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Re: [Nmh-workers] Limit of 27 messages sequences per folder

From: Paul Vixie
Subject: Re: [Nmh-workers] Limit of 27 messages sequences per folder
Date: Wed, 27 Mar 2013 15:03:02 -0700
User-agent: Postbox 3.0.7 (Windows/20130120)

because it will grow the heap on any moderate sized message set, like "all" in a 10000-message inbox?

we pay this cost per-message whenever we're processing a range. fd_set is too large a fixed cost. the pdp11 users who chose "int" for this were trying to do things in a minimalistic way.


Michael Richardson wrote:
"Paul" == Paul Vixie <address@hidden> writes:
    Paul> we could replace this with a fixed array of u_char and some
    Paul> index-and-shift macros, sort of like "struct fd_set" in
    Paul> select(2). in

Can anyone think of a reason why using fd_set isn't just the right
thing?   It is 1024 bits on most systems (256 on others), and a #define
usually lets it get bigger.

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