Date: Wed, 06 Aug 2014 20:38:33 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 192452] New: vt_vga very slow since r269471 Message-ID: <bug-192452-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=192452 Bug ID: 192452 Summary: vt_vga very slow since r269471 Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: Needs Triage Severity: Affects Many People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: nwhitehorn@FreeBSD.org The VGA driver has become unusably slow since r269471. I suspect that the support for non-8x8 fonts has dramatically increased the incidence of reads from VGA memory. It might be best if the driver could be refactored to avoid reads entirely, for example by passing some concept of write granularity up from the driver into the vt core so that vd_bitbltchr() is called only for operations of that width (redrawing partial characters). -- You are receiving this mail because: You are the assignee for the bug.
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