[ntp:questions] NTP errors are caused by single and multi-bit memory errors (was: Re: questions Digest, Vol 66, Issue 7)
David J Taylor
david-taylor at blueyonder.co.uk.invalid
Tue Apr 13 06:07:00 UTC 2010
"Rob" <nomail at example.com> wrote in message
news:slrnhs6ijb.i40.nomail at xs8.xs4all.nl...
> David J Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
>> "Todd Glassey" <tglassey at glassey.com> wrote in message
>> news:4BC31C47.1000606 at glassey.com...
>> []
>>> 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
>>
>> I am not aware of any. I rather imagine that memory errors in such a
>> system would likely cause the system to halt, rather than affecting
>> just
>> NTP.
>
> On a non ECC system, single and multi-bit memory errors just go
> undetected
> and do not cause any halt. When they occur at an appreciable rate,
> there will
> probably a lot of mysteriously crashing programs. At still a higher
> rate,
> the entire system will crash or hang.
>
> But there is no deterministic behaviour that you can analyze.
Yes, I stand corrected. The "halt" would be because of some overwrite or
consistency check failure by the OS. I had in mind a hardware-detected
error - obviously not with non-ECC systems.
What was behind Todd's original request?
Cheers,
David
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