Discussion:
[rancid] Rancid - High CPU on PE's and CE's
Shane Haslem
2008-01-18 15:34:29 UTC
Permalink
Hi all,

I have a problem with high CPU utilization on CE's and Pe's that are
being captured via rancid. Is this symptomatic of too many commands
being issued?

Regards










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Andrew Brennan
2008-01-18 16:09:48 UTC
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The commands are sequential, so you might see a spike over an interval of
time when 10-15 commands are executed in a minute or two. My guess is it
is a few specific commands that are cpu-bound, though. You could cut the
command list back to the bare essentials and reduce the CPU effects?
Post by Shane Haslem
I have a problem with high CPU utilization on CE's and Pe's that are
being captured via rancid. Is this symptomatic of too many commands
being issued?
Regards
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with it is confidential and may be subject to legal professional
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john heasley
2008-01-19 17:27:56 UTC
Permalink
sure, some commands consume cpu, whether run by rancid or a user. show run
on a cisco with a bunch of pppoe is a perfect example. its the generation
of the output, nothing else, that is costly for the router. if you want to
limit it, collect less frequently.
Post by Andrew Brennan
The commands are sequential, so you might see a spike over an interval of
time when 10-15 commands are executed in a minute or two. My guess is it
is a few specific commands that are cpu-bound, though. You could cut the
command list back to the bare essentials and reduce the CPU effects?
Post by Shane Haslem
I have a problem with high CPU utilization on CE's and Pe's that are
being captured via rancid. Is this symptomatic of too many commands
being issued?
Regards
The information contained in this e-mail and any files transmitted
with it is confidential and may be subject to legal professional
privilege. It is intended solely for the use of the addressee(s).
If you are not the intended recipient of this e-mail, please note
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Shane Haslem
2008-01-21 14:09:33 UTC
Permalink
Hi John,
Can you advise how to decrease the number of commands to just ' show
running-config'. In otherwards, where I find the commands that are run
and remove redundant ones from the config.
thanks

-----Original Message-----
From: john heasley [mailto:***@shrubbery.net]
Sent: 19 January 2008 17:28
To: Andrew Brennan
Cc: Shane Haslem; rancid-***@shrubbery.net
Subject: Re: [rancid] Re: Rancid - High CPU on PE's and CE's

sure, some commands consume cpu, whether run by rancid or a user. show
run
on a cisco with a bunch of pppoe is a perfect example. its the
generation
of the output, nothing else, that is costly for the router. if you want
to
limit it, collect less frequently.
Post by Andrew Brennan
The commands are sequential, so you might see a spike over an interval of
time when 10-15 commands are executed in a minute or two. My guess is it
is a few specific commands that are cpu-bound, though. You could cut the
command list back to the bare essentials and reduce the CPU effects?
Post by Shane Haslem
I have a problem with high CPU utilization on CE's and Pe's that are
being captured via rancid. Is this symptomatic of too many commands
being issued?
Regards
The information contained in this e-mail and any files transmitted
with it is confidential and may be subject to legal professional
privilege. It is intended solely for the use of the addressee(s).
If you are not the intended recipient of this e-mail, please note
that any review, dissemination, disclosure, alteration, printing,
copying or transmission of this e-mail and/or any file transmitted
with it, is prohibited and may be unlawful.
If you have received this e-mail by mistake, please promptly
inform the sender by reply e-mail and delete the material.
Whilst this e-mail message has been swept for the presence of
computer viruses, eircom (UK) Limited does not, except as required by law,
represent, warrant and/or guarantee that the integrity
of this communication has been maintained nor that
the communication is free of errors, viruses, interception or
interference.
eircom (UK) Limited. Private Company Limited by Shares.
Registered in England and Wales. Registration Number 03478971.
Registered Office - South Quay, Plaza 2, 183 Marsh Wall, London, E14 9SH.
_______________________________________________
Rancid-discuss mailing list
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of this communication has been maintained nor that
the communication is free of errors, viruses, interception or
interference.

eircom (UK) Limited. Private Company Limited by Shares.
Registered in England and Wales. Registration Number 03478971.
Registered Office - South Quay, Plaza 2, 183 Marsh Wall, London, E14 9SH.
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