Linux: When to use scatter/gather IO (readv, writev) vs a large buffer with fread
In scatter and gather (i.e. readv and writev), Linux reads into multiple buffers and writes from multiple buffers. If say, I have a vector of 3 buffers, I can use readv, OR I can use a single buffer, which is of combined size of 3 buffers and do fread. Hence, I am confused: For which cases should scatter/gather be used and when should a single large buffer be used?
slime doesn't work in emacs24
I use emacs24 in archlinux.If i use the slime packages from marmalade.org,then when i use M-x slime the error is: debugger invoked on a SB-INT:SIMPLE-FILE-ERROR in thread #<THREAD "initial thread" RUNNING {AB007A9}>: Couldn't load "/home/sinners/.emacs.d/elpa/slime-20100404.1/swank-loader.lisp": file does not exist. Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL. restarts (invokab
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