Date: Sun, 25 Aug 2013 23:26:43 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r254892 - projects/camlock/sys/dev/ahci Message-ID: <201308252326.r7PNQhr4021791@svn.freebsd.org>
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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)
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