Date: Tue, 16 Nov 2010 20:32:09 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: cvs-src-old@freebsd.org Subject: cvs commit: src/sys/dev/re if_re.c src/sys/pci if_rlreg.h Message-ID: <201011162032.oAGKWfrI091221@repoman.freebsd.org>
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yongari 2010-11-16 20:32:09 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_8)
sys/dev/re if_re.c
sys/pci if_rlreg.h
Log:
SVN rev 215405 on 2010-11-16 20:32:09Z by yongari
MFC r215017,215025:
Follow the lead of vendor's interrupt moderation mechanism.
It seems RTL8169/RTL8168/RTL810xE has a kind of interrupt
moderation mechanism but it is not documented at all. The magic
value dramatically reduced number of interrupts without noticeable
performance drops so apply it to all RTL8169/RTL8169 controllers.
Vendor's FreeBSD driver also applies it to RTL810xE controllers but
their Linux driver explicitly cleared the register, so do not
enable interrupt moderation for RTL810xE controllers.
While I'm here sort 8169 specific registers.
Obtained from: RealTek FreeBSD driver
MFC r215025:
Only moderate TX completion interrupts. Relying on taskqueue to
suppress RX interrupts seems to give better RX performance than
RX interrupt moderation.
Revision Changes Path
1.160.2.15 +18 -0 src/sys/dev/re/if_re.c
1.97.2.7 +2 -1 src/sys/pci/if_rlreg.h
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