on Mellanox	2007-05-29 16:07:09 -07:00
iser	header cleaning: don't include smp_lock.h when not used	2007-05-08 11:15:07 -07:00
srp	IB: Add CQ comp_vector support	2007-05-06 21:18:11 -07:00