Yep I believe those are inserts per second. Take the last line: "811653,1666,250"
I believe that's telling you that during that 10 second interval you did 1666 inserts but your overall insert rate is 811653/250 = 3246.612 inserts/sec. Timeouts may be due to your machine(s) being fully saturated? Not sure. Scott On Fri, Mar 26, 2010 at 1:00 PM, malcolm smith < [email protected]> wrote: > Ok I ran the stress test with out of box settings -- 50 threads and 1M row > inserts. It seems to get as high as 4400 ops per second and as low as 968. > Am I reading these correctly as inserts per second? > > These are results below. But is also generates timeouts and failures in > the python code like: > > Process Inserter-20: > Traceback (most recent call last): > File "/usr/lib/python2.6/multiprocessing/process.py", line 232, in > _bootstrap > self.run() > File > "/home/malsmith/dev/apache-cassandra-0.5.1-src/test/system/stress.py", line > 80, in run > self.cclient.batch_insert('Keyspace1', key, cfmap, > ConsistencyLevel.ONE) > File > "/home/malsmith/dev/apache-cassandra-0.5.1-src/interface/gen-py/cassandra/Cassandra.py", > line 583, in batch_insert > self.recv_batch_insert() > File > "/home/malsmith/dev/apache-cassandra-0.5.1-src/interface/gen-py/cassandra/Cassandra.py", > line 611, in recv_batch_insert > raise result.te > TimedOutException: TimedOutException() > self.recv_batch_insert() > File > "/home/malsmith/dev/apache-cassandra-0.5.1-src/interface/gen-py/cassandra/Cassandra.py", > line 611, in recv_batch_insert > raise result.te > TimedOutException: TimedOutException() > self.recv_batch_insert() > File > "/home/malsmith/dev/apache-cassandra-0.5.1-src/interface/gen-py/cassandra/Cassandra.py", > line 611, in recv_batch_insert > raise result.te > TimedOutException: TimedOutException() > > > total,interval_op_rate,elapsed_time > 48318,4831,10 > 58006,968,20 > 75447,1744,30 > 118266,4281,40 > 160906,4264,50 > 191501,3059,60 > 235144,4364,70 > 270721,3557,80 > 308977,3825,90 > 353383,4440,100 > 386573,3319,110 > 411550,2497,120 > 445391,3384,130 > 476990,3159,140 > 491169,1417,150 > 512848,2167,160 > 547812,3496,170 > 583997,3618,180 > 609193,2519,190 > 653878,4468,200 > 687692,3381,210 > 711378,2368,220 > 755527,4414,230 > 794985,3945,240 > 811653,1666,250 > ~ > > > ~ > On Fri, Mar 26, 2010 at 12:25 PM, Brandon Williams <[email protected]>wrote: > >> On Fri, Mar 26, 2010 at 10:45 AM, malcolm smith < >> [email protected]> wrote: >> >>> I've been getting a feel for the performance elements of Cassandra using >>> version 0.51. I've done similar tests on HBase before, but Cassandra has >>> some very appealing aspects that I would like to pursue. >>> >>> However I'm not seeing the what seems like the common level of >>> performance others are seeing. >>> >> >> Can you test with stress.py? In 0.5, I think it was in test/stress. >> >> -Brandon >> > >
