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Re: xz -9 : Cannot allocate memory
- From: Achim Gratz <Stromeko at nexgo dot de>
- To: cygwin at cygwin dot com
- Date: Thu, 29 Aug 2013 21:18:52 +0200
- Subject: Re: xz -9 : Cannot allocate memory
- Authentication-results: sourceware.org; auth=none
- References: <50A41697 dot 3080406 at tiscali dot co dot uk> <loom dot 20130829T155739-66 at post dot gmane dot org> <loom dot 20130829T162752-851 at post dot gmane dot org> <20130829151121 dot GR21571 at calimero dot vinschen dot de> <521F699C dot 1060703 at cwilson dot fastmail dot fm> <20130829160000 dot GT21571 at calimero dot vinschen dot de> <521F84D8 dot 7090908 at cwilson dot fastmail dot fm>
Charles Wilson writes:
>> Right. But is a bit lame that it just fails. Does it have to use
>> this big buffer or would it also work with a smaller buffer, if there's
>> no memory chunk big enough?
>
> From what I understand, it will /not/ be able to perform the kinds of
> tasks that -9 specifies. E.g. -9 represents a collection of tuning
> parameters, including such things as "and use a gigantic dictionary to
> store bit sequences that may repeat, and hence be represented by
> shortened codes". If you want a -9-sized dictionary, and you can't
> get it...xz shouldn't fall back to a -8-sized one.
Correct.
However I had actually used --best (which is an alias for -9), which
probably should tune down when -9 won't work, especially when given a
file (just for testing of course) that is not even a single kiB and so
it wouldn't make any difference at all which dictionary size is chosen.
Normally I'd feed it something of several dozens of MiB, though.
Regards,
Achim.
--
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+
Waldorf MIDI Implementation & additional documentation:
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