Messages in this thread |  | | From | (J. Richard Sladkey) | Subject | Re: Big malloc's. | Date | 13 Feb 1997 05:55:32 +0000 |
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John Carter <john@dwaf-hri.pwv.gov.za> writes:
> How do I write a program that will ask the kernel how much free > physical memory there is available to me without causing a lot of > swapping?
In "the old days" experiments showed that the syscall overhead was negligibly different for 8k I/O buffers vs. 64k buffers. Nowadays you can just use 1M buffers and assume the system can deal with it. Can you really show that operating on 8M buffers gives you noticably better performance than 1M buffers?
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