sched_bvt_ctxallow_help = """sched-bvt-ctxallow <Allow> Set the BVT scheduler context switch
allowance"""
sched_sedf_help = "sched-sedf [DOM] [OPTIONS] Show|Set simple EDF parameters\n" + \
-" -p, --period Relative deadline(ns).\n\
- -s, --slice Worst-case execution time(ns) (slice < period).\n\
- -l, --latency scaled period(ns) in case the domain is doing\n\
- heavy I/O.\n\
+" -p, --period Relative deadline(ms).\n\
+ -s, --slice Worst-case execution time(ms)\n\
+ (slice < period).\n\
+ -l, --latency scaled period(ms) in case the domain\n\
+ is doing heavy I/O.\n\
-e, --extra flag (0/1) which controls whether the\n\
domain can run in extra-time\n\
-w, --weight mutually exclusive with period/slice and\n\
server.xend_node_cpu_bvt_slice_set(slice)
def xm_sched_sedf(args):
+ def ns_to_ms(val):
+ return float(val) * 0.000001
+
+ def ms_to_ns(val):
+ return (float(val) / 0.000001)
+
def print_sedf(info):
- print( ("%(name)-32s %(dom)3d %(period)12d %(slice)12d %(latency)12d" +
- " %(extratime)10d %(weight)7d") % info)
+ info['period'] = ns_to_ms(info['period'])
+ info['slice'] = ns_to_ms(info['slice'])
+ info['latency'] = ns_to_ms(info['latency'])
+ print( ("%(name)-32s %(dom)3d %(period)9.1f %(slice)9.1f" +
+ " %(latency)7.1f %(extratime)6d %(weight)6d") % info)
- # FIXME: this can probably go away if someone points me to the proper way.
def domid_match(domid, info):
- d = ""
- f = ""
- try:
- d = int(domid)
- f = 'dom'
- except:
- d = domid
- f = 'name'
+ return domid is None or domid == info['name'] or domid == str(info['dom'])
- return (d == info[f])
-
# we want to just display current info if no parameters are passed
if len(args) == 0:
- domid = '-1'
+ domid = None
else:
# we expect at least a domain id (name or number)
# and at most a domid up to 5 options with values
err(opterr)
sys.exit(1)
+ # convert to nanoseconds if needed
for (k, v) in options:
if k in ['-p', '--period']:
- opts['period'] = v
+ opts['period'] = ms_to_ns(v)
elif k in ['-s', '--slice']:
- opts['slice'] = v
+ opts['slice'] = ms_to_ns(v)
elif k in ['-l', '--latency']:
- opts['latency'] = v
+ opts['latency'] = ms_to_ns(v)
elif k in ['-e', '--extratime']:
opts['extratime'] = v
elif k in ['-w', '--weight']:
# print header if we aren't setting any parameters
if len(opts.keys()) == 0:
- print '%-33s %-8s %-13s %-10s %-8s %-10s %-6s' %('Name','ID','Period',
- 'Slice', 'Latency',
- 'ExtraTime','Weight')
+ print '%-33s %-2s %-4s %-4s %-7s %-5s %-6s'%('Name','ID','Period(ms)',
+ 'Slice(ms)', 'Lat(ms)',
+ 'Extra','Weight')
from xen.xend.XendClient import server
- for dom in getDomains(""):
- d = parse_doms_info(dom)
-
- if domid == '-1' or domid_match(domid, d):
-
- # fetch current values so as not to clobber them
- sedf_info = \
- parse_sedf_info(server.xend_domain_cpu_sedf_get(d['dom']))
- sedf_info['name'] = d['name']
-
- # update values in case of call to set
- if len(opts.keys()) > 0:
- for k in opts.keys():
- sedf_info[k]=opts[k]
-
- # send the update
- v = map(int, [sedf_info['period'], sedf_info['slice'],
- sedf_info['latency'], sedf_info['extratime'],
- sedf_info['weight']])
- rv = server.xend_domain_cpu_sedf_set(d['dom'], *v)
- if int(rv) != 0:
- err("Failed to set sedf parameters (rv=%d)."%(rv))
-
- # not setting values, display info
- else:
- print_sedf(sedf_info)
+ doms = filter(lambda x : domid_match(domid, x),
+ [parse_doms_info(dom) for dom in getDomains("")])
+ for d in doms:
+ # fetch current values so as not to clobber them
+ sedf_info = \
+ parse_sedf_info(server.xend_domain_cpu_sedf_get(d['dom']))
+ sedf_info['name'] = d['name']
+
+ # update values in case of call to set
+ if len(opts.keys()) > 0:
+ for k in opts.keys():
+ sedf_info[k]=opts[k]
+
+ # send the update, converting user input
+ v = map(int, [sedf_info['period'], sedf_info['slice'],
+ sedf_info['latency'],sedf_info['extratime'],
+ sedf_info['weight']])
+ rv = server.xend_domain_cpu_sedf_set(d['dom'], *v)
+ if int(rv) != 0:
+ err("Failed to set sedf parameters (rv=%d)."%(rv))
+
+ # not setting values, display info
+ else:
+ print_sedf(sedf_info)
def xm_info(args):
# NB: setting period requires non-zero slice
# scale current period in half
-period = str(int(p) / 2)
-slice = str(int(p) / 4)
+period = str(float(p) / 2)
+slice = str(float(p) / 4)
opts = "%s -p %s -s %s" %(domain.getName(), period, slice)
(status, output) = traceCommand("xm sched-sedf %s" %(opts))
(name,domid,p1,s1,l1,e1,w1) = params
if p1 != period:
- FAIL("Failed to change domain period from %d to %d" %(p, period))
+ FAIL("Failed to change domain period from %f to %f" %(p, period))
if s1 != slice:
- FAIL("Failed to change domain slice from %d to %d" %(s, slice))
+ FAIL("Failed to change domain slice from %f to %f" %(s, slice))
# Stop the domain (nice shutdown)
domain.stop()
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