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TVanL3
Beginner
552 Views

Hello, I am using Intel Xeon CPU E5-2695 V4 @ 2.10GHz for one of my project I would like to check the value of the perfeq bit of the processor but I don't know how to do it :( If you have a solution, you're more than welcome ! Thank you

 
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20 Replies
SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

You can find the perfeq bit information on the following URL:

 

https://www.intel.com/content/www/us/en/processors/xeon/xeon-e5-v4-datasheet-vol-2.html

 

Page 166.

 

Best regards,

 

Sergio S.

 

Intel Customer Support Technician

Under Contract to Intel Corporation

TVanL3
Beginner
196 Views

Hello,

 

My problem is that I want to check the value of this bit on my system but I don't know how to

 

Thank you

 

Thomas

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

Can you please confirm what is the specific value or information that you need?

 

Best regards,

 

Sergio S.

 

Intel Customer Support Technician

A Contingent Worker at Intel

 

TVanL3
Beginner
196 Views

Hello,

 

I have to check if the perfeq bit is set in my system so I need to know how to have access to the value of the perfeq bit

I want to know if its value is 0b or 1b

 

Thank you

 

Thomas

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

We are going to investigate on your question and will get back to you.

 

Best regards,

 

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

TVanL3
Beginner
196 Views

Hello,

 

Any update on my problem ?

 

Thank you

 

Thomas

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

Can you please let us know more details on why he needs the perfeq bit value?

Do you have details on what you are exactly doing or trying to achieve?

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

We are following your question and we would like to know if you need more help.

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

We are following your question and we would like to know if you need more help.

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

 

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

In case you need further help please contact us back.

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

TVanL3
Beginner
196 Views

Hello, I designed a board and one of the component on it doesn't fully work when the perfeq bit is set I want to know if it is set or not on the CPU I am using but I don't know how I could check it Thank you Thomas Van Liefde Electronical Engineer [ITRENEW_logo] Route de l'orme des merisiers Parc des algorithmes - Bâtiment Aristote 91190 St-Aubin - France P: (+33) 169 307 334 Mobile: (+33) 674172459 thomas.van-liefde@itrenew.com http://www.itrenew.com
SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

Thank you for the information, we will get back to you as soon as we can.

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

 

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

Thank you for contacting Intel Customer Support.

 

First, we would like to apologize for the delay in our response.

 

Can you please let us know if you have access to XDP blue box? Like the one listed here:

 

https://designintools.intel.com/In_Target_Probe_Debug_Tool_Kit_p/itpxdp3brext.htm

 

Or do you need to read the register thru OS? If so what is the OS you are using for this?

 

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

Thank you for contacting Intel Customer Support.

 

We are following your questions and we would like to know if you need more assistance.

  

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

TVanL3
Beginner
196 Views

Hello Sergio,

 

I don't have a XDP blue box so if it is possible to access registers thru OS that would be better :)

 

I am using a Ubuntu server 16.04

 

Best regards

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

We just received an update on your case:

 

Broadwell supports four PCIe ports: one is DMI port0 (00:00.0) and port 1.a (00:01.0) x8, port 2.a (00:02.0) x16 and port 3.a (00:03.0) x16.

 

So, you have to select one port and use the command:

 

setpci -s 00:02.0 254.l

 

If you do not know which port to read, you can use number lspci –t –v and identify the attached PCIe card.

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

We are following your question and we would like to know if you need more help.

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

 

SergioS_Intel
Moderator
196 Views

Hello TVanL3,

 

We are following your question and we would like to know if you need more help.

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

 

TVanL3
Beginner
196 Views

Hello Sergio,

 

I managed to check what I wanted thanks to your reply !

 

Thanks a lot for your help !

 

Thomas

SergioS_Intel
Moderator
97 Views

Hello TVanL3,

 

We are glad to hear that we were able to assist you, we are going to close this thread.

 

In case you need more assistance please contact us back.

 

Best regards,

Sergio S.

Intel Customer Support Technician

A Contingent Worker at Intel

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