4 ms·

Note that there are downsides with this method: - the startup time increases - if you run several instances of an app, they consume more memory because code u

• modeless 11y ago
  A bigger downside: various virus scanners flag UPX-packed executables as suspicious.
  • fileoffset 11y ago
    Not entirely true. Most AV will only flag 'non-standard' UPX packed executables as suspicious. Standard UPX packed binaries are easily unpacked by the scanner and the contents scanned without notifying user.
    • pilif 11y ago
      It's anecdotal of course, but a small application of ours went from about one false-positive per month to no false positive in over a year when I stopped UPX packing it.
      • SyneRyder 11y ago
        More anecdata here, but I've experienced the same thing as well (not quite as frequent as one false-positive a month though). UPX just seems to occasionally trip up the antivirus heuristic scans until you can get your application whitelisted.
• thrownaway2424 11y ago
  "whole executable file is loaded to memory at startup" might be something you were going to do anyway, if you are running a latency-sensitive service. There's nothing worse than having to page in parts of the program after it starts serving.