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Re: Why does free() take 1,100 microseconds?

Subject: Re: Why does free() take 1,100 microseconds?
From: Jan Brittenson <email@hidden>
Date: Wed, 27 Jul 2005 01:41:32 -0700
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neal olander wrote:

What could free() be doing that could possibly take 1,100 microseconds, and is there any thing I can do to reduce that time?


Perhaps it's paging?

Try not to free it but reuse the same buffer instead. Allocate it not with malloc, but with vm_allocate, then vm_wire it. This avoids paging and bypasses the global malloc lock. It also gives you a nice page-aligned buffer that you can then slice and dice any way you want (e.g. for cache coloring).

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	>Re: Why does free() take 1,100 microseconds? (From: "neal olander" <email@hidden>)

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