About CPU load 🔗 link

Hello,

I'm using xymon 4.3.5, my as is the follow:

Is correct the default params that appear on "analysis.cfg" for chect 
the cpu load in case that the server have 4 cores (intel xeon 1230)?, 
can i use this values for anyone CPU types?

Thank you, best regards.

From: Operaciones [mailto:user-1e7642c06451@xymon.invalid]
Sent: Sunday, April 07, 2013 10:58 AM
To: Xymon List <xymon at xymon.com>
Subject: [Xymon] Fwd: About CPU load

I forget, the default params that appear in this file are:

LOAD    5.0 10.0

Thank you, best regards.

-------- Mensaje original --------
Asunto:         About CPU load
Fecha:  Sun, 07 Apr 2013 16:56:32 +0200

Hello,

I'm using xymon 4.3.5, my as is the follow:

Is correct the default params that appear on "analysis.cfg" for chect the cpu load in case that the server have 4 cores (intel xeon 1230)?, can i use this values for anyone CPU types?

Thank you, best regards.

El 07/04/13 18:16, Novosielski, Ryan escribió:

This default is a reasonably nice default for a single CPU system, but this is really a parameter that is site-dependent. For example, I have a 24 CPU compute server. A load of 5 is hardly breaking a sweat. In some cases, high load doesn't even affect the system and you wouldn't want to be notified until a normally unreasonably high value. I'd suspect 10.0 15.0 for your system or 15.0 20.0 might not be a bad guess.


*From*: Operaciones [mailto:user-1e7642c06451@xymon.invalid]
*Sent*: Sunday, April 07, 2013 10:58 AM
*To*: Xymon List <xymon at xymon.com>
*Subject*: [Xymon] Fwd: About CPU load

I forget, the default params that appear in this file are:

LOAD    5.0 10.0

Thank you, best regards.

-------- Mensaje original --------
Asunto: 	About CPU load
Fecha: 	Sun, 07 Apr 2013 16:56:32 +0200
De: 	Operaciones <user-1e7642c06451@xymon.invalid>
Para: 	xymon at xymon.com


Hello,

I'm using xymon 4.3.5, my as is the follow:

Is correct the default params that appear on "analysis.cfg" for chect the cpu load in case that the server have 4 cores (intel xeon 1230)?, can i use this values for anyone CPU types?

Thank you, best regards.

From: Operaciones [mailto:user-1e7642c06451@xymon.invalid]
Sent: Sunday, April 07, 2013 12:22 PM
To: Novosielski, Ryan
Cc: 'xymon at xymon.com' <xymon at xymon.com>
Subject: Re: [Xymon] Fwd: About CPU load

Thank you Ryan, one ask, are there eny way for calc this?, or you suggest taht the better way is testing in each server?

El 07/04/13 18:16, Novosielski, Ryan escribió:
This default is a reasonably nice default for a single CPU system, but this is really a parameter that is site-dependent. For example, I have a 24 CPU compute server. A load of 5 is hardly breaking a sweat. In some cases, high load doesn't even affect the system and you wouldn't want to be notified until a normally unreasonably high value. I'd suspect 10.0 15.0 for your system or 15.0 20.0 might not be a bad guess.


From: Operaciones [mailto:user-1e7642c06451@xymon.invalid]
Sent: Sunday, April 07, 2013 10:58 AM
To: Xymon List <xymon at xymon.com><mailto:xymon at xymon.com>
Subject: [Xymon] Fwd: About CPU load

I forget, the default params that appear in this file are:

LOAD    5.0 10.0

Thank you, best regards.

-------- Mensaje original --------
Asunto:         About CPU load
Fecha:  Sun, 07 Apr 2013 16:56:32 +0200
De:     Operaciones <user-1e7642c06451@xymon.invalid><mailto:user-1e7642c06451@xymon.invalid>
Para:   xymon at xymon.com<mailto:xymon at xymon.com>


Hello,

I'm using xymon 4.3.5, my as is the follow:

Is correct the default params that appear on "analysis.cfg" for chect the cpu load in case that the server have 4 cores (intel xeon 1230)?, can i use this values for anyone CPU types?

Thank you, best regards.

On 2013-04-07 17:22, Operaciones wrote:

Thank you Ryan, one ask, are there eny way for calc this?, or you
suggest taht the better way is testing in each server?

El 07/04/13 18:16, Novosielski, Ryan escribió:

This default is a reasonably nice default for a single CPU system,
but this is really a parameter that is site-dependent. For example,
I have a 24 CPU compute server. A load of 5 is hardly breaking a
sweat. In some cases, high load doesn't even affect the system and
you wouldn't want to be notified until a normally unreasonably high
value. I'd suspect 10.0 15.0 for your system or 15.0 20.0 might not
be a bad guess.

 

FROM: Operaciones [mailto:user-1e7642c06451@xymon.invalid [1]]
SENT: Sunday, April 07, 2013 10:58 AM
TO: Xymon List <xymon at xymon.com> [2]
SUBJECT: [Xymon] Fwd: About CPU load
 
I forget, the default params that appear in this file are:

LOAD    5.0 10.0

Thank you, best regards.

-------- Mensaje original --------

ASUNTO:
About CPU load

FECHA:
Sun, 07 Apr 2013 16:56:32 +0200

DE:

Hello,

I'm using xymon 4.3.5, my as is the follow:

Is correct the default params that appear on "analysis.cfg" for
chect the cpu load in case that the server have 4 cores (intel xeon
1230)?, can i use this values for anyone CPU types?

Thank you, best regards.

On Mon, Apr 8, 2013 at 4:36 AM, Iain M Conochie <user-c784e16a5170@xymon.invalid> wrote:

On 2013-04-07 17:22, Operaciones wrote:

Thank you Ryan, one ask, are there eny way for calc this?, or you
suggest taht the better way is testing in each server?

Load average is a logarithmic method of measuring the run queue on your
system. The output of the 3 values gives you the run queue over 1 minute, 5
minutes and 15 minutes respectively.

An old rule of thumb was to have a load average of not greater than 2 per
cpu, but this is generally site dependent. Are you going to be sending out
alerts for a high load? Do you _really_ want to be woken at 2AM cos the
backup job has spiked the load?

I would advise you set the threshold a bit higher for your system (perhaps
8.0 and 16.0, based on 4 cores) and then after a suitable time period
(perhaps 2 weeks) you can look at the CPU load graph to see what kind of
usage the system has and adjust accordingly. During this time you probably
don't want to send out alerts (but perhaps you do; your call :) IMO,
normally a spike in load is not an issue, but a a system that over 6 months
has an ever increasing load is a problem. This is where the trends analysis
function comes into it's own.

OF course load spikes can impact performance, but it is hard to gauge
exactly what that impact is from the load average alone.

Cheers

Iain

El 07/04/13 18:16, Novosielski, Ryan escribió:

 This default is a reasonably nice default for a single CPU system,

but this is really a parameter that is site-dependent. For example,
I have a 24 CPU compute server. A load of 5 is hardly breaking a
sweat. In some cases, high load doesn't even affect the system and
you wouldn't want to be notified until a normally unreasonably high
value. I'd suspect 10.0 15.0 for your system or 15.0 20.0 might not
be a bad guess.


FROM: Operaciones [mailto:operaciones at corpresa.**com<user-1e7642c06451@xymon.invalid>[1]]
SENT: Sunday, April 07, 2013 10:58 AM
TO: Xymon List <xymon at xymon.com> [2]
SUBJECT: [Xymon] Fwd: About CPU load


I forget, the default params that appear in this file are:

LOAD    5.0 10.0

Thank you, best regards.

-------- Mensaje original --------

ASUNTO:
About CPU load

FECHA:

Sun, 07 Apr 2013 16:56:32 +0200

DE:
Operaciones <user-1e7642c06451@xymon.invalid> [3]

PARA:


Hello,

I'm using xymon 4.3.5, my as is the follow:

Is correct the default params that appear on "analysis.cfg" for
chect the cpu load in case that the server have 4 cores (intel xeon
1230)?, can i use this values for anyone CPU types?

Thank you, best regards.

Links:

On Apr 8, 2013, at 8:21 AM, Ralph Mitchell <user-00a5e44c48c0@xymon.invalid> wrote:

You can handle load spikes with the DURATION keyword in alerts.cfg.  The client normally samples every 5 minutes, so if a spike generally lasts for two samples you could set DURATION>13 to get alerts sent out on the 3rd sample.

Ralph Mitchell


On Mon, Apr 8, 2013 at 4:36 AM, Iain M Conochie <user-c784e16a5170@xymon.invalid> wrote:

On 2013-04-07 17:22, Operaciones wrote:

Thank you Ryan, one ask, are there eny way for calc this?, or you
suggest taht the better way is testing in each server?

Load average is a logarithmic method of measuring the run queue on your system. The output of the 3 values gives you the run queue over 1 minute, 5 minutes and 15 minutes respectively.

An old rule of thumb was to have a load average of not greater than 2 per cpu, but this is generally site dependent. Are you going to be sending out alerts for a high load? Do you _really_ want to be woken at 2AM cos the backup job has spiked the load?

I would advise you set the threshold a bit higher for your system (perhaps 8.0 and 16.0, based on 4 cores) and then after a suitable time period (perhaps 2 weeks) you can look at the CPU load graph to see what kind of usage the system has and adjust accordingly. During this time you probably don't want to send out alerts (but perhaps you do; your call :) IMO, normally a spike in load is not an issue, but a a system that over 6 months has an ever increasing load is a problem. This is where the trends analysis function comes into it's own.

OF course load spikes can impact performance, but it is hard to gauge exactly what that impact is from the load average alone.

Cheers

Iain

El 07/04/13 18:16, Novosielski, Ryan escribió:

This default is a reasonably nice default for a single CPU system,
but this is really a parameter that is site-dependent. For example,
I have a 24 CPU compute server. A load of 5 is hardly breaking a
sweat. In some cases, high load doesn't even affect the system and
you wouldn't want to be notified until a normally unreasonably high
value. I'd suspect 10.0 15.0 for your system or 15.0 20.0 might not
be a bad guess.

 
FROM: Operaciones [mailto:user-1e7642c06451@xymon.invalid [1]]
SENT: Sunday, April 07, 2013 10:58 AM
TO: Xymon List <xymon at xymon.com> [2]
SUBJECT: [Xymon] Fwd: About CPU load

 I forget, the default params that appear in this file are:

LOAD    5.0 10.0

Thank you, best regards.

-------- Mensaje original --------

ASUNTO:
About CPU load

FECHA:

Sun, 07 Apr 2013 16:56:32 +0200

DE:
Operaciones <user-1e7642c06451@xymon.invalid> [3]

PARA:


Hello,

I'm using xymon 4.3.5, my as is the follow:

Is correct the default params that appear on "analysis.cfg" for
chect the cpu load in case that the server have 4 cores (intel xeon
1230)?, can i use this values for anyone CPU types?

Thank you, best regards.

Links:
[1] mailto:user-1e7642c06451@xymon.invalid
[3] mailto:user-1e7642c06451@xymon.invalid