Hi Jonathan - Would you recommend to disable system swap as a rule? I'm running on Debian 64bit and am seeing light swapping:
total used free shared buffers cached Mem: 8003 7969 33 0 0 4254 -/+ buffers/cache: 3714 4288 Swap: 513 15 498 On Apr 5, 2011, at 8:35 PM, Jonathan Ellis wrote: > Step 1: disable swap. > > 2011/4/5 Héctor Izquierdo Seliva <izquie...@strands.com>: >> Update with more info: >> >> I'm still running into problems. Now I don't write more than 100 columns >> at a time, and I'm having lots of Stop-the-world gc pauses. >> >> I'm writing into three column families, with memtable_operations = 0.3 >> and memtable_throughput = 64. There is now swapping, and full GCs are taking >> around 5 seconds. I'm running cassandra with a heap of 8 GB. Should I tune >> this somehow? >> >> Is any of this wrong? >>> >>>>> -----Original Message----- >>>>> From: Héctor Izquierdo Seliva [mailto:izquie...@strands.com] >>>>> Sent: April-05-11 8:30 >>>>> To: user@cassandra.apache.org >>>>> Subject: batch_mutate failed: out of sequence response >>>>> >>>>> Hi everyone. I'm having trouble while inserting big amounts of data into >>>>> cassandra. I'm getting this exception: >>>>> >>>>> batch_mutate failed: out of sequence response >>>>> >>>>> I'm gessing is due to very big mutates. I have made the batch mutates >>>>> smaller and it seems to be behaving. Can somebody shed some light? >>>>> >>>>> Thanks! >>>>> >>>>> No virus found in this incoming message. >>>>> Checked by AVG - www.avg.com >>>>> Version: 9.0.894 / Virus Database: 271.1.1/3551 - Release Date: 04/05/11 >>>>> 02:34:00 >>>>> >>>> >>>> >>> >>> >> >> >> > > > > -- > Jonathan Ellis > Project Chair, Apache Cassandra > co-founder of DataStax, the source for professional Cassandra support > http://www.datastax.com