USB Bandwidth logging using usbmon
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# See: https://www.kernel.org/doc/Documentation/usb/usbmon.txt | |
# See: http://people.redhat.com/zaitcev/linux/OLS05_zaitcev.pdf | |
# | |
# Emanuele Ruffaldi @ SSSA 2016 | |
import sys,os | |
def scan(name,device=0): | |
hdevices = dict() | |
try: | |
udev = int(name) | |
name = "/sys/kernel/debug/usb/usbmon/%du" % udev | |
except: | |
pass | |
print "device time(s) MB packets" | |
for x in (name == "-" and sys.stdin or open(name,"r")): | |
q = x.split(" ",6) | |
if len(q) < 7: | |
continue | |
tag,timeus,event,address,status,size,rest = q | |
times = int(int(timeus)/1E6) | |
what,bus,dev,ep = address.split(":") | |
dev = int(dev) | |
if device != 0 and dev != device: | |
continue | |
if what == "Bi" and event == "S": | |
w = hdevices.get(dev) | |
if w is None: | |
last = times | |
count = 0 | |
packets = 0 | |
else: | |
last,count,packets = w | |
if last != times: | |
print dev,last,count/1E6,packets | |
count = 0 | |
packets = 0 | |
last = times | |
count += int(size) | |
packets += 1 | |
hdevices[dev] = (last,count,packets) | |
if __name__ == '__main__': | |
scan(sys.argv[1]) |
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