[Zodb-checkins] CVS: ZODB3/Tools - update.py:1.1.2.1

[Jeremy Hylton]

Update of /cvs-repository/ZODB3/Tools
In directory cvs.zope.org:/tmp/cvs-serv23225

Added Files:
      Tag: ZODB3-fast-restart-branch
	update.py 
Log Message:
Update a bunch of objects.




=== Added File ZODB3/Tools/update.py ===
#! /usr/bin/env python2.1

import random

import ZODB
from ZEO.ClientStorage import ClientStorage

SERVER = "guido", 9000
MB = 1024**2
CACHE_SIZE = 200 * MB
CLIENT = "cache"
RECONNECT_TIMEOUT = 10

NEARLY_FULL = CACHE_SIZE * 0.45

def main():
    cs = ClientStorage(SERVER, cache_size=CACHE_SIZE, client=CLIENT,
                       max_disconnect_poll=RECONNECT_TIMEOUT)
    db = ZODB.DB(cs)
    cn = db.open()
    rt = cn.root()
    objs = rt["objects"]

    cache = cs._cache
    num_objs = len(objs)

    j = 0
    while cache._pos < NEARLY_FULL:
        print "cache size", cache._pos
        i = random.randint(0, num_objs)
        obj = objs[i]
        size = 2 ** random.randint(1, 20)
        obj.value = "u" * size
        j += 1
        if j % 20 == 0:
            get_transaction().commit()

if __name__ == "__main__":
    main()