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authorSiri Hansen <[email protected]>2011-08-29 15:58:45 +0200
committerSiri Hansen <[email protected]>2011-08-30 09:51:35 +0200
commit7ee8080d1127b30c935dfd896a8e78b3a34ee176 (patch)
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parent9a52e239698ae62cddbc0d780502c72458867b6f (diff)
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Improve performance of upgrade when many processes have old code
This commit utilizes the new bif erlang:check_old_code/1 to check if a module has old code in the system or not before running erlang:check_process_code/2. This is to optimize release_handler:install_release (and release_handler:check_install_release). A new test is added which checks that after traversing all processes/modules once and purging all old code, the second run through this part of the code is "sufficiently" much faster. A note is also added in the reference manual for release_handler:install_release about how to go around the efficiency problem of this function.
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