of Cassandra?
On Dec 16, 2014 6:36 PM, Arne Claassen a...@emotient.com wrote:
That's just the thing. There is nothing in the logs except the constant
ParNew collections like
DEBUG [ScheduledTasks:1] 2014-12-16 19:03:35,042 GCInspector.java (line 118)
GC for ParNew: 166 ms for 10
I have a three node cluster that has been sitting at a load of 4 (for each
node), 100% CPI utilization (although 92% nice) for that last 12 hours,
ever since some significant writes finished. I'm trying to determine what
tuning I should be doing to get it out of this state. The debug log is just
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On Tue, Dec 16, 2014 at 2:04 PM, Arne Claassen
rsvi...@datastax.com wrote:
What's CPU, RAM, Storage layer, and data density per node? Exact heap
settings would be nice. In the logs look for TombstoneOverflowingException
On Tue, Dec 16, 2014 at 1:36 PM, Arne Claassen a...@emotient.com wrote:
I'm running 2.0.10.
The data is all time series
Sorry, I meant 15GB heap on the one machine that has less nice CPU% now.
The others are 6GB
On Tue, Dec 16, 2014 at 12:50 PM, Arne Claassen a...@emotient.com wrote:
AWS r3.xlarge, 30GB, but only using a Heap of 10GB, new 2GB because we
might go c3.2xlarge instead if CPU is more important than
replayAllFailedBatches
Is that just routine scheduled house-keeping or a sign of something else?
On Tue, Dec 16, 2014 at 12:52 PM, Arne Claassen a...@emotient.com wrote:
Sorry, I meant 15GB heap on the one machine that has less nice CPU% now.
The others are 6GB
On Tue, Dec 16, 2014 at 12:50 PM, Arne Claassen
I have a time series table consisting of frame information for media. The
table is partitioned on the media ID and uses time and some other frame
level keys as cluster keys, i.e. all frames for a one piece of media is
really one column family row, even though it is represented in CQL as a
ordered
the
tunings as indicated in
https://issues.apache.org/jira/browse/CASSANDRA-8150
On Tue, Dec 16, 2014 at 3:06 PM, Arne Claassen a...@emotient.com wrote:
Changed the 15GB node to 25GB heap and the nice CPU is down to ~20% now.
Checked my dev cluster to see if the ParNew log entries are just par
in, especially if you're going full bore on
loads. However, you maybe just flat out be CPU bound on your write
throughput, how many TPS and what size writes do you have? Also what is
your widest row?
Final question what is compaction throughput at?
On Tue, Dec 16, 2014 at 3:20 PM, Arne Claassen
keyspace tablename
On Tue, Dec 16, 2014 at 3:42 PM, Arne Claassen a...@emotient.com wrote:
Actually not sure why the machine was originally configured at 6GB since
we even started it on an r3.large with 15GB.
Re: Batches
Not using batches. I actually have that as a separate question
:18 PM, Ryan Svihla rsvi...@datastax.com wrote:
Ok based on those numbers I have a theory..
can you show me nodetool tptats for all 3 nodes?
On Tue, Dec 16, 2014 at 4:04 PM, Arne Claassen a...@emotient.com wrote:
No problem with the follow up questions. I'm on a crash course here
trying
many? what is your flush queue set to?
On Tue, Dec 16, 2014 at 4:43 PM, Arne Claassen a...@emotient.com wrote:
Of course QA decided to start a test batch (still relatively low traffic), so
I hope it doesn't throw the tpstats off too much
Node 1:
Pool NameActive
runs with nodes with similar
configuration.
On Tue, Dec 16, 2014 at 5:08 PM, Arne Claassen a...@emotient.com wrote:
Not using any secondary indicies and memtable_flush_queue_size is the default
4.
But let me tell you how data is mutated right now, maybe that will give you
an insight on how
it would solve for you.
Compaction running could explain a high load, logs messages with ERRORS,
WARN, GCInspector are all meaningful there, I suggest search jira for your
version to see if there are any interesting bugs.
On Tue, Dec 16, 2014 at 6:14 PM, Arne Claassen a...@emotient.com wrote
Cassandra 2.0.10 and Datastax Java Driver 2.1.1
On Dec 16, 2014, at 4:48 PM, Ryan Svihla rsvi...@datastax.com wrote:
What version of Cassandra?
On Dec 16, 2014 6:36 PM, Arne Claassen a...@emotient.com wrote:
That's just the thing. There is nothing in the logs except the constant
ParNew
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