def __init__(self, device_name: str, raw_stats: list = None):
metrics_number = 13
if raw_stats is None:
raw_stats = [0] * metrics_number
if len(raw_stats) < metrics_number:
raw_stats.extend([0] * metrics_number)
self.device_name = device_name
# rrqm/s
self.read_requests_merged_per_sec = float(raw_stats[0])
# wrqm/s
self.write_requests_merged_per_sec = float(raw_stats[1])
# r/s
self.read_requests_per_sec = float(raw_stats[2])
# w/s
self.write_requests_per_sec = float(raw_stats[3])
# rkB/s
self.reads_per_sec = Size(float(raw_stats[4]), UnitPerSecond(Unit.KiloByte))
# wkB/s
self.writes_per_sec = Size(float(raw_stats[5]), UnitPerSecond(Unit.KiloByte))
# avgrq-sz
self.average_request_size = float(raw_stats[6]) # `in sectors`
# avgqu-sz
self.average_queue_length = float(raw_stats[7])
# await
self.average_service_time = Time(milliseconds=float(raw_stats[8]))
# r_await
self.read_average_service_time = Time(milliseconds=float(raw_stats[9]))
# w_await
self.write_average_service_time = Time(milliseconds=float(raw_stats[10]))
# iostat's documentation says to not trust 11th field
# util
self.utilization = float(raw_stats[12])
def __init__(self, device_name: str, raw_stats: list = None):
metrics_number = 5
if raw_stats is None:
raw_stats = [0] * metrics_number
if len(raw_stats) < metrics_number:
raw_stats.extend([0] * metrics_number)
self.device_name = device_name
# tps
self.transfers_per_second = float(raw_stats[0])
# kB_read/s
self.reads_per_second = Size(float(raw_stats[1]), UnitPerSecond(Unit.KiloByte))
# kB_wrtn/s
self.writes_per_second = Size(float(raw_stats[2]), UnitPerSecond(Unit.KiloByte))
# kB_read
self.total_reads = Size(float(raw_stats[3]), Unit.KibiByte)
# kB_wrtn
self.total_writes = Size(float(raw_stats[4]), Unit.KibiByte)
def __init__(self, trace):
try:
self.iops = float(trace["throughput"]["value"])
self.workset = Size(float(trace["workset"]["value"]),
Unit.Blocks512)
bandwidth_unit = parse_unit(
trace["bandwidth"]["unit"].split("/")[0])
bandwidth_value = float(trace["bandwidth"]["value"])
self.bandwidth = Size(bandwidth_value,
UnitPerSecond(bandwidth_unit))
except KeyError:
self.iops = 0
self.workset = Size(0)
self.bandwidth = Size(0)
if "write invalidation factor" in trace:
self.wif = float(trace["write invalidation factor"]["value"])
else:
self.wif = None
def read_bandwidth_deviation(self):
return Size(self.job.read.bw_dev, UnitPerSecond(Unit.KibiByte))
def read_bandwidth_average(self):
return Size(self.job.read.bw_mean, UnitPerSecond(Unit.KibiByte))
def read_bandwidth(self):
return Size(self.job.read.bw, UnitPerSecond(Unit.KibiByte))
def trim_bandwidth_deviation(self):
return Size(self.job.trim.bw_dev, UnitPerSecond(Unit.KibiByte))
def trim_bandwidth_average(self):
return Size(self.job.trim.bw_mean, UnitPerSecond(Unit.KibiByte))
def trim_bandwidth(self):
return Size(self.job.trim.bw, UnitPerSecond(Unit.KibiByte))
def write_bandwidth_deviation(self):
return Size(self.job.write.bw_dev, UnitPerSecond(Unit.KibiByte))
def write_bandwidth_average(self):
return Size(self.job.write.bw_mean, UnitPerSecond(Unit.KibiByte))
def write_bandwidth(self):
return Size(self.job.write.bw, UnitPerSecond(Unit.KibiByte))
