Re: Memory Usage During Read

2011-05-07 Thread Serediuk, Adam
what's referencing all the memory. On Fri, May 6, 2011 at 12:25 PM, Serediuk, Adam adam.sered...@serialssolutions.com wrote: We're troubleshooting a memory usage problem during batch reads. We've spent the last few days profiling and trying different GC settings. The symptoms

Memory Usage During Read

2011-05-06 Thread Serediuk, Adam
We're troubleshooting a memory usage problem during batch reads. We've spent the last few days profiling and trying different GC settings. The symptoms are that after a certain amount of time during reads one or more nodes in the cluster will exhibit extreme memory pressure followed by a gc

Re: Node setup - recommended hardware

2011-05-04 Thread Serediuk, Adam
Having a well known node configuration that is trivial (one step) to create is your best maintenance bet. We are using 4 disk nodes in the following configuration: disk1: boot_raid1 os_raid1 cassandra_commit_log disk2: boot_raid1 os_raid1 cassandra_data_dir_raid0 disk3: cassandra_data_dir_raid0

Re: Range Slice Issue

2011-05-03 Thread Serediuk, Adam
I just ran a test and we do not see that behavior with dynamic snitch disabled. All nodes appear to be doing local reads as expected. On May 3, 2011, at 10:37 AM, Jonathan Ellis wrote: Do you still see this behavior if you disable dynamic snitch? On Tue, May 3, 2011 at 12:31 PM, Serediuk

Re: Range Slice Issue

2011-05-03 Thread Serediuk, Adam
heavily loaded than the others, and are correctly pushing queries to other replicas. On Tue, May 3, 2011 at 12:47 PM, Serediuk, Adam adam.sered...@serialssolutions.com wrote: I just ran a test and we do not see that behavior with dynamic snitch disabled. All nodes appear to be doing local