Date: Sun, 26 Apr 2015 19:22:57 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-wireless@FreeBSD.org Subject: [Bug 199718] [patch] urtwn(4): poor performance on rtl8188eu devices Message-ID: <bug-199718-21060@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199718 Bug ID: 199718 Summary: [patch] urtwn(4): poor performance on rtl8188eu devices Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: New Keywords: patch Severity: Affects Only Me Priority: --- Component: wireless Assignee: freebsd-wireless@FreeBSD.org Reporter: mp39590@gmail.com Keywords: patch Created attachment 156016 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=156016&action=edit patch r264912[1] brought initial support of rtl8188eu chips into FreeBSD, it was noted by OpenBSD developers during porting efforts that it has bad performance compared to other urtwn chips. The problem seem to be in the way the driver initialize aggregation mode: in native linux implementation USB aggregation is disabled[2] if RX DMA one is used (and it's actually used for 88 chips[3]), in FreeBSD both methods are enabled unconditionally. Attached patch boosts performance for about 10 times for me. Please review and commit if appropriate. [1] - https://svnweb.freebsd.org/base?view=revision&revision=264912 [2] - https://github.com/lwfinger/rtl8188eu/blob/master/hal/usb_halinit.c#L524 [3] - https://github.com/lwfinger/rtl8188eu/blob/master/hal/usb_halinit.c#L95 -- You are receiving this mail because: You are the assignee for the bug.
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