Hi Chao,
I'm Meng Xu from the University of Pennsylvania.
We purchased a computer that has Intel(R) Xeon(R) CPU E5-2618L
v3 @ 2.30GHz inside.
According to
http://www.intel.com/content/www/us/en/communications/cache-monitoring-cache-allocation-technologies.html,
Intel E5-2618L v3 should support both CAT and CMT.
I'm playing the latest Xen on the machine to evaluate how CAT
and CMT work
â.â
The commit point I used is in the staging branch, commit
7b99717f62caeac08eea224a177cd28f047ac4b5, which was push on Aug.
17th, 2015.
I checked that the branch has merged your code.
After I boot up the system, I tried the following commands and
it shows some errors.
â***â
My question is
â***â
:
1) Is there any specific BIOS configuration I need to configure?
2) The CMT is not enabled by default. Do I need to issue any
command to enable it? I didn't find any document about how to
enable it, according to
http://xenbits.xen.org/docs/unstable-staging/misc/xl-psr.html.
:-(
3) I'm not 100% sure if this machine we purchased supports the
CAT. Right now, it shows "No such device" on the machine.
â But it may probably
because the hypervisor forgot to initialize it?â
Below is the details of what I tried:
# xl psr-hwinfo
Cache Monitoring Technology (CMT):
Enabled     : 0
Cache Allocation Technology (CAT):
libxl: error: libxl_psr.c:96:libxl__psr_cat_log_err_msg: CAT is
not supported in this system: No such device
Failed to get cat info
#xl psr-cmt-attach 0
libxl: error: libxl_psr.c:70:libxl__psr_cmt_log_err_msg: CMT is
not supported in this system: No such device
Please let me know if you need any further information to
confirm if the machine support the CAT or if it's because there
is some issue with the software layer. :-)
Thank you very much for your time and help in this question!
Best regards,
Meng
