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Remove fragmentation profile#405

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test_951115964
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Remove fragmentation profile#405
copybara-service[bot] wants to merge 1 commit into
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test_951115964

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Remove fragmentation profile

The fragmentation profile is not useful in the current form.
The proxy allocation stacks are not correlated and are not the cause
of external fragmentation. They are just random objects of a particular
size class.
We don't see that these profiles are used in practice.
External fragmentation of more of a global tcmalloc property that depends
on CFL span prioritization, etc. The information about external fragmentation
is available in a more complete form in mallocz CFL info, and if necessary
can be crossed with heapz for representative stacks.

The fragmentation profile is not useful in the current form.
The proxy allocation stacks are not correlated and are not the cause
of external fragmentation. They are just random objects of a particular
size class.
We don't see that these profiles are used in practice.
External fragmentation of more of a global tcmalloc property that depends
on CFL span prioritization, etc. The information about external fragmentation
is available in a more complete form in mallocz CFL info, and if necessary
can be crossed with heapz for representative stacks.

PiperOrigin-RevId: 951115964
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google-cla Bot commented Jul 20, 2026

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