svn commit: r254892 - projects/camlock/sys/dev/ahci

[Alexander Motin]

Author: mav
Date: Sun Aug 25 23:26:43 2013
New Revision: 254892
URL: http://svnweb.freebsd.org/changeset/base/254892

Log:
  With GEOM direct dispatch support there is finally a good reason to enable
  multi-vector MSI interrupts.  Single interrupt thread may have insufficient
  performance to handle completion from all ports of the controller.  At least
  on synthetic tests 6 SSDs can outperform it.

Modified:
  projects/camlock/sys/dev/ahci/ahci.c

Modified: projects/camlock/sys/dev/ahci/ahci.c
==============================================================================
--- projects/camlock/sys/dev/ahci/ahci.c	Sun Aug 25 23:16:52 2013	(r254891)
+++ projects/camlock/sys/dev/ahci/ahci.c	Sun Aug 25 23:26:43 2013	(r254892)
@@ -676,7 +676,7 @@ static int
 ahci_setup_interrupt(device_t dev)
 {
 	struct ahci_controller *ctlr = device_get_softc(dev);
-	int i, msi = 1;
+	int i, msi = 2;
 
 	/* Process hints. */
 	if (ctlr->quirks & AHCI_Q_NOMSI)