On 04/08/2013 07:43 PM, Jamie Strandboge wrote: > Recent kernels/glibc also now trigger reads for > /proc/sys/vm/overcommit_memory. This is explained in both malloc(3) and > proc(5). Basically, there are different memory allocation strategies and > /proc/sys/vm/overcommit_memory contains the 'virtual memory accounting' > mode. The update for the base abstraction gives read access to this file. >
Here is the glibc commit: http://sourceware.org/git/?p=glibc.git;a=commit;h=9fab36eb583c0e585e83a01253299afed9ea9a11 Basically, glibc adjusts its malloc behavior based on the value of /proc/sys/vm/overcommit_memory, which is why the read is needed. -- Jamie Strandboge http://www.ubuntu.com/
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