Wireshark-bugs: [Wireshark-bugs] [Bug 10068] tshark, running on MacOS 10.9, performing the stat
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Tue, 06 May 2014 09:30:44 +0000

Comment # 8 on bug 10068 from 
The file size and samples might not matter if the small file, using 1s samples,
is big enough to cause problems; if you're reading the larger file, or if
you're doing 0.1s samples, the system will wedge up after reading a smaller
fraction of the file, but it'll still wedge up.

The items being allocated are io_stat_item_t's, which are 80 bytes long on an
LP64 platform, so that's 80 bytes (plus malloc overhead, if any) per sample.

Unless there's a *ton* of malloc overhead, if reading the 10MB file with 1s
samples allocates a total of 80GB, that's over a billion seconds, which seems
unlikely (and I suspect it doesn't allocate one for sample time periods with no
packets).

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