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and subject line expensive rpm queries
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Subject: some rpm queries halt the system
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Date: Fri, 16 Jul 2004 12:08:40 +0200
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Package: rpm
Version: 4.0.4-28
Severity: important
I found this when trying to use alien to install an rpm package.
This is the rpm (it's quite huge, 138M):
ftp://web3.moxa.com.tw/SWDownload/UC7420/mxscaleb-3.3.2-1.i386.rpm
(it's a toolchain for a linux embedded device)
This does not halt the system, and shows the name of the package:
rpm -qp mxscaleb-3.3.2-1.i386.rpm
But this does halt the system after one or two minutes with a "rpmq"
process consuming 100% of CPU:
rpm --queryformat '[%{FILEMODES} %{FILEUSERNAME} %{FILEGROUPNAME}
%{FILENAMES}\n]' -qp mxscaleb-3.3.2-1.i386.rpm
The big problem is that this query is done by alien, in line 199 of:
/usr/share/perl5/Alien/Package/Rpm.pm
It's really extrange, because neither memory or disk usage increase. It
looks more like some very bad system call being performed.
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 2.4.25-1-686
Locale: LANG=spanish, LC_CTYPE=spanish (ignored: LC_ALL set to [EMAIL
PROTECTED])
Versions of packages rpm depends on:
ii libbz2-1.0 1.0.2-1 A high-quality block-sorting file
ii libc6 2.3.2.ds1-13 GNU C Library: Shared libraries an
ii libdb3 3.2.9-20 Berkeley v3 Database Libraries [ru
ii libpopt0 1.7-4 lib for parsing cmdline parameters
ii librpm4 4.0.4-28 RPM shared library
ii perl 5.8.3-3 Larry Wall's Practical Extraction
ii zlib1g 1:1.2.1.1-3 compression library - runtime
-- no debconf information
---------------------------------------
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Date: Mon, 31 Oct 2005 10:06:28 +1100
From: =?iso-8859-1?Q?An=EDbal?= Monsalve Salazar <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
Subject: Re: expensive rpm queries
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On Sun, Oct 09, 2005 at 03:29:03PM +1000, Anand Kumria wrote:
>Hi,
>
>With rpm 4.4 (recently uploaded) your query now takes
>
>rpm --queryformat -qp mxscaleb-3.3.2-1.i386.rpm 8.00s user 0.05s system =
38% cpu 21.044 total
>
>Which to me is acceptable.
>
>Unless you have further information to add, I'll be closing this bug
>shortly (in the next four weeks)
I'm closing this bug after four weeks without a reply.
>Thanks,
>Anand
>
>--=20
> `When any government, or any church for that matter, undertakes to say to
> its subjects, "This you may not read, this you must not see, this you are
> forbidden to know," the end result is tyranny and oppression no matter h=
ow
> holy the motives' -- Robert A Heinlein, "If this goes on --"
An=EDbal Monsalve Salazar
--
.''`. Debian GNU/Linux
: :' : Free Operating System
`. `' http://debian.org/
`- http://v7w.com/anibal
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