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Andy H

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Re: Page created in...
« Reply #15 on: 25 November 2013, 20:34:14 »

How many VMs are you running on that processor/server/disc array?

Is there some housekeeping task that kicks in occasionally?
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TheBoy

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Re: Page created in...
« Reply #16 on: 25 November 2013, 20:50:19 »

How many VMs are you running on that processor/server/disc array?
"Several"
Is there some housekeeping task that kicks in occasionally?
As said, disk throughput is not going up when it happens, its just disk speed seems to drop dramatically (ie, latency goes up, ie, it takes longer to process a disk request).

CPU utilisation shows nothing odd either before or during the glitches, though difficult to tell for sure, as by its nature with "several" VMs, its very spikey. Certainly at no point are any of the Xeon's cores looking stressed.
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henryd

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Re: Page created in...
« Reply #17 on: 25 November 2013, 20:52:51 »

Yeah, that ongoing problem reared its head around 2:30 and 4pm this afternoon, as before, no clues as to why.

I hate spending money on the offchance it will fix it  :'(
You have caught that from your mate tunnie  :y
Trouble is, its quite large sums (£100s) on an offchance it may resolve it. Or about £1500 that I know will resolve it.

Get everyone here to chip in,why should you have to shoulder it. ???
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Entwood

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Re: Page created in...
« Reply #18 on: 25 November 2013, 20:58:50 »

Is anything happening to power supplies .. both external (mains voltage drop??) or internal (12v rails ??) as I've had problems with discs in the past overreacting to to fluctuating power by changing speed ... lets face it, other than fans there'll be nowt else physically moving in your set up, so they'll probably be using most, and be most sensitive to, power ??

Just a thought .. nowt else .. :(
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TheBoy

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Re: Page created in...
« Reply #19 on: 25 November 2013, 21:00:35 »

Yeah, that ongoing problem reared its head around 2:30 and 4pm this afternoon, as before, no clues as to why.

I hate spending money on the offchance it will fix it  :'(
You have caught that from your mate tunnie  :y
Trouble is, its quite large sums (£100s) on an offchance it may resolve it. Or about £1500 that I know will resolve it.

Get everyone here to chip in,why should you have to shoulder it. ???
Because its my hardware, not OOF's property.
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TheBoy

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Re: Page created in...
« Reply #20 on: 25 November 2013, 21:06:07 »

Is anything happening to power supplies .. both external (mains voltage drop??) or internal (12v rails ??) as I've had problems with discs in the past overreacting to to fluctuating power by changing speed ... lets face it, other than fans there'll be nowt else physically moving in your set up, so they'll probably be using most, and be most sensitive to, power ??

Just a thought .. nowt else .. :(
I'd say the electronics would be more sensitive  :-\.  However, being server class hardware, the server's internal environment is constantly monitored by the management processor, and nothing has been logged except when I stuck a pen in one of the fans to test the monitoring a few months ago ;D

Server's power is protected by a UPS, which will deal with (and log) brownouts and surges. Brakkers power is pretty clean TBH.
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Andy H

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Re: Page created in...
« Reply #21 on: 25 November 2013, 21:32:46 »

Is OOF the only VM displaying this behaviour? Is OOF the only VM using simple machines ?

Do the 'several' VMs run the same operating system? or have you got a mix?
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TheBoy

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Re: Page created in...
« Reply #22 on: 25 November 2013, 21:43:10 »

Is OOF the only VM displaying this behaviour?
No

Is OOF the only VM using simple machines ?
All 3 OOF VMs run SMF, nothing else does.

Do the 'several' VMs run the same operating system? or have you got a mix?
Windows, Solaris and Linux. Linux seem worse affected, but thats expected (as Linux is shite). Linux VMs are Debian and CentOS, so from seperate base distros (Debian from, well, Debian, CentOS is a Redhat derivitive).
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MR MISTER

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Re: Page created in...
« Reply #23 on: 25 November 2013, 21:44:40 »

Is OOF the only VM displaying this behaviour?
No

Is OOF the only VM using simple machines ?
All 3 OOF VMs run SMF, nothing else does.

Do the 'several' VMs run the same operating system? or have you got a mix?
Windows, Solaris and Linux. Linux seem worse affected, but thats expected (as Linux is shite). Linux VMs are Debian and CentOS, so from seperate base distros (Debian from, well, Debian, CentOS is a Redhat derivitive).

 ;D ;D ;D Yer what?
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Vamps

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Re: Page created in...
« Reply #24 on: 25 November 2013, 21:45:59 »

Is OOF the only VM displaying this behaviour?
No

Is OOF the only VM using simple machines ?
All 3 OOF VMs run SMF, nothing else does.

Do the 'several' VMs run the same operating system? or have you got a mix?
Windows, Solaris and Linux. Linux seem worse affected, but thats expected (as Linux is shite). Linux VMs are Debian and CentOS, so from seperate base distros (Debian from, well, Debian, CentOS is a Redhat derivitive).

 ;D ;D ;D Yer what?

When the Jargon comes out I just sit back and watch in wonder, I have absolutely no idea what they are saying........ :D :D
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TheBoy

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Re: Page created in...
« Reply #25 on: 25 November 2013, 21:46:03 »

;D ;D ;D Yer what?
In laymans terms, its fooked
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Vamps

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Re: Page created in...
« Reply #26 on: 25 November 2013, 21:46:47 »

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TheBoy

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Re: Page created in...
« Reply #27 on: 25 November 2013, 21:47:31 »

When the Jargon comes out I just sit back and watch in wonder, I have absolutely no idea what they are saying........ :D :D
What jargon?
OOF = well....
VM = Virtaul Machine
SMF = The software that runs the site - Simple Machines Forum
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MR MISTER

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Re: Page created in...
« Reply #28 on: 25 November 2013, 21:51:55 »

When it runs OK it's really fast. Just now and again....
It's like being called out to the dreaded intermittent fault.
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Vamps

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Re: Page created in...
« Reply #29 on: 25 November 2013, 21:52:13 »

When the Jargon comes out I just sit back and watch in wonder, I have absolutely no idea what they are saying........ :D :D
What jargon?
OOF = well....
VM = Virtaul Machine
SMF = The software that runs the site - Simple Machines Forum

I knew that one!....... ;) ;)
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