def parse_iostat(self):
"""
Parse output of get_iostat().
Returned structure is a dictionary of dictionaries:
{device:
{'rs': value,
'ws': value,
'krs': value,
'kws': value,
'wait': value,
'actv': value,
'svc_t': value,
'w': value,
'b': value}
}
rs (r/s) - reads per second
ws (w/s) - writes per second
krs (kr/s) - kilobytes read per second
kws (kw/s) - kilobytes write per second
wait - average number of transactions waiting for service (queue length)
actv - average number of transactions actively being serviced (removed
from the queue but not yet completed)
svc_t - average response time of transactions, in milliseconds
w - percent of time there are transactions waiting for service (queue not-empty)
b - percent of time the disk is busy (transactions in progress)
"""
fields = ("rs", "ws", "krs", "kws", "wait", "actv", "svc_t", "w", "b")
return utils.parser_iostat(self.get_iostat(), fields)
def parse_iostat(self):
"""
Parse output of get_iostat().
Returned structure is a dictionary of dictionaries:
{device:
{'tps': value,
'kbrs': value,
'kbws': value,
'kbr': value,
'kbw': value,
'avgrq-sz': value,
'avgqu-sz': value,
'await': value,
'svctm': value}
}
tps - transfers per second
kbrs (kB_read/s) - amount of data read from the device expressed in kilobytes per second
kbws (kB_wrtn/s) - amount of data written to the device expressed in kilobytes per second
kbr (kB_read) - total number of kilobytes read
kbw (kB_read) - total number of kilobytes written
avgrq-sz - The average size (in sectors) of the requests that were issued to the device.
avgqu-sz - The average queue length of the requests that were issued to the device.
await - The average time (in milliseconds) for I/O requests issued to the device to be served. This includes the time spent by the requests in queue and the time spent servicing them.
svctm - The average service time (in milliseconds) for I/O requests that were issued to the device.
"""
fields = ("tps", "kbrs", "kbws", "kbr", "kbw", "avgrq-sz", "avgqu-sz", "await", "svctm")
return utils.parser_iostat(self.get_iostat(), fields)
def parse_iostat(self):
"""
Parse output of get_iostat().
Returned structure is a dictionary of dictionaries.
{device:
{'rs': value,
'ws': value,
'krs': value,
'kws': value,
'wait': value,
'svc_t': value,
'b': value}
}
rs (r/s) - read operations per second
ws (w/s) - write operations per second
krs (kr/s) - kilobytes read per second
kws (kw/s) - kilobytes write per second
wait - transactions queue length
svc_t - average duration of transactions, in milliseconds
b (%b) - % of time the device had one or more outstanding transactions
"""
fields = ("rs", "ws", "krs", "kws", "wait", "svc_t", "b")
return utils.parser_iostat(self.get_iostat(), fields)
