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[bug #42288] limit parallelism based on available memory

From: Paul D. Smith
Subject: [bug #42288] limit parallelism based on available memory
Date: Sun, 12 May 2019 16:21:43 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0

Follow-up Comment #3, bug #42288 (project make):

Limiting jobs based on available memory, like -l but for memory, would be
significantly less complicated than the original request of expressing how
much memory a recipe might consume and having make defer running recipes that
are too large and instead choose recipes which fit.

However, even though a "memory limit" feature is more straightforward to
implement it still has many issues that need to be resolved before it can be
implemented: primarily, how do we measure memory used (or probably more
reasonably, memory still available)?  And how to do it portably?


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