c8c9dc42b7
It has been marked as deprecated since QEMU v4.2, replaced by the -overcommit option. Time to remove it now. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <20201210155808.233895-4-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
439 lines
16 KiB
Python
439 lines
16 KiB
Python
#
|
|
# Migration test main engine
|
|
#
|
|
# Copyright (c) 2016 Red Hat, Inc.
|
|
#
|
|
# This library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2.1 of the License, or (at your option) any later version.
|
|
#
|
|
# This library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
|
|
import os
|
|
import re
|
|
import sys
|
|
import time
|
|
|
|
from guestperf.progress import Progress, ProgressStats
|
|
from guestperf.report import Report
|
|
from guestperf.timings import TimingRecord, Timings
|
|
|
|
sys.path.append(os.path.join(os.path.dirname(__file__),
|
|
'..', '..', '..', 'python'))
|
|
from qemu.machine import QEMUMachine
|
|
|
|
|
|
class Engine(object):
|
|
|
|
def __init__(self, binary, dst_host, kernel, initrd, transport="tcp",
|
|
sleep=15, verbose=False, debug=False):
|
|
|
|
self._binary = binary # Path to QEMU binary
|
|
self._dst_host = dst_host # Hostname of target host
|
|
self._kernel = kernel # Path to kernel image
|
|
self._initrd = initrd # Path to stress initrd
|
|
self._transport = transport # 'unix' or 'tcp' or 'rdma'
|
|
self._sleep = sleep
|
|
self._verbose = verbose
|
|
self._debug = debug
|
|
|
|
if debug:
|
|
self._verbose = debug
|
|
|
|
def _vcpu_timing(self, pid, tid_list):
|
|
records = []
|
|
now = time.time()
|
|
|
|
jiffies_per_sec = os.sysconf(os.sysconf_names['SC_CLK_TCK'])
|
|
for tid in tid_list:
|
|
statfile = "/proc/%d/task/%d/stat" % (pid, tid)
|
|
with open(statfile, "r") as fh:
|
|
stat = fh.readline()
|
|
fields = stat.split(" ")
|
|
stime = int(fields[13])
|
|
utime = int(fields[14])
|
|
records.append(TimingRecord(tid, now, 1000 * (stime + utime) / jiffies_per_sec))
|
|
return records
|
|
|
|
def _cpu_timing(self, pid):
|
|
records = []
|
|
now = time.time()
|
|
|
|
jiffies_per_sec = os.sysconf(os.sysconf_names['SC_CLK_TCK'])
|
|
statfile = "/proc/%d/stat" % pid
|
|
with open(statfile, "r") as fh:
|
|
stat = fh.readline()
|
|
fields = stat.split(" ")
|
|
stime = int(fields[13])
|
|
utime = int(fields[14])
|
|
return TimingRecord(pid, now, 1000 * (stime + utime) / jiffies_per_sec)
|
|
|
|
def _migrate_progress(self, vm):
|
|
info = vm.command("query-migrate")
|
|
|
|
if "ram" not in info:
|
|
info["ram"] = {}
|
|
|
|
return Progress(
|
|
info.get("status", "active"),
|
|
ProgressStats(
|
|
info["ram"].get("transferred", 0),
|
|
info["ram"].get("remaining", 0),
|
|
info["ram"].get("total", 0),
|
|
info["ram"].get("duplicate", 0),
|
|
info["ram"].get("skipped", 0),
|
|
info["ram"].get("normal", 0),
|
|
info["ram"].get("normal-bytes", 0),
|
|
info["ram"].get("dirty-pages-rate", 0),
|
|
info["ram"].get("mbps", 0),
|
|
info["ram"].get("dirty-sync-count", 0)
|
|
),
|
|
time.time(),
|
|
info.get("total-time", 0),
|
|
info.get("downtime", 0),
|
|
info.get("expected-downtime", 0),
|
|
info.get("setup-time", 0),
|
|
info.get("x-cpu-throttle-percentage", 0),
|
|
)
|
|
|
|
def _migrate(self, hardware, scenario, src, dst, connect_uri):
|
|
src_qemu_time = []
|
|
src_vcpu_time = []
|
|
src_pid = src.get_pid()
|
|
|
|
vcpus = src.command("query-cpus")
|
|
src_threads = []
|
|
for vcpu in vcpus:
|
|
src_threads.append(vcpu["thread_id"])
|
|
|
|
# XXX how to get dst timings on remote host ?
|
|
|
|
if self._verbose:
|
|
print("Sleeping %d seconds for initial guest workload run" % self._sleep)
|
|
sleep_secs = self._sleep
|
|
while sleep_secs > 1:
|
|
src_qemu_time.append(self._cpu_timing(src_pid))
|
|
src_vcpu_time.extend(self._vcpu_timing(src_pid, src_threads))
|
|
time.sleep(1)
|
|
sleep_secs -= 1
|
|
|
|
if self._verbose:
|
|
print("Starting migration")
|
|
if scenario._auto_converge:
|
|
resp = src.command("migrate-set-capabilities",
|
|
capabilities = [
|
|
{ "capability": "auto-converge",
|
|
"state": True }
|
|
])
|
|
resp = src.command("migrate-set-parameters",
|
|
x_cpu_throttle_increment=scenario._auto_converge_step)
|
|
|
|
if scenario._post_copy:
|
|
resp = src.command("migrate-set-capabilities",
|
|
capabilities = [
|
|
{ "capability": "postcopy-ram",
|
|
"state": True }
|
|
])
|
|
resp = dst.command("migrate-set-capabilities",
|
|
capabilities = [
|
|
{ "capability": "postcopy-ram",
|
|
"state": True }
|
|
])
|
|
|
|
resp = src.command("migrate_set_speed",
|
|
value=scenario._bandwidth * 1024 * 1024)
|
|
|
|
resp = src.command("migrate_set_downtime",
|
|
value=scenario._downtime / 1024.0)
|
|
|
|
if scenario._compression_mt:
|
|
resp = src.command("migrate-set-capabilities",
|
|
capabilities = [
|
|
{ "capability": "compress",
|
|
"state": True }
|
|
])
|
|
resp = src.command("migrate-set-parameters",
|
|
compress_threads=scenario._compression_mt_threads)
|
|
resp = dst.command("migrate-set-capabilities",
|
|
capabilities = [
|
|
{ "capability": "compress",
|
|
"state": True }
|
|
])
|
|
resp = dst.command("migrate-set-parameters",
|
|
decompress_threads=scenario._compression_mt_threads)
|
|
|
|
if scenario._compression_xbzrle:
|
|
resp = src.command("migrate-set-capabilities",
|
|
capabilities = [
|
|
{ "capability": "xbzrle",
|
|
"state": True }
|
|
])
|
|
resp = dst.command("migrate-set-capabilities",
|
|
capabilities = [
|
|
{ "capability": "xbzrle",
|
|
"state": True }
|
|
])
|
|
resp = src.command("migrate-set-cache-size",
|
|
value=(hardware._mem * 1024 * 1024 * 1024 / 100 *
|
|
scenario._compression_xbzrle_cache))
|
|
|
|
resp = src.command("migrate", uri=connect_uri)
|
|
|
|
post_copy = False
|
|
paused = False
|
|
|
|
progress_history = []
|
|
|
|
start = time.time()
|
|
loop = 0
|
|
while True:
|
|
loop = loop + 1
|
|
time.sleep(0.05)
|
|
|
|
progress = self._migrate_progress(src)
|
|
if (loop % 20) == 0:
|
|
src_qemu_time.append(self._cpu_timing(src_pid))
|
|
src_vcpu_time.extend(self._vcpu_timing(src_pid, src_threads))
|
|
|
|
if (len(progress_history) == 0 or
|
|
(progress_history[-1]._ram._iterations <
|
|
progress._ram._iterations)):
|
|
progress_history.append(progress)
|
|
|
|
if progress._status in ("completed", "failed", "cancelled"):
|
|
if progress._status == "completed" and paused:
|
|
dst.command("cont")
|
|
if progress_history[-1] != progress:
|
|
progress_history.append(progress)
|
|
|
|
if progress._status == "completed":
|
|
if self._verbose:
|
|
print("Sleeping %d seconds for final guest workload run" % self._sleep)
|
|
sleep_secs = self._sleep
|
|
while sleep_secs > 1:
|
|
time.sleep(1)
|
|
src_qemu_time.append(self._cpu_timing(src_pid))
|
|
src_vcpu_time.extend(self._vcpu_timing(src_pid, src_threads))
|
|
sleep_secs -= 1
|
|
|
|
return [progress_history, src_qemu_time, src_vcpu_time]
|
|
|
|
if self._verbose and (loop % 20) == 0:
|
|
print("Iter %d: remain %5dMB of %5dMB (total %5dMB @ %5dMb/sec)" % (
|
|
progress._ram._iterations,
|
|
progress._ram._remaining_bytes / (1024 * 1024),
|
|
progress._ram._total_bytes / (1024 * 1024),
|
|
progress._ram._transferred_bytes / (1024 * 1024),
|
|
progress._ram._transfer_rate_mbs,
|
|
))
|
|
|
|
if progress._ram._iterations > scenario._max_iters:
|
|
if self._verbose:
|
|
print("No completion after %d iterations over RAM" % scenario._max_iters)
|
|
src.command("migrate_cancel")
|
|
continue
|
|
|
|
if time.time() > (start + scenario._max_time):
|
|
if self._verbose:
|
|
print("No completion after %d seconds" % scenario._max_time)
|
|
src.command("migrate_cancel")
|
|
continue
|
|
|
|
if (scenario._post_copy and
|
|
progress._ram._iterations >= scenario._post_copy_iters and
|
|
not post_copy):
|
|
if self._verbose:
|
|
print("Switching to post-copy after %d iterations" % scenario._post_copy_iters)
|
|
resp = src.command("migrate-start-postcopy")
|
|
post_copy = True
|
|
|
|
if (scenario._pause and
|
|
progress._ram._iterations >= scenario._pause_iters and
|
|
not paused):
|
|
if self._verbose:
|
|
print("Pausing VM after %d iterations" % scenario._pause_iters)
|
|
resp = src.command("stop")
|
|
paused = True
|
|
|
|
def _get_common_args(self, hardware, tunnelled=False):
|
|
args = [
|
|
"noapic",
|
|
"edd=off",
|
|
"printk.time=1",
|
|
"noreplace-smp",
|
|
"cgroup_disable=memory",
|
|
"pci=noearly",
|
|
"console=ttyS0",
|
|
]
|
|
if self._debug:
|
|
args.append("debug")
|
|
else:
|
|
args.append("quiet")
|
|
|
|
args.append("ramsize=%s" % hardware._mem)
|
|
|
|
cmdline = " ".join(args)
|
|
if tunnelled:
|
|
cmdline = "'" + cmdline + "'"
|
|
|
|
argv = [
|
|
"-accel", "kvm",
|
|
"-cpu", "host",
|
|
"-kernel", self._kernel,
|
|
"-initrd", self._initrd,
|
|
"-append", cmdline,
|
|
"-chardev", "stdio,id=cdev0",
|
|
"-device", "isa-serial,chardev=cdev0",
|
|
"-m", str((hardware._mem * 1024) + 512),
|
|
"-smp", str(hardware._cpus),
|
|
]
|
|
|
|
if self._debug:
|
|
argv.extend(["-device", "sga"])
|
|
|
|
if hardware._prealloc_pages:
|
|
argv_source += ["-mem-path", "/dev/shm",
|
|
"-mem-prealloc"]
|
|
if hardware._locked_pages:
|
|
argv_source += ["-overcommit", "mem-lock=on"]
|
|
if hardware._huge_pages:
|
|
pass
|
|
|
|
return argv
|
|
|
|
def _get_src_args(self, hardware):
|
|
return self._get_common_args(hardware)
|
|
|
|
def _get_dst_args(self, hardware, uri):
|
|
tunnelled = False
|
|
if self._dst_host != "localhost":
|
|
tunnelled = True
|
|
argv = self._get_common_args(hardware, tunnelled)
|
|
return argv + ["-incoming", uri]
|
|
|
|
@staticmethod
|
|
def _get_common_wrapper(cpu_bind, mem_bind):
|
|
wrapper = []
|
|
if len(cpu_bind) > 0 or len(mem_bind) > 0:
|
|
wrapper.append("numactl")
|
|
if cpu_bind:
|
|
wrapper.append("--physcpubind=%s" % ",".join(cpu_bind))
|
|
if mem_bind:
|
|
wrapper.append("--membind=%s" % ",".join(mem_bind))
|
|
|
|
return wrapper
|
|
|
|
def _get_src_wrapper(self, hardware):
|
|
return self._get_common_wrapper(hardware._src_cpu_bind, hardware._src_mem_bind)
|
|
|
|
def _get_dst_wrapper(self, hardware):
|
|
wrapper = self._get_common_wrapper(hardware._dst_cpu_bind, hardware._dst_mem_bind)
|
|
if self._dst_host != "localhost":
|
|
return ["ssh",
|
|
"-R", "9001:localhost:9001",
|
|
self._dst_host] + wrapper
|
|
else:
|
|
return wrapper
|
|
|
|
def _get_timings(self, vm):
|
|
log = vm.get_log()
|
|
if not log:
|
|
return []
|
|
if self._debug:
|
|
print(log)
|
|
|
|
regex = r"[^\s]+\s\((\d+)\):\sINFO:\s(\d+)ms\scopied\s\d+\sGB\sin\s(\d+)ms"
|
|
matcher = re.compile(regex)
|
|
records = []
|
|
for line in log.split("\n"):
|
|
match = matcher.match(line)
|
|
if match:
|
|
records.append(TimingRecord(int(match.group(1)),
|
|
int(match.group(2)) / 1000.0,
|
|
int(match.group(3))))
|
|
return records
|
|
|
|
def run(self, hardware, scenario, result_dir=os.getcwd()):
|
|
abs_result_dir = os.path.join(result_dir, scenario._name)
|
|
|
|
if self._transport == "tcp":
|
|
uri = "tcp:%s:9000" % self._dst_host
|
|
elif self._transport == "rdma":
|
|
uri = "rdma:%s:9000" % self._dst_host
|
|
elif self._transport == "unix":
|
|
if self._dst_host != "localhost":
|
|
raise Exception("Running use unix migration transport for non-local host")
|
|
uri = "unix:/var/tmp/qemu-migrate-%d.migrate" % os.getpid()
|
|
try:
|
|
os.remove(uri[5:])
|
|
os.remove(monaddr)
|
|
except:
|
|
pass
|
|
|
|
if self._dst_host != "localhost":
|
|
dstmonaddr = ("localhost", 9001)
|
|
else:
|
|
dstmonaddr = "/var/tmp/qemu-dst-%d-monitor.sock" % os.getpid()
|
|
srcmonaddr = "/var/tmp/qemu-src-%d-monitor.sock" % os.getpid()
|
|
|
|
src = QEMUMachine(self._binary,
|
|
args=self._get_src_args(hardware),
|
|
wrapper=self._get_src_wrapper(hardware),
|
|
name="qemu-src-%d" % os.getpid(),
|
|
monitor_address=srcmonaddr)
|
|
|
|
dst = QEMUMachine(self._binary,
|
|
args=self._get_dst_args(hardware, uri),
|
|
wrapper=self._get_dst_wrapper(hardware),
|
|
name="qemu-dst-%d" % os.getpid(),
|
|
monitor_address=dstmonaddr)
|
|
|
|
try:
|
|
src.launch()
|
|
dst.launch()
|
|
|
|
ret = self._migrate(hardware, scenario, src, dst, uri)
|
|
progress_history = ret[0]
|
|
qemu_timings = ret[1]
|
|
vcpu_timings = ret[2]
|
|
if uri[0:5] == "unix:":
|
|
os.remove(uri[5:])
|
|
if self._verbose:
|
|
print("Finished migration")
|
|
|
|
src.shutdown()
|
|
dst.shutdown()
|
|
|
|
return Report(hardware, scenario, progress_history,
|
|
Timings(self._get_timings(src) + self._get_timings(dst)),
|
|
Timings(qemu_timings),
|
|
Timings(vcpu_timings),
|
|
self._binary, self._dst_host, self._kernel,
|
|
self._initrd, self._transport, self._sleep)
|
|
except Exception as e:
|
|
if self._debug:
|
|
print("Failed: %s" % str(e))
|
|
try:
|
|
src.shutdown()
|
|
except:
|
|
pass
|
|
try:
|
|
dst.shutdown()
|
|
except:
|
|
pass
|
|
|
|
if self._debug:
|
|
print(src.get_log())
|
|
print(dst.get_log())
|
|
raise
|
|
|