SV: SV: Latest Stable MailScanner
Steen, Glenn
Glenn.Steen at AP1.SE
Mon Jun 6 22:47:57 IST 2005
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Indeed. And MS is not alone in this type of behaviour. It's when the parent _never_ reaps the defuncts that one should stop and pay attention... Like with the crummy AIX snmpd thing that I've got missbehaving ATM...:-).
-- Glenn
-----Ursprungligt meddelande-----
Från: MailScanner mailing list genom Julian Field
Skickat: må 2005-06-06 21:44
Till: MAILSCANNER at JISCMAIL.AC.UK
Kopia:
Ämne: Re: SV: Latest Stable MailScanner
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If you look at the process IDs of the defunct processes, you will find
that they actually are constantly changing, and are therefore not the
same defunct processes at all. MailScanner does generate defunct
processes which live for a second or two before being reaped. It
generates a steady stream of them, which it constantly reaps. This is
all quite normal.
Steen, Glenn wrote:
>Defunct processes are a normal occurence (harmless things at that, only "occupying" a PID until the "parent" reaps them by wait()... so that noone accidentally signals the wrong process or somesuch:), so unless you have any other problem indicators... I wouldn't worry too much:).
>
>-- Glenn
>
>-----Ursprungligt meddelande-----
>Från: MailScanner mailing list genom Michael H. Martel
>Skickat: må 2005-06-06 14:34
>Till: MAILSCANNER at JISCMAIL.AC.UK
>Kopia:
>Ämne: Latest Stable MailScanner
>hello!
>
>I just tried to upgrade to the latest stable version of MailScanner on my
>production box. When I launch MailScanner, everything seems to be fine.
>However, I start seeing defunct processes for MailScanner after a very
>short time (seconds).
>
>Using the last stable vesion I can do :
>
>[root at hemlock opt]# ps -eaf | grep Mail
>root 12265 1 0 08:29 ? 00:00:00 /usr/bin/perl
>-I/opt/MailScanner
>root 12266 12265 1 08:29 ? 00:00:02 /usr/bin/perl
>-I/opt/MailScanner
>root 12321 12265 1 08:29 ? 00:00:02 /usr/bin/perl
>-I/opt/MailScanner
>root 12339 12265 1 08:29 ? 00:00:03 /usr/bin/perl
>-I/opt/MailScanner
>root 12427 12265 1 08:30 ? 00:00:02 /usr/bin/perl
>-I/opt/MailScanner
>root 12558 12265 1 08:30 ? 00:00:02 /usr/bin/perl
>-I/opt/MailScanner
>root 12785 25309 0 08:32 pts/0 00:00:00 grep Mail
>
>Using the latest Stable version, almost everytime I do the same command I
>see the following :
>
>[root at hemlock log]# ps -eaf | grep Mail
>root 12013 1 0 08:27 ? 00:00:00 /usr/bin/perl
>-I/opt/MailScanner
>root 12014 12013 6 08:27 ? 00:00:02 [MailScanner <defunct>]
>root 12051 12013 8 08:27 ? 00:00:02 [MailScanner <defunct>]
>root 12067 12013 14 08:27 ? 00:00:02 /usr/bin/perl
>-I/opt/MailScanner
>root 12092 12013 52 08:27 ? 00:00:02 /usr/bin/perl
>-I/opt/MailScanner
>root 12095 25309 0 08:27 pts/0 00:00:00 grep Mail
>
>
>It looks like I start getting defunct processes almost immediately after
>launching it. MailScanner -v gives me the following.
>
>Thoughts ?
>
>[root at hemlock opt]# /opt/MailScanner-4.42.9/bin/MailScanner -v
>Running on
>Linux hemlock.vsc.edu 2.4.20-28.7smp #1 SMP Thu Dec 18 11:18:31 EST 2003
>i686 unknown
>This is Red Hat Linux release 7.3 (Valhalla)
>This is Perl version 5.008006 (5.8.6)
>
>This is MailScanner version 4.42.9
>Module versions are:
>1.00 AnyDBM_File
>1.14 Archive::Zip
>1.03 Carp
>1.119 Convert::BinHex
>1.00 DirHandle
>1.05 Fcntl
>2.73 File::Basename
>2.08 File::Copy
>2.01 FileHandle
>1.06 File::Path
>0.16 File::Temp
>1.29 HTML::Entities
>3.45 HTML::Parser
>2.30 HTML::TokeParser
>1.21 IO
>1.10 IO::File
>1.123 IO::Pipe
>1.50 Mail::Header
>3.05 MIME::Base64
>5.417 MIME::Decoder
>5.417 MIME::Decoder::UU
>5.417 MIME::Head
>5.417 MIME::Parser
>3.03 MIME::QuotedPrint
>5.417 MIME::Tools
>0.10 Net::CIDR
>1.08 POSIX
>1.77 Socket
>0.05 Sys::Syslog
>1.02 Time::localtime
>
>Optional module versions are:
>1.811 DB_File
>1.08 Digest
>1.01 Digest::HMAC
>2.33 Digest::MD5
>2.10 Digest::SHA1
>0.44 Inline
>missing Mail::ClamAV
>3.000003 Mail::SpamAssassin
>1.997 Mail::SPF::Query
>0.15 Net::CIDR::Lite
>0.48 Net::DNS
>0.32 Net::LDAP
>1.94 Parse::RecDescent
>missing SAVI
>1.2 Sys::Hostname::Long
>2.42 Test::Harness
>0.47 Test::Simple
>1.95 Text::Balanced
>1.35 URI
>
>
>Michael
>
>--
>
> --------------------------------o---------------------------------
> Michael H. Martel | Systems Administrator
> michael.martel at vsc.edu | Vermont State Colleges
> http://www.vsc.edu/~michael | PH:802-241-2544 FX:802-241-3363
>
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>
>
- --
Julian Field
www.MailScanner.info
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Before posting, read the Wiki (http://wiki.mailscanner.info/) and
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Support MailScanner development - buy the book off the website!
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