#5278: On modern fedora 64 installs, sage exists frequently when omalloc thinks
there is no memory left
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Reporter: was | Owner: cwitty
Type: defect | Status: new
Priority: blocker | Milestone: sage-3.3
Component: misc | Resolution:
Keywords: |
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Comment (by cwitty):
> The first thing that is suspicious is that OM_MALLOC_FROM_SYSTEM is
called, fails, and then is called again... for no reason. That is very
hackish code.
I expect the idea is that OM_MEMORY_LOW_HOOK empties caches, etc., to free
up memory before it tries again. That seems like a good idea in theory; I
have no idea if it actually does anything in Singular.
Also, if it thinks it's trying to allocate memory using sbrk, it may also
think that it can free memory using sbrk, so this might have introduced a
memory leak. (If so, it may still be a good temporary fix... memory leaks
are better than immediate crashes, IMHO.)
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5278#comment:3>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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