CAPS bug

Matthew Dillon dillon at
Mon Apr 26 09:22:23 PDT 2004

:I can't send a message larger than 128K
:Hiten helped me find it.  I have a test that showed it and fought me all day.
:include/param.h:119:#define MAXPHYS             (128 * 1024)    /* max raw I/O t

    Yes, that's a limitation.  There actually was no limitation originally
    but I moved the messaging system over to using SFBUFs so now there is.

    I really do want to make CAPS work with arbitrarily sized messages, some
    additional work needs to be done (similar to how pipes work) to allow the
    two threads to copy larger messages in 128KB chunks.


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