Full_Name: Muthukumar Version: LMDB 0.82 OS: OSX URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (49.207.184.177) # Writer ``` import lmdb db_path = "test.db" DB_MAX_SIZE = 40 * 1000 * 1000 * 1000 env = lmdb.Environment(db_path, DB_MAX_SIZE, sync=True) txn = env.begin(write=True, buffers=True) for i in xrange(5000000): value = "*" * 100 txn.put("i="+str(i), value) txn.commit() ``` I ran the above python program in my machine which took almost 8 secs to complete. Simultaneously i try to copy the database using mdb_copy, but it started copying only after the write program completes its execution. Please note: First i run the writer program then the mdb_copy, if i start mdb_copy first it runs smoothly. Please help.
muthukumardce@gmail.com wrote: > Full_Name: Muthukumar > Version: LMDB 0.82 > OS: OSX > URL: ftp://ftp.openldap.org/incoming/ > Submission from: (NULL) (49.207.184.177) > > > # Writer > > ``` > import lmdb > > db_path = "test.db" > DB_MAX_SIZE = 40 * 1000 * 1000 * 1000 > env = lmdb.Environment(db_path, DB_MAX_SIZE, sync=True) > txn = env.begin(write=True, buffers=True) > for i in xrange(5000000): > value = "*" * 100 > txn.put("i="+str(i), value) > txn.commit() > ``` > > I ran the above python program in my machine which took almost 8 secs to > complete. Simultaneously i try to copy the database using mdb_copy, but it > started copying only after the write program completes its execution. > > Please note: First i run the writer program then the mdb_copy, if i start > mdb_copy first it runs smoothly. > > Please help. The ITS is for bug reports, not help requests. Use the openldap-technical mailing list for assistance. The mdb_copy program needs to acquire the DB write mutex before executing, to ensure it gets a consistent snapshot. It obviously can't do that until any other active writer finishes. Closing this ITS. -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/
changed state Open to Closed