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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH 2 of 5] Add support for specifying multi cpumasks in cpus parameter
6 files changed, 74 insertions(+), 40 deletions(-)
tools/examples/xmexample.hvm | 9 ++--
tools/examples/xmexample.vti | 9 ++--
tools/examples/xmexample1 | 9 ++--
tools/examples/xmexample2 | 11 ++++-
tools/examples/xmexample3 | 12 +++--
tools/python/xen/xend/XendDomainInfo.py | 64 ++++++++++++++++++++-----------
# HG changeset patch
# User Ryan Harper <ryanh@xxxxxxxxxx>
# Date 1155579390 18000
# Node ID 7281c7aa89220b5bb20c9275a65dee37be6da298
# Parent 889b941effc8d050057a7edf3575067014e36d18
Add support for specifying multi cpumasks in cpus parameter
diff -r 889b941effc8 -r 7281c7aa8922 tools/examples/xmexample.hvm
--- a/tools/examples/xmexample.hvm Mon Aug 14 13:15:55 2006 -0500
+++ b/tools/examples/xmexample.hvm Mon Aug 14 13:16:30 2006 -0500
@@ -47,10 +47,11 @@ name = "ExampleHVMDomain"
# enable/disable HVM guest APIC, default=0 (disabled)
#apic=0
-# List of which CPUS this domain is allowed to use, default Xen picks
-#cpus = "" # leave to Xen to pick
-#cpus = "0" # all vcpus run on CPU0
-#cpus = "0-3,5,^1" # run on cpus 0,2,3,5
+# Specify which CPUS the domains' vcpus can use
+#cpus = "" # leave to Xen to pick
+#cpus = "0" # all vcpus run on CPU0
+#cpus = "0-3,5,^1" # all vcpus run on cpus 0,2,3,5
+#cpus = [ "0-1", "2-3" ] # VCPU0 on CPU0-1, VCPU1 on CPU2-3
# Optionally define mac and/or bridge for the network interfaces.
# Random MACs are assigned if not given.
diff -r 889b941effc8 -r 7281c7aa8922 tools/examples/xmexample.vti
--- a/tools/examples/xmexample.vti Mon Aug 14 13:15:55 2006 -0500
+++ b/tools/examples/xmexample.vti Mon Aug 14 13:16:30 2006 -0500
@@ -30,10 +30,11 @@ name = "ExampleVTIDomain"
# the number of cpus guest platform has, default=1
#vcpus=1
-# List of which CPUS this domain is allowed to use, default Xen picks
-#cpus = "" # leave to Xen to pick
-#cpus = "0" # all vcpus run on CPU0
-#cpus = "0-3,5,^1" # run on cpus 0,2,3,5
+# Specify which CPUS the domains' vcpus can use
+#cpus = "" # leave to Xen to pick
+#cpus = "0" # all vcpus run on CPU0
+#cpus = "0-3,5,^1" # all vcpus run on cpus 0,2,3,5
+#cpus = [ "0-1", "2-3" ] # VCPU0 on CPU0-1, VCPU1 on CPU2-3
# Optionally define mac and/or bridge for the network interfaces.
# Random MACs are assigned if not given.
diff -r 889b941effc8 -r 7281c7aa8922 tools/examples/xmexample1
--- a/tools/examples/xmexample1 Mon Aug 14 13:15:55 2006 -0500
+++ b/tools/examples/xmexample1 Mon Aug 14 13:16:30 2006 -0500
@@ -30,10 +30,11 @@ name = "ExampleDomain"
# on each call to 'xm create'.
#uuid = "06ed00fe-1162-4fc4-b5d8-11993ee4a8b9"
-# List of which CPUS this domain is allowed to use, default Xen picks
-#cpus = "" # leave to Xen to pick
-#cpus = "0" # all vcpus run on CPU0
-#cpus = "0-3,5,^1" # run on cpus 0,2,3,5
+# Specify which CPUS the domains' vcpus can use
+#cpus = "" # leave to Xen to pick
+#cpus = "0" # all vcpus run on CPU0
+#cpus = "0-3,5,^1" # all vcpus run on cpus 0,2,3,5
+#cpus = [ "0-1", "2-3" ] # VCPU0 on CPU0-1, VCPU1 on CPU2-3
# Number of Virtual CPUS to use, default is 1
#vcpus = 1
diff -r 889b941effc8 -r 7281c7aa8922 tools/examples/xmexample2
--- a/tools/examples/xmexample2 Mon Aug 14 13:15:55 2006 -0500
+++ b/tools/examples/xmexample2 Mon Aug 14 13:16:30 2006 -0500
@@ -59,11 +59,18 @@ name = "VM%d" % vmid
# on each call to 'xm create'.
#uuid = "06ed00fe-1162-4fc4-b5d8-11993ee4a8b9"
-# List of which CPUS this domain is allowed to use, default Xen picks
+# List of which CPUS vcpus are allowed to use, default Xen picks
#cpus = "" # leave to Xen to pick
#cpus = "0" # all vcpus run on CPU0
#cpus = "0-3,5,^1" # run on cpus 0,2,3,5
-#cpus = "%s" % vmid # set based on vmid (mod number of CPUs)
+#cpus = "0-1, 2-3" # run VCPU0 on CPU0-1, VCPU1 on CPU2-3
+
+# Specify which CPUS the domains' vcpus can use
+#cpus = "" # leave to Xen to pick
+#cpus = "0" # all vcpus run on CPU0
+#cpus = "0-3,5,^1" # all vcpus run on cpus 0,2,3,5
+#cpus = [ "0-1", "2-3" ] # VCPU0 on CPU0-1, VCPU1 on CPU2-3
+#cpus = "%s" % vmid # all vcpus run on CPU(vmid) (mod number of CPUs)
# Number of Virtual CPUS to use, default is 1
#vcpus = 1
diff -r 889b941effc8 -r 7281c7aa8922 tools/examples/xmexample3
--- a/tools/examples/xmexample3 Mon Aug 14 13:15:55 2006 -0500
+++ b/tools/examples/xmexample3 Mon Aug 14 13:16:30 2006 -0500
@@ -59,11 +59,13 @@ name = "VM%d" % vmid
# on each call to 'xm create'.
#uuid = "06ed00fe-1162-4fc4-b5d8-11993ee4a8b9"
-# List of which CPUS this domain is allowed to use, default Xen picks
-#cpus = "" # leave to Xen to pick
-#cpus = "0" # all vcpus run on CPU0
-#cpus = "0-3,5,^1" # run on cpus 0,2,3,5
-cpus = "%s" % vmid # set based on vmid (mod number of CPUs)
+# Specify which CPUS the domains' vcpus can use
+#cpus = "" # leave to Xen to pick
+#cpus = "0" # all vcpus run on CPU0
+#cpus = "0-3,5,^1" # all vcpus run on cpus 0,2,3,5
+#cpus = [ "0-1", "2-3" ] # VCPU0 on CPU0-1, VCPU1 on CPU2-3
+cpus = "%s" % vmid # all vcpus run on CPU(vmid) (mod number of CPUs)
+
#----------------------------------------------------------------------------
# Define network interfaces.
diff -r 889b941effc8 -r 7281c7aa8922 tools/python/xen/xend/XendDomainInfo.py
--- a/tools/python/xen/xend/XendDomainInfo.py Mon Aug 14 13:15:55 2006 -0500
+++ b/tools/python/xen/xend/XendDomainInfo.py Mon Aug 14 13:16:30 2006 -0500
@@ -328,27 +328,47 @@ def parseConfig(config):
else:
result['cpus'] = str(result['cpu'])
- # convert 'cpus' string to list of ints
- # 'cpus' supports a list of ranges (0-3), seperated by
- # commas, and negation, (^1).
- # Precedence is settled by order of the string:
- # "0-3,^1" -> [0,2,3]
- # "0-3,^1,1" -> [0,1,2,3]
- if result['cpus']:
- cpus = []
- for c in result['cpus'].split(','):
- if c.find('-') != -1:
- (x,y) = c.split('-')
- for i in range(int(x),int(y)+1):
- cpus.append(int(i))
- else:
- # remove this element from the list
- if c[0] == '^':
- cpus = [x for x in cpus if x != int(c[1:])]
+ if result['cpus'] is not None:
+ # see if cpus string specifies multiple cpumasks, or just one
+ # e.g: "[ '2-5', '0-1', '0-3,^1', '5' ]" vs. "0-3,5"
+ if result['cpus'].startswith("["):
+ # the below was tested with the following sample string
+ # "[4, '2-5','2-5', '1-3,6,^2', '2-6','1' 1-7,^2 ]" and
resulted in
+ # ['4', '2-5', '2-5', '1-3,6,^2', '2-6', '1']
+ result['cpus'] = filter(lambda x: len(x), map(lambda x:
x.strip(", "),
+
result['cpus'].replace('[',"").replace(']',"").split("'")))
+
+ # convert non list-base value into list of cpumasks
+ # cpus = "4|2-5,^4|1-3,5,^2|1|^2" ->
+ # ['4', '2-5,^4', '1-3,5,^2', '1', '^2']
+ # also takes care of cpus = "4"
+ else:
+ result['cpus'] = result['cpus'].split("|")
+
+ # convert 'cpus' list of strings into a list of list of ints
+ # 'cpus' supports a list of ranges (0-3), seperated by
+ # commas, and negation, (^1).
+ # Precedence is settled by order of the string:
+ # "0-3,^1" -> [0,2,3]
+ # "0-3,^1,1" -> [0,1,2,3]
+ new_cpus = []
+ for x in result['cpus']:
+ cpus = []
+ for c in x.split(','):
+ if c.find('-') != -1:
+ (x,y) = c.split('-')
+ for i in range(int(x),int(y)+1):
+ cpus.append(int(i))
else:
- cpus.append(int(c))
-
- result['cpus'] = cpus
+ # remove this element from the list
+ if c[0] == '^':
+ cpus = [x for x in cpus if x != int(c[1:])]
+ else:
+ cpus.append(int(c))
+
+ new_cpus.append(cpus)
+
+ result['cpus'] = new_cpus
except ValueError, exn:
raise VmError(
@@ -1274,7 +1294,9 @@ class XendDomainInfo:
# distribution for NUMA systems.
if self.info['cpus'] is not None and len(self.info['cpus']) > 0:
for v in range(0, self.info['max_vcpu_id']+1):
- xc.vcpu_setaffinity(self.domid, v, self.info['cpus'])
+ # map each vcpu to a cpumask in the list
+ cpumask = self.info['cpus'][v % len(self.info['cpus'])]
+ xc.vcpu_setaffinity(self.domid, v, cpumask)
# set domain maxmem in KiB
xc.domain_setmaxmem(self.domid, self.info['maxmem'] * 1024)
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