[Python-Dev] Re: RELEASED Python 2.3.1 (original) (raw)

"Martin v. Löwis" martin at v.loewis.de
Sun Sep 28 15:38:14 EDT 2003

Tim Peters wrote:

At least on Windows, both the flush and the fsync are necessary to see one million bytes (via a different process) at the first prompt, two million at the second, and so on. With neither, another process typically sees 0 bytes before the file gets huge. With just one of them, it seems hard to predict, ranging from 0 to "almost" a million additional bytes per prompt.

As Guido explains, fsync is not necessary for that kind of application on a POSIX system. Once write(2) has completed, all other processes immediately see the changed data.

Regards, Martin

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