[RFC PATCH 2/4] makedumpfile: Add partial bitmap for cyclic.

HATAYAMA Daisuke d.hatayama at jp.fujitsu.com
Sun Jun 3 23:19:57 EDT 2012


From: Atsushi Kumagai <kumagai-atsushi at mxc.nes.nec.co.jp>
Subject: [RFC PATCH 2/4] makedumpfile: Add partial bitmap for cyclic.
Date: Thu, 31 May 2012 14:01:03 +0900

>  /*
> + * For cyclic
> + */
> +#define BUFSIZE_CYCLIC	        (8192)
> +#define PFN_CYCLIC		(BUFSIZE_CYCLIC * BITPERBYTE)
> +
> +
> +/*
>   * Minimam vmcore has 2 ProgramHeaderTables(PT_NOTE and PT_LOAD).

How did you choose this buffer size? Best performance? I think the
performacne varies according to this buffer size, and to evaluate it,
it's useful to be able to specify the size through command-line.

Thanks.
HATAYAMA, Daisuke




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