On Fri, Oct 09, 2009 at 01:52:16AM -0400, Guy wrote:
I'd like the status bar to also indicate the current transfer rates,
something along the lines of:
0.22 | 763M | 137.2 KB/s Up - 344.8 KB/s Down | 10/09 0147
There are a few solutions. Your best bet is probably to poll the
TX/RX statistics and take a sliding window average. But just how
you do it will vary from system to system.
Let's assume python and modern-ish Linux for now.
#!/usr/bin/env python
import io, operator, sys, time
dir = "/sys/class/net/%s/statistics" % sys.argv[1]
txfile = io.open("%s/tx_bytes" % dir, "r")
rxfile = io.open("%s/rx_bytes" % dir, "r")
def read(file):
file.seek(0)
return int(file.read())
WIN = 10
tx_val = [0 for i in range(0, WIN)]
rx_val = [0 for i in range(0, WIN)]
times = [time.time() for i in range(0, WIN)]
i = 0
while True:
i += 1
times[i % WIN] = time.time()
tx_val[i % WIN] = read(txfile)
rx_val[i % WIN] = read(rxfile)
diff = lambda ary: ary[i % WIN] - ary[(i - 1) % WIN]
avg = lambda ary: diff(ary) / diff(times)
print '%d %d' % (avg(tx_val), avg(rx_val))
time.sleep(1)
That will give you the average TX/RX in bytes for the past ten
seconds. Or you could drop the sliding average and do it in
shell and expr. Whatever works.
I prefer avoiding anything like 'conky' if possible.
Come on, all the script kiddies are using conky these days.
You're just not 1337 enough.
--
Kris Maglione
Long hair minimizes the need for barbers; socks can be done without;
one leather jacket solves the coat problem for many years; suspenders
are superfluous.
--Albert Einstein
