[ntp:questions] questions Digest, Vol 66, Issue 7
Todd Glassey
tglassey at glassey.com
Mon Apr 12 13:12:39 UTC 2010
On 4/11/2010 10:45 PM, questions-request at lists.ntp.org wrote:
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> Today's Topics:
>
> 1. Monitoring FreeBSD temperatures remotely (David J Taylor)
> 2. Re: Monitoring FreeBSD temperatures remotely (Richard B. Gilbert)
> 3. Re: Monitoring FreeBSD temperatures remotely (unruh)
> 4. Re: Monitoring FreeBSD temperatures remotely (David J Taylor)
> 5. Re: Monitoring FreeBSD temperatures remotely (David J Taylor)
> 6. Re: Monitoring FreeBSD temperatures remotely (Hal Murray)
> 7. backup PPS source (David Lord)
> 8. Re: backup PPS source (Hal Murray)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 11 Apr 2010 14:39:10 +0100
> From: "David J Taylor" <david-taylor at blueyonder.co.uk.invalid>
> To: questions at lists.ntp.org
> Subject: [ntp:questions] Monitoring FreeBSD temperatures remotely
> Message-ID: <hpsjdv$tb5$1 at news.eternal-september.org>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> I'm trying to correlate the few microseconds NTP offset transient I get in
> the morning with the temperature of the system (and most likely with the
> rate of change of temperature). There seems to be a triangulare-shaped
> ~7microsecond transient lasting for about an hour when the heating
> switches on:
>
> http://www.satsignal.eu/mrtg/performance_pixie.php
>
> Do any of the FreeBSD experts out there know if, and how, I might be able
> to get a temperature measurement of my FreeBSD 8.0 system via SNMP?
> Ideally, motherboard temperature (Intel D410PT) but disk or CPU
> temperature would be a start. I have discovered that the 2.5-inch disk it
> uses is SMART enabled and does report disk temperature, so tying that in
> with SNMP so that I can monitor remotely would be a start.....
>
> My programming skills are mor ein Delphi than C/C++, I'm afraid.
>
> Thanks,
> David
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 11 Apr 2010 10:08:15 -0400
> From: "Richard B. Gilbert" <rgilbert88 at comcast.net>
> To: questions at lists.ntp.org
> Subject: Re: [ntp:questions] Monitoring FreeBSD temperatures remotely
> Message-ID: <o6KdnbBtJa5ISlzWnZ2dnUVZ_tKdnZ2d at giganews.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> David J Taylor wrote:
>> I'm trying to correlate the few microseconds NTP offset transient I get
>> in the morning with the temperature of the system (and most likely with
>> the rate of change of temperature). There seems to be a
>> triangulare-shaped ~7microsecond transient lasting for about an hour
>> when the heating switches on:
>>
>> http://www.satsignal.eu/mrtg/performance_pixie.php
>>
>> Do any of the FreeBSD experts out there know if, and how, I might be
>> able to get a temperature measurement of my FreeBSD 8.0 system via SNMP?
>> Ideally, motherboard temperature (Intel D410PT) but disk or CPU
>> temperature would be a start. I have discovered that the 2.5-inch disk
>> it uses is SMART enabled and does report disk temperature, so tying that
>> in with SNMP so that I can monitor remotely would be a start.....
>>
>> My programming skills are mor ein Delphi than C/C++, I'm afraid.
>>
>> Thanks,
>> David
>
> There are such things as recording thermometers. They used to be used
> in data centers to monitor the temperature. ISTR recording hygrometers
> were used to monitor the humidity. It has been six years since I was
> inside anybodies data center and this may no longer be an accurate
> description.
>
>
>
> ------------------------------
>
> Message: 3
> Date: Sun, 11 Apr 2010 14:27:35 GMT
> From: unruh <unruh at wormhole.physics.ubc.ca>
> To: questions at lists.ntp.org
> Subject: Re: [ntp:questions] Monitoring FreeBSD temperatures remotely
> Message-ID: <slrnhs3n2n.8q7.unruh at wormhole.physics.ubc.ca>
> Content-Type: text/plain; charset=us-ascii
>
> On 2010-04-11, David J Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
>> I'm trying to correlate the few microseconds NTP offset transient I get in
>> the morning with the temperature of the system (and most likely with the
>> rate of change of temperature). There seems to be a triangulare-shaped
>> ~7microsecond transient lasting for about an hour when the heating
>> switches on:
>>
>> http://www.satsignal.eu/mrtg/performance_pixie.php
>
> At the same time, the cpu switches off, network traffic disappears, etc.
> Something weird is happening that does not seem to be temperature.
>
>>
>> Do any of the FreeBSD experts out there know if, and how, I might be able
>> to get a temperature measurement of my FreeBSD 8.0 system via SNMP?
>
> The intel motherboards use a weird system of sensor reporting, that the
> lmsensors people had not figured out at least as of a year ago. I am
> familiar with linux, but I suspect freebsd is the same.
> mbmon, healthd are apparently freebsd systems for perhaps getting the
> temp.
>
>> Ideally, motherboard temperature (Intel D410PT) but disk or CPU
>> temperature would be a start. I have discovered that the 2.5-inch disk it
>> uses is SMART enabled and does report disk temperature, so tying that in
>> with SNMP so that I can monitor remotely would be a start.....
>>
>> My programming skills are mor ein Delphi than C/C++, I'm afraid.
>>
>> Thanks,
>> David
>>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 11 Apr 2010 18:16:26 +0100
> From: "David J Taylor" <david-taylor at blueyonder.co.uk.invalid>
> To: questions at lists.ntp.org
> Subject: Re: [ntp:questions] Monitoring FreeBSD temperatures remotely
> Message-ID: <hpt05b$tui$1 at news.eternal-september.org>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=response
>
>> There are such things as recording thermometers. They used to be used
>> in data centers to monitor the temperature. ISTR recording hygrometers
>> were used to monitor the humidity. It has been six years since I was
>> inside anybodies data center and this may no longer be an accurate
>> description.
>
> Indeed there are, but I'm too mean to stretch to buying such a device when
> there are at least two temperature sensors inside the PC itself. Neither
> do I recall any of the remote thermometers I have looked at providing SNMP
> access.
>
> Thanks anyway, Richard.
> David
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sun, 11 Apr 2010 18:29:59 +0100
> From: "David J Taylor" <david-taylor at blueyonder.co.uk.invalid>
> To: questions at lists.ntp.org
> Subject: Re: [ntp:questions] Monitoring FreeBSD temperatures remotely
> Message-ID: <hpt0uo$44i$1 at news.eternal-september.org>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
>> The intel motherboards use a weird system of sensor reporting, that the
>> lmsensors people had not figured out at least as of a year ago. I am
>> familiar with linux, but I suspect freebsd is the same.
>> mbmon, healthd are apparently freebsd systems for perhaps getting the
>> temp.
>
> Thanks for that, Bill. I've found both the packages, but neither seem
> well integrated with SNMP. Does the world have something against SNMP?
>
> To be honest, the prospect of spending half an hour compiling these
> packages (like SNMP and SMART monitoring required) rather than just
> picking up a ready-to-run binary does not appeal greatly either!
>
> I've made a note of your suggestions, though, and they are appreciated.
>
> Cheers,
> David
>
>
>
> ------------------------------
>
> Message: 6
> Date: Sun, 11 Apr 2010 13:23:11 -0500
> From: hal-usenet at ip-64-139-1-69.sjc.megapath.net (Hal Murray)
> To: questions at lists.ntp.org
> Subject: Re: [ntp:questions] Monitoring FreeBSD temperatures remotely
> Message-ID: <iY-dneGoeJgSjl_WnZ2dnUVZ_v-dnZ2d at megapath.net>
>
>
>> Do any of the FreeBSD experts out there know if, and how, I might be able
>> to get a temperature measurement of my FreeBSD 8.0 system via SNMP?
>> Ideally, motherboard temperature (Intel D410PT) but disk or CPU
>> temperature would be a start. I have discovered that the 2.5-inch disk it
>> uses is SMART enabled and does report disk temperature, so tying that in
>> with SNMP so that I can monitor remotely would be a start.....
>
> You can (probably) get the disk temperture with something like:
> smartctl -a /dev/ad4
> That will give you everything else too, so you will have to
> write a script to extract the chunk of data you want.
> (Something like grep for Temperature and awk to print the
> column you want.)
>
> I don't know how to get that to SNMP.
>
I want to know about non ECC memory based PC's running NTP and how many
NTP errors are caused by single and multi-bit memory errors.
Todd
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