1 |
On Wed, Aug 22, 2012 at 4:43 PM, Florian Philipp <lists@×××××××××××.net> wrote: |
2 |
> Am 22.08.2012 22:32, schrieb Jorge Almeida: |
3 |
>> On Wed, Aug 22, 2012 at 8:05 PM, Michael Mol <mikemol@×××××.com> wrote: |
4 |
>>> On Wed, Aug 22, 2012 at 2:52 PM, Jorge Almeida <jjalmeida@×××××.com> wrote: |
5 |
>>>> # tar -xJvf /usr/portage/distfiles/m4-1.4.16.tar.xz |
6 |
>>>> xz: (stdin): Cannot allocate memory |
7 |
>>>> |
8 |
>>>> The box has 2G ram + 1G swap. I'm installing Gentoo from an existing distro. |
9 |
>>> |
10 |
>>> How much do you have free? From xz's manpage: |
11 |
>> |
12 |
>> Almost all of it! It's a one-user workstation, which was essentialy idle. |
13 |
>>> |
14 |
>>> |
15 |
>> I read the man page of xz, but it suggested nothing to me. |
16 |
>>> |
17 |
>>> Three things come to mind: |
18 |
>>> |
19 |
>>> 1) You may not have enough memory free |
20 |
>>> 2) There may be a bug (either compile/link-induced or code-induced) in |
21 |
>>> the copy of xz you're using |
22 |
>>> 3) Upstream used some insane settings, causing a massive increase in |
23 |
>>> the amount of RAM required to decompress that stream. |
24 |
>>> |
25 |
>>> |
26 |
>>> You could download the .tar.xz file, decompress it on a different box, |
27 |
>>> and then recompress it with lighter settings. |
28 |
>>> |
29 |
>>> unxz filename.tar.xz |
30 |
>>> xz -1 filename.tar |
31 |
>>> |
32 |
>> Done that. It extracts now, so 3) is the correct hypothesis, and "insane" is |
33 |
>> really the appropriate word. Of course, the hash digests are now wrong, so |
34 |
>> emerge still fails. Any idea how to find which amount of memory is needed? I |
35 |
>> would setup appropriate swap, if possible. [...] |
36 |
> |
37 |
> There is a table in `man xz` showing the memory requirements. Even with |
38 |
> the highest setting, you only need 65 MB memory for decompression (674 |
39 |
> MB for compression, though). |
40 |
|
41 |
Still not sure about this portion: "Still, it is possible to have .xz files that |
42 |
require several giga‐bytes of memory to decompress." |
43 |
|
44 |
But, yeah, this seems very wonky. |
45 |
|
46 |
-- |
47 |
:wq |