mirror of
https://github.com/qemu/qemu.git
synced 2024-12-13 22:43:32 +08:00
c5854acb75
Add s390_exit_reasons so kvm_stat doesn't crash when called on s390. Look for 'vendor_id' in /proc/cpuinfo as well, instead of just for 'flags', so we can determine if we run on S390. Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
505 lines
14 KiB
Python
Executable File
505 lines
14 KiB
Python
Executable File
#!/usr/bin/python
|
|
#
|
|
# top-like utility for displaying kvm statistics
|
|
#
|
|
# Copyright 2006-2008 Qumranet Technologies
|
|
# Copyright 2008-2011 Red Hat, Inc.
|
|
#
|
|
# Authors:
|
|
# Avi Kivity <avi@redhat.com>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPL, version 2. See
|
|
# the COPYING file in the top-level directory.
|
|
|
|
import curses
|
|
import sys, os, time, optparse
|
|
|
|
class DebugfsProvider(object):
|
|
def __init__(self):
|
|
self.base = '/sys/kernel/debug/kvm'
|
|
self._fields = os.listdir(self.base)
|
|
def fields(self):
|
|
return self._fields
|
|
def select(self, fields):
|
|
self._fields = fields
|
|
def read(self):
|
|
def val(key):
|
|
return int(file(self.base + '/' + key).read())
|
|
return dict([(key, val(key)) for key in self._fields])
|
|
|
|
vmx_exit_reasons = {
|
|
0: 'EXCEPTION_NMI',
|
|
1: 'EXTERNAL_INTERRUPT',
|
|
2: 'TRIPLE_FAULT',
|
|
7: 'PENDING_INTERRUPT',
|
|
8: 'NMI_WINDOW',
|
|
9: 'TASK_SWITCH',
|
|
10: 'CPUID',
|
|
12: 'HLT',
|
|
14: 'INVLPG',
|
|
15: 'RDPMC',
|
|
16: 'RDTSC',
|
|
18: 'VMCALL',
|
|
19: 'VMCLEAR',
|
|
20: 'VMLAUNCH',
|
|
21: 'VMPTRLD',
|
|
22: 'VMPTRST',
|
|
23: 'VMREAD',
|
|
24: 'VMRESUME',
|
|
25: 'VMWRITE',
|
|
26: 'VMOFF',
|
|
27: 'VMON',
|
|
28: 'CR_ACCESS',
|
|
29: 'DR_ACCESS',
|
|
30: 'IO_INSTRUCTION',
|
|
31: 'MSR_READ',
|
|
32: 'MSR_WRITE',
|
|
33: 'INVALID_STATE',
|
|
36: 'MWAIT_INSTRUCTION',
|
|
39: 'MONITOR_INSTRUCTION',
|
|
40: 'PAUSE_INSTRUCTION',
|
|
41: 'MCE_DURING_VMENTRY',
|
|
43: 'TPR_BELOW_THRESHOLD',
|
|
44: 'APIC_ACCESS',
|
|
48: 'EPT_VIOLATION',
|
|
49: 'EPT_MISCONFIG',
|
|
54: 'WBINVD',
|
|
55: 'XSETBV',
|
|
}
|
|
|
|
svm_exit_reasons = {
|
|
0x000: 'READ_CR0',
|
|
0x003: 'READ_CR3',
|
|
0x004: 'READ_CR4',
|
|
0x008: 'READ_CR8',
|
|
0x010: 'WRITE_CR0',
|
|
0x013: 'WRITE_CR3',
|
|
0x014: 'WRITE_CR4',
|
|
0x018: 'WRITE_CR8',
|
|
0x020: 'READ_DR0',
|
|
0x021: 'READ_DR1',
|
|
0x022: 'READ_DR2',
|
|
0x023: 'READ_DR3',
|
|
0x024: 'READ_DR4',
|
|
0x025: 'READ_DR5',
|
|
0x026: 'READ_DR6',
|
|
0x027: 'READ_DR7',
|
|
0x030: 'WRITE_DR0',
|
|
0x031: 'WRITE_DR1',
|
|
0x032: 'WRITE_DR2',
|
|
0x033: 'WRITE_DR3',
|
|
0x034: 'WRITE_DR4',
|
|
0x035: 'WRITE_DR5',
|
|
0x036: 'WRITE_DR6',
|
|
0x037: 'WRITE_DR7',
|
|
0x040: 'EXCP_BASE',
|
|
0x060: 'INTR',
|
|
0x061: 'NMI',
|
|
0x062: 'SMI',
|
|
0x063: 'INIT',
|
|
0x064: 'VINTR',
|
|
0x065: 'CR0_SEL_WRITE',
|
|
0x066: 'IDTR_READ',
|
|
0x067: 'GDTR_READ',
|
|
0x068: 'LDTR_READ',
|
|
0x069: 'TR_READ',
|
|
0x06a: 'IDTR_WRITE',
|
|
0x06b: 'GDTR_WRITE',
|
|
0x06c: 'LDTR_WRITE',
|
|
0x06d: 'TR_WRITE',
|
|
0x06e: 'RDTSC',
|
|
0x06f: 'RDPMC',
|
|
0x070: 'PUSHF',
|
|
0x071: 'POPF',
|
|
0x072: 'CPUID',
|
|
0x073: 'RSM',
|
|
0x074: 'IRET',
|
|
0x075: 'SWINT',
|
|
0x076: 'INVD',
|
|
0x077: 'PAUSE',
|
|
0x078: 'HLT',
|
|
0x079: 'INVLPG',
|
|
0x07a: 'INVLPGA',
|
|
0x07b: 'IOIO',
|
|
0x07c: 'MSR',
|
|
0x07d: 'TASK_SWITCH',
|
|
0x07e: 'FERR_FREEZE',
|
|
0x07f: 'SHUTDOWN',
|
|
0x080: 'VMRUN',
|
|
0x081: 'VMMCALL',
|
|
0x082: 'VMLOAD',
|
|
0x083: 'VMSAVE',
|
|
0x084: 'STGI',
|
|
0x085: 'CLGI',
|
|
0x086: 'SKINIT',
|
|
0x087: 'RDTSCP',
|
|
0x088: 'ICEBP',
|
|
0x089: 'WBINVD',
|
|
0x08a: 'MONITOR',
|
|
0x08b: 'MWAIT',
|
|
0x08c: 'MWAIT_COND',
|
|
0x400: 'NPF',
|
|
}
|
|
|
|
s390_exit_reasons = {
|
|
0x000: 'UNKNOWN',
|
|
0x001: 'EXCEPTION',
|
|
0x002: 'IO',
|
|
0x003: 'HYPERCALL',
|
|
0x004: 'DEBUG',
|
|
0x005: 'HLT',
|
|
0x006: 'MMIO',
|
|
0x007: 'IRQ_WINDOW_OPEN',
|
|
0x008: 'SHUTDOWN',
|
|
0x009: 'FAIL_ENTRY',
|
|
0x010: 'INTR',
|
|
0x011: 'SET_TPR',
|
|
0x012: 'TPR_ACCESS',
|
|
0x013: 'S390_SIEIC',
|
|
0x014: 'S390_RESET',
|
|
0x015: 'DCR',
|
|
0x016: 'NMI',
|
|
0x017: 'INTERNAL_ERROR',
|
|
0x018: 'OSI',
|
|
0x019: 'PAPR_HCALL',
|
|
}
|
|
|
|
vendor_exit_reasons = {
|
|
'vmx': vmx_exit_reasons,
|
|
'svm': svm_exit_reasons,
|
|
'IBM/S390': s390_exit_reasons,
|
|
}
|
|
|
|
exit_reasons = None
|
|
|
|
for line in file('/proc/cpuinfo').readlines():
|
|
if line.startswith('flags') or line.startswith('vendor_id'):
|
|
for flag in line.split():
|
|
if flag in vendor_exit_reasons:
|
|
exit_reasons = vendor_exit_reasons[flag]
|
|
|
|
filters = {
|
|
'kvm_exit': ('exit_reason', exit_reasons)
|
|
}
|
|
|
|
def invert(d):
|
|
return dict((x[1], x[0]) for x in d.iteritems())
|
|
|
|
for f in filters:
|
|
filters[f] = (filters[f][0], invert(filters[f][1]))
|
|
|
|
import ctypes, struct, array
|
|
|
|
libc = ctypes.CDLL('libc.so.6')
|
|
syscall = libc.syscall
|
|
class perf_event_attr(ctypes.Structure):
|
|
_fields_ = [('type', ctypes.c_uint32),
|
|
('size', ctypes.c_uint32),
|
|
('config', ctypes.c_uint64),
|
|
('sample_freq', ctypes.c_uint64),
|
|
('sample_type', ctypes.c_uint64),
|
|
('read_format', ctypes.c_uint64),
|
|
('flags', ctypes.c_uint64),
|
|
('wakeup_events', ctypes.c_uint32),
|
|
('bp_type', ctypes.c_uint32),
|
|
('bp_addr', ctypes.c_uint64),
|
|
('bp_len', ctypes.c_uint64),
|
|
]
|
|
def _perf_event_open(attr, pid, cpu, group_fd, flags):
|
|
return syscall(298, ctypes.pointer(attr), ctypes.c_int(pid),
|
|
ctypes.c_int(cpu), ctypes.c_int(group_fd),
|
|
ctypes.c_long(flags))
|
|
|
|
PERF_TYPE_HARDWARE = 0
|
|
PERF_TYPE_SOFTWARE = 1
|
|
PERF_TYPE_TRACEPOINT = 2
|
|
PERF_TYPE_HW_CACHE = 3
|
|
PERF_TYPE_RAW = 4
|
|
PERF_TYPE_BREAKPOINT = 5
|
|
|
|
PERF_SAMPLE_IP = 1 << 0
|
|
PERF_SAMPLE_TID = 1 << 1
|
|
PERF_SAMPLE_TIME = 1 << 2
|
|
PERF_SAMPLE_ADDR = 1 << 3
|
|
PERF_SAMPLE_READ = 1 << 4
|
|
PERF_SAMPLE_CALLCHAIN = 1 << 5
|
|
PERF_SAMPLE_ID = 1 << 6
|
|
PERF_SAMPLE_CPU = 1 << 7
|
|
PERF_SAMPLE_PERIOD = 1 << 8
|
|
PERF_SAMPLE_STREAM_ID = 1 << 9
|
|
PERF_SAMPLE_RAW = 1 << 10
|
|
|
|
PERF_FORMAT_TOTAL_TIME_ENABLED = 1 << 0
|
|
PERF_FORMAT_TOTAL_TIME_RUNNING = 1 << 1
|
|
PERF_FORMAT_ID = 1 << 2
|
|
PERF_FORMAT_GROUP = 1 << 3
|
|
|
|
import re
|
|
|
|
sys_tracing = '/sys/kernel/debug/tracing'
|
|
|
|
class Group(object):
|
|
def __init__(self, cpu):
|
|
self.events = []
|
|
self.group_leader = None
|
|
self.cpu = cpu
|
|
def add_event(self, name, event_set, tracepoint, filter = None):
|
|
self.events.append(Event(group = self,
|
|
name = name, event_set = event_set,
|
|
tracepoint = tracepoint, filter = filter))
|
|
if len(self.events) == 1:
|
|
self.file = os.fdopen(self.events[0].fd)
|
|
def read(self):
|
|
bytes = 8 * (1 + len(self.events))
|
|
fmt = 'xxxxxxxx' + 'q' * len(self.events)
|
|
return dict(zip([event.name for event in self.events],
|
|
struct.unpack(fmt, self.file.read(bytes))))
|
|
|
|
class Event(object):
|
|
def __init__(self, group, name, event_set, tracepoint, filter = None):
|
|
self.name = name
|
|
attr = perf_event_attr()
|
|
attr.type = PERF_TYPE_TRACEPOINT
|
|
attr.size = ctypes.sizeof(attr)
|
|
id_path = os.path.join(sys_tracing, 'events', event_set,
|
|
tracepoint, 'id')
|
|
id = int(file(id_path).read())
|
|
attr.config = id
|
|
attr.sample_type = (PERF_SAMPLE_RAW
|
|
| PERF_SAMPLE_TIME
|
|
| PERF_SAMPLE_CPU)
|
|
attr.sample_period = 1
|
|
attr.read_format = PERF_FORMAT_GROUP
|
|
group_leader = -1
|
|
if group.events:
|
|
group_leader = group.events[0].fd
|
|
fd = _perf_event_open(attr, -1, group.cpu, group_leader, 0)
|
|
if fd == -1:
|
|
raise Exception('perf_event_open failed')
|
|
if filter:
|
|
import fcntl
|
|
fcntl.ioctl(fd, 0x40082406, filter)
|
|
self.fd = fd
|
|
def enable(self):
|
|
import fcntl
|
|
fcntl.ioctl(self.fd, 0x00002400, 0)
|
|
def disable(self):
|
|
import fcntl
|
|
fcntl.ioctl(self.fd, 0x00002401, 0)
|
|
|
|
class TracepointProvider(object):
|
|
def __init__(self):
|
|
path = os.path.join(sys_tracing, 'events', 'kvm')
|
|
fields = [f
|
|
for f in os.listdir(path)
|
|
if os.path.isdir(os.path.join(path, f))]
|
|
extra = []
|
|
for f in fields:
|
|
if f in filters:
|
|
subfield, values = filters[f]
|
|
for name, number in values.iteritems():
|
|
extra.append(f + '(' + name + ')')
|
|
fields += extra
|
|
self._setup(fields)
|
|
self.select(fields)
|
|
def fields(self):
|
|
return self._fields
|
|
def _setup(self, _fields):
|
|
self._fields = _fields
|
|
cpure = r'cpu([0-9]+)'
|
|
self.cpus = [int(re.match(cpure, x).group(1))
|
|
for x in os.listdir('/sys/devices/system/cpu')
|
|
if re.match(cpure, x)]
|
|
import resource
|
|
nfiles = len(self.cpus) * 1000
|
|
resource.setrlimit(resource.RLIMIT_NOFILE, (nfiles, nfiles))
|
|
events = []
|
|
self.group_leaders = []
|
|
for cpu in self.cpus:
|
|
group = Group(cpu)
|
|
for name in _fields:
|
|
tracepoint = name
|
|
filter = None
|
|
m = re.match(r'(.*)\((.*)\)', name)
|
|
if m:
|
|
tracepoint, sub = m.groups()
|
|
filter = '%s==%d\0' % (filters[tracepoint][0],
|
|
filters[tracepoint][1][sub])
|
|
event = group.add_event(name, event_set = 'kvm',
|
|
tracepoint = tracepoint,
|
|
filter = filter)
|
|
self.group_leaders.append(group)
|
|
def select(self, fields):
|
|
for group in self.group_leaders:
|
|
for event in group.events:
|
|
if event.name in fields:
|
|
event.enable()
|
|
else:
|
|
event.disable()
|
|
def read(self):
|
|
from collections import defaultdict
|
|
ret = defaultdict(int)
|
|
for group in self.group_leaders:
|
|
for name, val in group.read().iteritems():
|
|
ret[name] += val
|
|
return ret
|
|
|
|
class Stats:
|
|
def __init__(self, provider, fields = None):
|
|
self.provider = provider
|
|
self.fields_filter = fields
|
|
self._update()
|
|
def _update(self):
|
|
def wanted(key):
|
|
import re
|
|
if not self.fields_filter:
|
|
return True
|
|
return re.match(self.fields_filter, key) is not None
|
|
self.values = dict([(key, None)
|
|
for key in provider.fields()
|
|
if wanted(key)])
|
|
self.provider.select(self.values.keys())
|
|
def set_fields_filter(self, fields_filter):
|
|
self.fields_filter = fields_filter
|
|
self._update()
|
|
def get(self):
|
|
new = self.provider.read()
|
|
for key in self.provider.fields():
|
|
oldval = self.values.get(key, (0, 0))
|
|
newval = new[key]
|
|
newdelta = None
|
|
if oldval is not None:
|
|
newdelta = newval - oldval[0]
|
|
self.values[key] = (newval, newdelta)
|
|
return self.values
|
|
|
|
if not os.access('/sys/kernel/debug', os.F_OK):
|
|
print 'Please enable CONFIG_DEBUG_FS in your kernel'
|
|
sys.exit(1)
|
|
if not os.access('/sys/kernel/debug/kvm', os.F_OK):
|
|
print "Please mount debugfs ('mount -t debugfs debugfs /sys/kernel/debug')"
|
|
print "and ensure the kvm modules are loaded"
|
|
sys.exit(1)
|
|
|
|
label_width = 40
|
|
number_width = 10
|
|
|
|
def tui(screen, stats):
|
|
curses.use_default_colors()
|
|
curses.noecho()
|
|
drilldown = False
|
|
fields_filter = stats.fields_filter
|
|
def update_drilldown():
|
|
if not fields_filter:
|
|
if drilldown:
|
|
stats.set_fields_filter(None)
|
|
else:
|
|
stats.set_fields_filter(r'^[^\(]*$')
|
|
update_drilldown()
|
|
def refresh(sleeptime):
|
|
screen.erase()
|
|
screen.addstr(0, 0, 'kvm statistics')
|
|
row = 2
|
|
s = stats.get()
|
|
def sortkey(x):
|
|
if s[x][1]:
|
|
return (-s[x][1], -s[x][0])
|
|
else:
|
|
return (0, -s[x][0])
|
|
for key in sorted(s.keys(), key = sortkey):
|
|
if row >= screen.getmaxyx()[0]:
|
|
break
|
|
values = s[key]
|
|
if not values[0] and not values[1]:
|
|
break
|
|
col = 1
|
|
screen.addstr(row, col, key)
|
|
col += label_width
|
|
screen.addstr(row, col, '%10d' % (values[0],))
|
|
col += number_width
|
|
if values[1] is not None:
|
|
screen.addstr(row, col, '%8d' % (values[1] / sleeptime,))
|
|
row += 1
|
|
screen.refresh()
|
|
|
|
sleeptime = 0.25
|
|
while True:
|
|
refresh(sleeptime)
|
|
curses.halfdelay(int(sleeptime * 10))
|
|
sleeptime = 3
|
|
try:
|
|
c = screen.getkey()
|
|
if c == 'x':
|
|
drilldown = not drilldown
|
|
update_drilldown()
|
|
if c == 'q':
|
|
break
|
|
except KeyboardInterrupt:
|
|
break
|
|
except curses.error:
|
|
continue
|
|
|
|
def batch(stats):
|
|
s = stats.get()
|
|
time.sleep(1)
|
|
s = stats.get()
|
|
for key in sorted(s.keys()):
|
|
values = s[key]
|
|
print '%-22s%10d%10d' % (key, values[0], values[1])
|
|
|
|
def log(stats):
|
|
keys = sorted(stats.get().iterkeys())
|
|
def banner():
|
|
for k in keys:
|
|
print '%10s' % k[0:9],
|
|
print
|
|
def statline():
|
|
s = stats.get()
|
|
for k in keys:
|
|
print ' %9d' % s[k][1],
|
|
print
|
|
line = 0
|
|
banner_repeat = 20
|
|
while True:
|
|
time.sleep(1)
|
|
if line % banner_repeat == 0:
|
|
banner()
|
|
statline()
|
|
line += 1
|
|
|
|
options = optparse.OptionParser()
|
|
options.add_option('-1', '--once', '--batch',
|
|
action = 'store_true',
|
|
default = False,
|
|
dest = 'once',
|
|
help = 'run in batch mode for one second',
|
|
)
|
|
options.add_option('-l', '--log',
|
|
action = 'store_true',
|
|
default = False,
|
|
dest = 'log',
|
|
help = 'run in logging mode (like vmstat)',
|
|
)
|
|
options.add_option('-f', '--fields',
|
|
action = 'store',
|
|
default = None,
|
|
dest = 'fields',
|
|
help = 'fields to display (regex)',
|
|
)
|
|
(options, args) = options.parse_args(sys.argv)
|
|
|
|
try:
|
|
provider = TracepointProvider()
|
|
except:
|
|
provider = DebugfsProvider()
|
|
|
|
stats = Stats(provider, fields = options.fields)
|
|
|
|
if options.log:
|
|
log(stats)
|
|
elif not options.once:
|
|
import curses.wrapper
|
|
curses.wrapper(tui, stats)
|
|
else:
|
|
batch(stats)
|