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Merge pull request #294 from imotai/master
add io dump tool
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| # -*- coding:utf-8 -*- | ||
| import os | ||
| import time | ||
| import datetime | ||
| import sys | ||
| # dump process_name io usage on device | ||
| class IoDump(object): | ||
| def __init__(self, process_name=[], top_size = 10): | ||
| self.process_data = {} | ||
| self.process_name = process_name | ||
|
|
||
| def readable(self, num): | ||
| for unit in ['','K','M','G','T','P','E','Z']: | ||
| if abs(num) < 1024.0: | ||
| return "%3.1f%s"%(num, unit) | ||
| num /= 1024.0 | ||
| return "%.1f%s" % (num, 'Y') | ||
|
|
||
| def collect(self): | ||
| entries = os.listdir("/proc") | ||
| statistics = {} | ||
| for entry in entries: | ||
| try: | ||
| pid = int(entry) | ||
| exe_path = os.path.realpath("/proc/%d/exe"%pid) | ||
| offset = exe_path.rfind("/") | ||
| bin = exe_path[offset+1:] | ||
| if bin in self.process_name: | ||
| status, read_bytes_ps, write_bytes_ps = self.calc_process(pid) | ||
| if not status: | ||
| continue | ||
| stat = statistics.get(bin,{"read_bytes_ps":0, "write_bytes_ps":0}) | ||
| stat["read_bytes_ps"] += read_bytes_ps | ||
| stat["write_bytes_ps"] += write_bytes_ps | ||
| statistics[bin] = stat | ||
| except Exception,e: | ||
| pass | ||
| stat_array = [] | ||
| for key in statistics: | ||
| item = {"name":key} | ||
| item.update(statistics[key]) | ||
| stat_array.append(item) | ||
| sorted_array = sorted(stat_array, key=lambda item : item["read_bytes_ps"], reverse = True) | ||
| output = [] | ||
| now = time.time() | ||
| output.append("-------------------------------------------------") | ||
| output.append(datetime.datetime.fromtimestamp(now).strftime('%Y-%m-%d %H:%M:%S')) | ||
| for item in sorted_array: | ||
| output.append("%s read:%s/s write:%s/s"%(item["name"], self.readable(item["read_bytes_ps"]), | ||
| self.readable(item["write_bytes_ps"]))) | ||
| print "\n".join(output) | ||
|
|
||
| def calc_process(self, pid): | ||
| data = {'read':0, | ||
| 'write':0, | ||
| 'cancell':0} | ||
| fd = open("/proc/%d/io"%pid, "r") | ||
| for line in fd.readlines(): | ||
| parts = line.replace("\n","").split(":") | ||
| if parts[0] == "read_bytes": | ||
| data["read"] = int(parts[1][1:]) | ||
| elif parts[0] == "write_bytes": | ||
| data["write"] = int(parts[1][1:]) | ||
| elif parts[0] == "cancelled_write_bytes": | ||
| data["cancell"] = int(parts[1][1:]) | ||
| fd.close() | ||
| if pid in self.process_data: | ||
| old_data = self.process_data[pid] | ||
| read_bytes_ps = data["read"] - old_data["read"] | ||
| write_bytes_ps = (data["write"] - data["cancell"]) - (old_data["write"] - old_data["cancell"]) | ||
| self.process_data[pid] = data | ||
| return True, read_bytes_ps, write_bytes_ps | ||
| else: | ||
| self.process_data[pid] = data | ||
| return False, 0, 0 | ||
|
|
||
| def main(): | ||
| dump = IoDump(sys.argv) | ||
| while True: | ||
| dump.collect() | ||
| time.sleep(1) | ||
|
|
||
| if __name__ == "__main__": | ||
| main() |
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