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Full Discussion: Network becomes slow and return fast only after restart network
Operating Systems Linux Red Hat Network becomes slow and return fast only after restart network Post 302895303 by moshesa on Monday 31st of March 2014 05:59:38 AM
Old 03-31-2014
Network becomes slow and return fast only after restart network
Hi,
I have 2 machines in production environment:
1. redhat machine for application
2. DB machine (oracle)

The application doing a lot of small read&writes from and to the DB machine.

The problem is that after some few hours the network from the application to the DB becomes very slow and it returns to the normal only after:
Code:
service network restart

Before:
Code:
64 bytes from hostname.domain (xxx.xxx.xxx.xxx): icmp_seq=1 ttl=63 time=7.81 ms
64 bytes from hostname.domain (xxx.xxx.xxx.xxx): icmp_seq=2 ttl=63 time=5.88 ms
64 bytes from hostname.domain (xxx.xxx.xxx.xxx): icmp_seq=3 ttl=63 time=7.81 ms

After restart network:
Code:
64 bytes from hostname.domain (xxx.xxx.xxx.xxx): icmp_seq=84 ttl=63 time=0.135 ms
64 bytes from hostname.domain (xxx.xxx.xxx.xxx): icmp_seq=85 ttl=63 time=0.171 ms
64 bytes from hostname.domain (xxx.xxx.xxx.xxx): icmp_seq=86 ttl=63 time=0.153 ms

What can it be?
How can i solve this strange behavior?

Thanks.
 

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LEARN ABOUT DEBIAN

lurker-search

LURKER-SEARCH(1)					      General Commands Manual						  LURKER-SEARCH(1)

NAME

       lurker-search -- searches for messages in a lurker database

SYNOPSIS

       lurker-search [-c <config-file>]  [-k <keyword>]  [-d -f -i -v -q]  [<terms>*]

DESCRIPTION

       lurker-search searches a lurker database the same way as the web interface. It can output summary information and delete messages.

OPTIONS

       -c config-file
		 Use this config file for lurker settings.

       -k keyword
		 Tag the matching messages with this keyword.

       -d	 Delete the messages found by this search

       -f	 Don't prompt before deleting

       -i	 Command line paramers are not search terms, but message IDs.

       -v	 Output message summary information

       -q	 Don't output message ids or status

SEARCH TERMS

       Lurker-search accepts these keywords for searching:

       -xxx	 select messages which do NOT match this term

       id:xxx	 select a message by the Message-ID field

       rt:xxx	 select messages which reply to the chosen Message-ID

       th:xxx	 select messages included in this thread

       ml:xxx	 select messages in this mailing list

       gr:xxx	 select messages in this mailing list group

       au:xxx	 select messages with this term in the author fields

       sb:xxx	 select messages with this word in the subject

       lang:xxx  select messages in this language

SEE ALSO

       lurker-index(1), lurker-prune(1), lurker-params(1), lurker-list(1)

       lurker documentation on http://lurker.sourceforge.net/

COPYRIGHT

       Copyright (C) 2002: Wesley W. Terpstra <terpstra@users.sourceforge.net>

       This  program  is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by
       the Free Software Foundation; version 2.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY	WARRANTY;  without  even  the  implied	warranty  of  MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You  should  have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation,
       Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

BUGS

       Before reporting a bug, please confirm that the bug you found is still present in the latest official release.  If  the	problem  persists,
       then send mail with instructions describing how to reproduce the bug to <lurker-users@lists.sourceforge.net>.

																  LURKER-SEARCH(1)
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