"Quick and dirty" Python script for counting the lines per second pulled from stdin.

lps.py

#!/usr/bin/python
"""Print stats about stdin per-line timings."""

import signal
import sys
import time

start = time.time()
count = 0
try:
    for line in sys.stdin:
        count += 1
except KeyboardInterrupt:
    print
    pass
end = time.time()
et = end - start
lps = count / et
print "Elapsed time = %f, lines = %d,  lps = %f" % (et, count, lps)

good !

what about this version:

#!/usr/bin/python
"""Print stats about stdin per-line timings."""
import sys
import time

max_secs_print = sys.argv[1] if len(sys.argv) > 1 else 5
max_lines_print = sys.argv[2] if len(sys.argv) > 2 else 1000

def lps(start, count):
    return count / float(time.time() - start)

start = time.time()
count = 0
try:
    for _line in sys.stdin:
        count += 1
        if not count % max_lines_print or (time.time() - start) > max_secs_print:
            print "lines = %d,  lps = %.2f" % (count, lps(start, count))
            count = 0
            start = time.time()
except KeyboardInterrupt:
    print "lines = %d,  lps = %.2f" % (count, lps(start, count))