[dba-SQLServer] [AccessD] A real puzzler

Jim Lawrence accessd at shaw.ca
Sat Aug 8 12:31:28 CDT 2015 

Hi Damien:

Good call. 

...But then what type of CPU are we taking about...there are very limited number of suppliers with 90 plus percent being Intel and AMD. A bad CPU and motherboard combination?  

IMHO, it is still most likely internal power supply related; like in some recent HP servers. (We are assuming that the computer has not been over-clock as all guarantees, then fly right out the window.)
 
Jim

----- Original Message -----
From: "Damien Solodow" <Damien.Solodow at harrison.edu>
To: "Discussion concerning MS SQL Server" <dba-sqlserver at databaseadvisors.com>
Sent: Saturday, August 8, 2015 9:42:32 AM
Subject: Re: [dba-SQLServer] [AccessD] A real puzzler

Other possibility could be related to CPU power states; when it's under light load it tries to step down and it bounces. Should be able to disable cpu power saving in the bios, and possibly in Windows as well.

DAMIEN SOLODOW
Senior Systems Engineer
317.447.6033 (office)
317.447.6014 (fax)
HARRISON COLLEGE

________________________________________
From: dba-SQLServer [dba-sqlserver-bounces at databaseadvisors.com] on behalf of Jim Lawrence [accessd at shaw.ca]
Sent: Saturday, August 08, 2015 12:39 PM
To: Discussion concerning MS SQL Server
Subject: Re: [dba-SQLServer] [AccessD] A real puzzler

I have no idea what the issue could be but the server rebooting while not under load gives a suggestion of the cause.

It must be power related. Obviously it is not external power so it leaves only the internal power supply and related wiring. IMHO, that is the problem and I would replace that power hardware as soon as convenient.

Jim

----- Original Message -----
From: "John W. Colby" <jwcolby at gmail.com>
To: "Access Developers discussion and problem solving" <accessd at databaseadvisors.com>, "Discussion concerning MS SQL Server" <dba-sqlserver at databaseadvisors.com>
Sent: Saturday, August 8, 2015 5:14:47 AM
Subject: Re: [dba-SQLServer] [AccessD] A real puzzler

For the last several days I have been flogging away at the system
(performing real work), causing the system to stay active.  All cores
running, 75 (out of 80) GB used for SQL Server.  No reboots during that
entire time.  And yet:

Critical    8/4/2015 6:56:10 AM    Kernel-Power    41    (63)
Critical    8/4/2015 4:42:07 AM    Kernel-Power    41    (63)
Critical    8/3/2015 10:04:36 PM    Kernel-Power    41    (63)
Critical    8/3/2015 5:32:06 PM    Kernel-Power    41    (63)
Critical    8/3/2015 2:22:15 PM    Kernel-Power    41    (63)
Critical    8/2/2015 3:29:33 PM    Kernel-Power    41    (63)
Critical    8/2/2015 11:21:46 AM    Kernel-Power    41    (63)
Critical    8/2/2015 10:51:30 AM    Kernel-Power    41    (63)
Critical    8/2/2015 7:17:21 AM    Kernel-Power    41    (63)
Critical    7/31/2015 11:50:45 PM    Kernel-Power    41    (63)
Critical    7/31/2015 1:05:39 PM    Kernel-Power    41    (63)
Critical    7/30/2015 10:11:57 PM    Kernel-Power    41    (63)
Critical    7/30/2015 4:59:26 PM    Kernel-Power    41    (63)
Critical    7/29/2015 2:32:50 PM    Kernel-Power    41    (63)
Critical    7/28/2015 5:20:38 PM    Kernel-Power    41    (63)
Critical    7/28/2015 12:12:57 PM    Kernel-Power    41    (63)
Critical    7/28/2015 4:15:38 AM    Kernel-Power    41    (63)
Critical    7/28/2015 2:47:12 AM    Kernel-Power    41    (63)

WEIRD!!!

Notice no pattern in number of events per day, nor time of day. There is
no memory dump being created, the system just reboots as if the power
was turned off and back on.  When I was in the room with it, (several
years ago) the system would beep as it rebooted.

Here is the last such event:

Log Name:      System
Source:        Microsoft-Windows-Kernel-Power
Date:          8/4/2015 6:56:10 AM
Event ID:      41
Task Category: (63)
Level:         Critical
Keywords:      (2)
User:          SYSTEM
Computer:      Azul
Description:
The system has rebooted without cleanly shutting down first. This error
could be caused if the system stopped responding, crashed, or lost power
unexpectedly.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
   <System>
     <Provider Name="Microsoft-Windows-Kernel-Power"
Guid="{331C3B3A-2005-44C2-AC5E-77220C37D6B4}" />
     <EventID>41</EventID>
     <Version>2</Version>
     <Level>1</Level>
     <Task>63</Task>
     <Opcode>0</Opcode>
     <Keywords>0x8000000000000002</Keywords>
     <TimeCreated SystemTime="2015-08-04T10:56:10.006809600Z" />
     <EventRecordID>270735</EventRecordID>
     <Correlation />
     <Execution ProcessID="4" ThreadID="8" />
     <Channel>System</Channel>
     <Computer>Azul</Computer>
     <Security UserID="S-1-5-18" />
   </System>
   <EventData>
     <Data Name="BugcheckCode">0</Data>
     <Data Name="BugcheckParameter1">0x0</Data>
     <Data Name="BugcheckParameter2">0x0</Data>
     <Data Name="BugcheckParameter3">0x0</Data>
     <Data Name="BugcheckParameter4">0x0</Data>
     <Data Name="SleepInProgress">false</Data>
     <Data Name="PowerButtonTimestamp">0</Data>
   </EventData>
</Event>

John W. Colby

On 8/8/2015 7:57 AM, James Button wrote:
> Guest that!
>
> Re memory diagnostic - I have found with past experiences of accelerating
> frequency of shut-downs, that the system didn't get a chance to record any
> events.
> And memory checks showed no problems - providing the rest of the system wasn't
> being stressed.
>
> One system I found that removing a memory module - any of them stopped the
> shutdowns, and I eventually 'bodged' the system by increasing the memory refresh
> by a cycle. It was an old system and a 'new' memory module was, being old tech,
> horrendously expensive
> That worked for several years, and eventually management agreed the system was
> too slow - as in users kept complaining about the system's response, so we were
> actually allowed to BUY a new one!
>
> JimB
>

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