Hello,
I'm back with my strange things
I always have 2 C6100 chassis, each with 4 nodes.
The L5520 have a cool function, it clock down to save power or it clock up (intel turbo mode) on the high demand.
The CPU play with his multiplier to change the CPU core frequency on the fly. Until now nothing new
In my C6100 the L5520 has a range of 12 to 17 multiplier. Turbo mode goes to 19.
When I use CPU-Z to check the beast, I'm happy to see the frequency varying from 1600mhz with a 12 to 2500 with a 19.
When I received the chassis I have benchmarked and stressed each node... Ans was soooo happy.
I had a very small fan issue and try to solve with a full firmware update ( mbc + fbc + bios). All was ok excepted in the chassi2, the fbc is a pic16 and I was not able to upgrade with the official c6100 firmware . I deal with this and pass my way.
Now the best part for those who have read to here
From a week, I have noticed a perf reduction on the node on wich I'm working. I benchmark back the node and ... The multiplier stay blocked @ 12 then @ 1600 MHz .
I have checked the bios, the os, the ram, deferent nodes... I boot always the same os on the same ssd.
Now the tricky part. If I take one node from the chassi1 and plug into the chassi2... The frequency vary well with the load. If I put back the node from the chassi2 to chassi1... The issue is back.
The only delta on both chassis is the fcb, the I rolled back the firmware of the chassi1 from 1.20 to 1.17 (was the original version for me)
Thanks for your help I'm not able to understand why a same node has a different CPU behavior in a different enclosure
Just for fun I have screencasted the thing
Chassi2: the good one
https://dl.dropboxusercontent.com/u/4395168/1.flv
https://dl.dropboxusercontent.com/u/4395168/1.gif
Chassi1: the bad one
https://dl.dropboxusercontent.com/u/4395168/2.flv
https://dl.dropboxusercontent.com/u/4395168/2.gif
Always same node, same ssd, same os, the only difference is the enclosure where the node is plugged
I'm back with my strange things
I always have 2 C6100 chassis, each with 4 nodes.
The L5520 have a cool function, it clock down to save power or it clock up (intel turbo mode) on the high demand.
The CPU play with his multiplier to change the CPU core frequency on the fly. Until now nothing new
In my C6100 the L5520 has a range of 12 to 17 multiplier. Turbo mode goes to 19.
When I use CPU-Z to check the beast, I'm happy to see the frequency varying from 1600mhz with a 12 to 2500 with a 19.
When I received the chassis I have benchmarked and stressed each node... Ans was soooo happy.
I had a very small fan issue and try to solve with a full firmware update ( mbc + fbc + bios). All was ok excepted in the chassi2, the fbc is a pic16 and I was not able to upgrade with the official c6100 firmware . I deal with this and pass my way.
Now the best part for those who have read to here
From a week, I have noticed a perf reduction on the node on wich I'm working. I benchmark back the node and ... The multiplier stay blocked @ 12 then @ 1600 MHz .
I have checked the bios, the os, the ram, deferent nodes... I boot always the same os on the same ssd.
Now the tricky part. If I take one node from the chassi1 and plug into the chassi2... The frequency vary well with the load. If I put back the node from the chassi2 to chassi1... The issue is back.
The only delta on both chassis is the fcb, the I rolled back the firmware of the chassi1 from 1.20 to 1.17 (was the original version for me)
Thanks for your help I'm not able to understand why a same node has a different CPU behavior in a different enclosure
Just for fun I have screencasted the thing
Chassi2: the good one
https://dl.dropboxusercontent.com/u/4395168/1.flv
https://dl.dropboxusercontent.com/u/4395168/1.gif
Chassi1: the bad one
https://dl.dropboxusercontent.com/u/4395168/2.flv
https://dl.dropboxusercontent.com/u/4395168/2.gif
Always same node, same ssd, same os, the only difference is the enclosure where the node is plugged
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