[exim-dev] [Bug 402] New: DomainKeys performance is awful

http://www.exim.org/bugzilla/show_bug.cgi?id=402

           Summary: DomainKeys performance is awful
           Product: Exim
           Version: 4.63
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: work:medium
          Severity: bug
          Priority: medium
         Component: Experimental
        AssignedTo: ph10@???
        ReportedBy: bugzilla.exim.simon@???
         QAContact: exim-dev@???

The domainkeys signing process reads in the message 1 byte at a time which takes
a long time on a large message. While the process of sending the message to the
domainkeys library function doesn't have to be done char by char, the reading of
it definitely doesn't need to be done in this way. Reading the message in 4096
bytes at a time and then processing it character by character speeds it up
dramatically (for a 13MB message it takes 5 seconds not 45 seconds on a k6-2 500
cpu).



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