From fa52cfe181b268b111f3e9082a1d5484bce3ba0f Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Thu, 5 Sep 2002 21:03:30 +0000
Subject: [PATCH] Print additional "by-interval" statistics. By default, the
number of loads and hits and the hit rate is now reported every 15 minutes.
---
src/ZEO/stats.py | 69 ++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 64 insertions(+), 5 deletions(-)
diff --git a/src/ZEO/stats.py b/src/ZEO/stats.py
index 26581bf3..19381282 100755
--- a/src/ZEO/stats.py
+++ b/src/ZEO/stats.py
@@ -14,9 +14,11 @@
##############################################################################
"""Trace file statistics analyzer.
-Usage: stats.py [-v] [-S] tracefile
+Usage: stats.py [-i interval] [-q] [-v] [-S] tracefile
+-i: summarizing interval in minutes (default 15; max 60)
+-q: quiet; don't print sommaries
-v: verbose; print each record
--S: don't print statistics (implies -v)
+-S: don't print statistics (turns off -q)
"""
"""File format:
@@ -58,18 +60,29 @@ def usage(msg):
def main():
# Parse options
verbose = 0
+ quiet = 0
dostats = 1
+ interval = 900 # Every 15 minutes
try:
- opts, args = getopt.getopt(sys.argv[1:], "vS")
+ opts, args = getopt.getopt(sys.argv[1:], "i:qvS")
except getopt.error, msg:
usage(msg)
return 2
for o, a in opts:
+ if o == "-i":
+ interval = int(60 * float(a))
+ if interval <= 0:
+ interval = 60
+ elif interval > 3600:
+ interval = 3600
+ if o == "-q":
+ quiet = 1
+ verbose = 0
if o == "-v":
verbose = 1
if o == "-S":
dostats = 0
- verbose = 1
+ quiet = 0
if len(args) != 1:
usage("exactly one file argument required")
return 2
@@ -91,6 +104,9 @@ def main():
datarecords = 0
datasize = 0L
file0 = file1 = 0
+ byinterval = {}
+ thisinterval = None
+ h0 = he = None
while 1:
r = f.read(24)
if len(r) < 24:
@@ -99,7 +115,16 @@ def main():
ts, code, oid, serial = struct.unpack(">ii8s8s", r)
if t0 is None:
t0 = ts
+ thisinterval = t0 / interval
+ h0 = he = ts
te = ts
+ if ts / interval != thisinterval:
+ if not quiet:
+ dumpbyinterval(byinterval, h0, he)
+ byinterval = {}
+ thisinterval = ts / interval
+ h0 = ts
+ he = ts
dlen, code = code & 0x7fffff00, code & 0xff
if dlen:
datarecords += 1
@@ -115,7 +140,8 @@ def main():
file0 += 1
code = code & 0x7e
bycode[code] = bycode.get(code, 0) + 1
- if verbose or code in (0x00, 0x70):
+ byinterval[code] = byinterval.get(code, 0) + 1
+ if verbose:
print "%s %d %02x %016x %016x %1s %s" % (
time.ctime(ts)[4:-5],
current,
@@ -124,9 +150,23 @@ def main():
U64(serial),
version,
dlen and str(dlen) or "")
+ if code in (0x00, 0x70):
+ if not quiet:
+ dumpbyinterval(byinterval, h0, he)
+ byinterval = {}
+ thisinterval = ts / interval
+ h0 = he = ts
+ if not quiet:
+ print time.ctime(ts)[4:-5],
+ if code == 0x00:
+ print '='*20, "Restart", '='*20
+ else:
+ print '-'*20, "Flip->%d" % current, '-'*20
bytes = f.tell()
f.close()
rte = time.time()
+ if not quiet:
+ dumpbyinterval(byinterval, h0, he)
# Error if nothing was read
if not records:
@@ -159,6 +199,25 @@ def main():
code,
explain.get(code) or "*** unknown code ***")
+def dumpbyinterval(byinterval, h0, he):
+ loads = 0
+ hits = 0
+ for code in byinterval.keys():
+ if code & 0x70 == 0x20:
+ n = byinterval[code]
+ loads += n
+ if code in (0x2A, 0x2C, 0x2E):
+ hits += n
+ if not loads:
+ return
+ if loads:
+ hr = 100.0 * hits / loads
+ else:
+ hr = 0.0
+ print "%s-%s %10s loads, %10s hits,%5.1f%% hit rate" % (
+ time.ctime(h0)[4:-8], time.ctime(he)[14:-8],
+ addcommas(loads), addcommas(hits), hr)
+
def hitrate(bycode):
loads = 0
hits = 0
--
2.30.9