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
..
ipoib_cm.c	IPoIB/cm: Fix performance regression on Mellanox	2007-05-29 16:07:09 -07:00
ipoib_fs.c	[PATCH] mark struct file_operations const 3	2007-02-12 09:48:45 -08:00
ipoib_ib.c	IPoIB/cm: Drain cq in ipoib_cm_dev_stop()	2007-05-24 14:02:40 -07:00
ipoib_main.c	IPoIB: Handle P_Key table reordering	2007-05-19 08:51:54 -07:00
ipoib_multicast.c	IB/ipoib: Fix typos in error messages	2007-05-21 13:29:15 -07:00
ipoib_verbs.c	IPoIB/cm: Fix SRQ WR leak	2007-05-21 13:35:40 -07:00
ipoib_vlan.c
ipoib.h	IPoIB/cm: Fix performance regression on Mellanox	2007-05-29 16:07:09 -07:00
Kconfig
Makefile