Messages in this thread |  | | Date | Tue, 12 Sep 2000 19:26:32 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: (reiserfs) Re: More on 2.2.18pre2aa2 |
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On Tue, 12 Sep 2000, Rik van Riel wrote:
>Also, this possibility is /extremely/ remote, if not >impossible. Well, it could happen at one point in time,
It's not impossible. Think when you run a backup of you home directory while you're listening mp3. Both `tar` and `xmms` will read the same file that is out of cache.
`tar` will be the first one who will read the next out-of-cache data-page of the file. The I/O will be so issued with low prio but then, as soon as `tar` has issued the read I/O, also `xmms` will wait on the same page and it will skip the next deadline because the I/O is been issued with low prio.
To make it work right is not simple.
Andrea
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