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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 42065] New: - EnableSendFile can slow file transfers on Windows
Date Fri, 06 Apr 2007 14:47:25 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=42065

           Summary: EnableSendFile can slow file transfers on Windows
           Product: Apache httpd-2
           Version: 2.0.59
          Platform: Other
        OS/Version: Windows Server 2003
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Core
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: frank.mccreedy@nrlssc.navy.mil


We run Apache 2.0.59 (32 bit .exe) on Windows 2003 Server Enterprise Edition 64
Bit.  When EnableSendFile is enabled (the default) file transfers can be slow. 
For instance, on our gigabit lan, the file transfer would average around 300
kB/s.  This only seemed to affect HTTP file transfers.  HTTPS would be normal
speed.  This bug only affected a few machines on the lan (we don't know why-
maybe some timing issue?).  Once EnableSendFile was turned off the file transfer
would go at 11 mB/s.  

The file transfer client was running Windows XP (booting a Ubuntu live cd didn't
seem to have the problem on the same hardware).

Maybe EnableSendFile could be off by default for the win32 source...

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