Your message dated Sat, 18 Feb 2023 00:07:40 +0000
with message-id <[email protected]>
and subject line Bug#668580: fixed in procps 2:4.0.3-1
has caused the Debian Bug report #668580,
regarding [vmstat] performs faulty averaging of interrupt/ctxt switch counters
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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--
668580: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=668580
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: procps
Version: 1:3.3.2-3
Severity: normal
Dear Maintainer,
If you just run vmstat or vmstat 1 the first line shows an average of
certain counters since machine boot. However, I believe that at least
the average interrupt and context switch counts are broken.
Observer the following output:
edb@lapedb:~/today$ grep -E -e "ctxt|intr" /proc/stat | cut -d \ -f 1-2 ;
cat /proc/uptime ; vmstat
intr 1051786
ctxt 1184893
1188.50 9001.64
procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu----
r b swpd free buff cache si so bi bo in cs us sy id wa
1 0 0 6979028 77512 642036 0 0 73 18 111 125 3 1 95 2
So we have 1051786 interrupts during 1188 seconds which gives an average of:
>>> 1051786/1188
885
Same for context switches:
>>> 1184893/1188
997
One thing however which should be noted is that if I multiply vmstats output
by 8, I get very close to the real results. (Why the magical 8 ? Believe it
or not but my laptop has a quad core cpu with ht:
edb@lapedb:~/today$ cat /proc/cpuinfo | grep processor | wc -l
8
)
I took a look at the code, and si/so bi/bo are also calculated the same way,
so these might also be broken.
-- System Information:
Debian Release: wheezy/sid
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Kernel: Linux 3.2.0-2-686-pae (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages procps depends on:
ii initscripts 2.88dsf-22.1
ii libc6 2.13-27
ii libncurses5 5.9-4
ii libncursesw5 5.9-4
ii libprocps0 1:3.3.2-3
ii libtinfo5 5.9-4
ii lsb-base 4.1+Debian0
Versions of packages procps recommends:
ii psmisc 22.16-1
procps suggests no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: procps
Source-Version: 2:4.0.3-1
Done: Craig Small <[email protected]>
We believe that the bug you reported is fixed in the latest version of
procps, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Craig Small <[email protected]> (supplier of updated procps package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Sat, 18 Feb 2023 10:17:15 +1100
Source: procps
Architecture: source
Version: 2:4.0.3-1
Distribution: unstable
Urgency: medium
Maintainer: Craig Small <[email protected]>
Changed-By: Craig Small <[email protected]>
Closes: 668580 1025915 1026326 1027963 1031343
Changes:
procps (2:4.0.3-1) unstable; urgency=medium
.
* New upstream release
- docs: Translated manpages installed
- pgrep: make --terminal respect other criteria
- ps: c flag shows command name again Closes: #1026326
- skill: Match on -p again Closes: #1025915
- vmstat: Referesh memory statistics Closes: #1027963
- vmstat: Fix initial si,so,bi,bo,in & cs values Closes: #668580
* Update standards version
* Improve cross-building Closes: #1031343
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Files:
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