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From: [EMAIL PROTECTED]
Subject: mpg123: compiling without mmap would lessen cache pollution
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Date: Mon, 07 Feb 2000 04:44:03 +0200
Package: mpg123
Version: 0.59q-2
Severity: wishlist
hello,
it would be better if mpg123 were built without the READ_MMAP define.
using mmap() causes much more cache pollution than read(), the kernel
is less eager to reclaim mmaped pages than data that is just in the
page cache.
the RSS of mpg123 grows pretty quickly and other apps start getting
swapped out. the effect is more pronounced with big mpeg files and/or
high bitrates.
here's what it looks like after a while of decoding a largish
mpeg stream. (i used mpg123 -s file.mpeg > /dev/null to accelerate the
process a bit)
Mem: 63356K av, 61720K used, 1636K free, 27228K shrd, 1928K buff
Swap: 307400K av, 44484K used, 262916K free 37288K cached
PID USER NI SIZE SWAP RSS SHARE D %CPU TIME COMMAND
31129 erno 0 12052 0 11M 11852 50 0.0 1:50 /usr/bin/mpg123
434 root 0 27692 17M 9.8M 1368 2K 6.2 728:11 /usr/X11R6/bin/X
30716 erno 0 3512 500 3012 1824 278 0.0 0:02 netscape
-- System Information
Debian Release: potato
Kernel Version: Linux fun77 2.2.10 #1 Sun Jun 20 19:03:53 EEST 1999 i586 unknown
Versions of the packages mpg123 depends on:
ii libc6 2.1.2-11 GNU C Library: Shared libraries and Timezone
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Date: Fri, 28 Dec 2001 00:30:53 +0000
From: Colin Watson <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED], [EMAIL PROTECTED],
[EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: mpg123 0.59r-10 is now in testing
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Sender: Colin Watson <[EMAIL PROTECTED]>
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Hi,
mpg123 0.59r-10 is now (finally) in testing, so these bugs no longer
apply:
#57220: -DREAD_MMAP was removed in 0.59r-5.
#112240: -w/--wav was documented in 0.59r-7.
#121697: mpg123 moved to the FHS in 0.59r-1.
#124193: Ditto.
Cheers,
--
Colin Watson [EMAIL PROTECTED]
