[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Xen-devel] libvirt support for scheduler credit2
- To: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Kevin Stange <kevin@xxxxxxxxxxxxx>
- Date: Tue, 21 Jan 2020 10:56:14 -0600
- Autocrypt: addr=kevin@xxxxxxxxxxxxx; prefer-encrypt=mutual; keydata= mQGiBEHoVBYRBACgNUrSLbbGAzxmsG5nd5KNoJXVwD8/FgxiYweLHrCHGrGEruEuknqoRFGs 0SBLBLQuZjeO+KUtgTV6T+xLIoJgrDPHmhU0qYZZj8WUM3Dg+tt15eD58BRt/OltMdWPUXwy lzGTZhCrHFFeo1H1YseweI6b7QEuroklHrDWWPt3IwCgn5mlOVyUhjwqanaCYgbzdrWNZGcD /iXOCfRfAJpUhP7GxA4JB8vpSkxZETQxhpa+mNtqbnq1oJyNgONj56x7jbGOAmnjfazG68cJ kRxQ7t4J1A1QkjogeHrKgAPE7p6MCQs/h0cGHaj52VxOcw3fTKZxxW7JiuOjKmdqn/jSnVlN OGEm4PM02pEhc/otWf80TxHHbiCxBACSZZz5p43Kq3kTbTbW+gnNcL6Je7mNvKW7qUthBvmv HzU5wERvaGgEii76hA8CNXuMmOp00H98iJh5mgfzI3+1gO9HJjFuA9sg04eAKTcRNruW7lYF X6pGffEdeogM+bxm7mcbegyBVvWdGP7K3WKC50Vmjkn7mxSJxnA4vIcdQ7Q3S2V2aW4gU3Rh bmdlIChTdGVhZGZhc3QgTmV0d29ya3MpIDxrZXZpbkBzdGVhZGZhc3QubmV0PohfBBMRAgAf AhsDAh4BAheABQJIwdxjBgsJCAcDAgQVAggDAxYCAQAKCRCR38Gh4qODSNfdAJ9bOiF7IrIm R0q8Wb4o0SJqw45m5gCfWukZU6ScRP9xU1CuQnQ8rCqtVvW5Ag0EQehUGxAIALNp0GIzBv1n nILS1pBoQntIl+Q7Ey/K7UUvbOOPfDoa67YZRCq7Qlf8MwNRUZFmZkm3aEHjZn77JqBA4FKa MRGoEjXDgaNL4aAAo14OrexgomogU6TQk1yPNmcY0ImFDdVn8Pm7G21hcwgiDnO7cy4yNcyf 6pnL82j0cOWifeJlPU9Tu0jf2iXrd6sYLxRlFL0JrvzNhjcC200TK9RHObsNnsVSQGTjRrb+ pyAIG4LT98cWNj6jsRAotMxN1Rlm9GfK/I3okBC3Wu4qiWgNwdadrrM4rh28de/p22QyaXjk XKfRDhwFw7DbBHBY+o58QQTyy24VsDGbOt57fyvCmz8AAwUH/AhoYm0tGUm3td2Gk+wx3FUK 7TDL8Jt65TAYBMFwk70PCEgKBJdJ0MKdnCmW5qhzuPkT2iexIYhj5RUHayqPz9NWegSHCDjy Du1ozxns3rTAzAGIqGmPnuhndv7GyqJksmHFqTouOmqNVQzqGtC6eI1zpf+R+LWqHYzknS3x 7cw67eMgXO8x15lKSnK4oCmGoG6/69lthouwFJAwztUW/Iy6wPHShhEDAYyIdZcG5c4cFG4M Blb1rt3neJiUQfjrciRw/lEWKSoxGDZzxS0qA849IW4rfJkKyOPPSaH0ZrRsTq3M4AdcA42v 1Fm2/B9k1Je97ZP0PVW3hiVUv0q5VFqISQQYEQIACQUCQehUGwIbDAAKCRCR38Gh4qODSKp1 AKCY44btwb7f/4c4Ne0G3OEGTpdXEACeJ3XO66Ly3snOfSDddcnYDvzTykE=
- Delivery-date: Tue, 21 Jan 2020 16:56:26 +0000
- Dkim-filter: OpenDKIM Filter v2.10.3 staffmx.steadfast.net AEEA414807BD
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,
I looked around a bit and wasn't able to find a good answer to this, so
George suggested I ask here.
Since Xen 4.12, credit2 is the default scheduler, but at least as of
libvirt 5.1.0 virsh doesn't appear to understand credit2 and produces
this sort of output:
# xl sched-credit2 -d yw6hk7mo6zy3k8
Name ID Weight Cap
yw6hk7mo6zy3k8 4 10 0
# virsh schedinfo yw6hk7mo6zy3k8
Scheduler : credit2
Compared to a host running credit:
# xl sched-credit -d gvz2b16sq38dv9
Name ID Weight Cap
gvz2b16sq38dv9 14 800 0
# virsh schedinfo gvz2b16sq38dv9
Scheduler : credit
weight : 800
cap : 0
Trying to change the weight does nothing, not even producing an error
message:
# virsh schedinfo syuxplsmdihcwc --weight 300
Scheduler : credit2
# xl sched-credit2 -d syuxplsmdihcwc
Name ID Weight Cap
syuxplsmdihcwc 23 400 0
Is there a version of libvirt where I can expect this to work, or is it
not supported yet? As a workaround for now I've added sched=credit to
my command line, but it would be nice to gain the benefits of improved
scheduling at some point.
--
Kevin Stange
Chief Technology Officer
Steadfast | Managed Infrastructure, Datacenter and Cloud Services
800 S Wells, Suite 190 | Chicago, IL 60607
312.602.2689 X203 | Fax: 312.602.2688
kevin@xxxxxxxxxxxxx | www.steadfast.net
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel
|
