From owner-cvs-all  Wed Oct 20 11:19:33 1999
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From: Bill Paul <wpaul@FreeBSD.org>
Date: Wed, 20 Oct 1999 11:19:27 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/pci if_xl.c if_xlreg.h
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wpaul       1999/10/20 11:19:27 PDT

  Modified files:        (Branch: RELENG_3)
    sys/pci              if_xl.c if_xlreg.h 
  Log:
  MFC: merge in performance enhancements from -current for 3c90xB cards.
  The transmit strategy for cards with post-"boomerang" ASICs now uses
  descriptor polling, which reduces CPU overhead. I can now saturate a
  full duplex 100Mbps link in both directions at once with a pair of
  3c905B cards, and can achieve slightly better overall TCP speed than
  before (11.3MB/sec before compared to 11.57MB/sec now). UDP transmit
  performance is up around 11.7MB/sec.
  
  This only affects the 3c905B, 3c900B, 3c905C, 3c980, 3c980B, 3c980C
  and 3cSOHO100-TX NICs. The original 3c905 and 3c900 cards still use the old
  transmit strategy as they don't support the transmit descriptor polling
  feature.
  
  Revision  Changes    Path
  1.22.2.22 +309 -74   src/sys/pci/if_xl.c
  1.9.2.9   +19 -2     src/sys/pci/if_xlreg.h



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