On 04/05/2011 03:04 PM, Chris Burroughs wrote:
I have gc logs if anyone is interested.
This is from a node with standard io, jna enabled, but limits were not
set for mlockall to succeed. One can see -/+ buffers/cache free
shrinking and the C* pid's RSS growing.
Includes several days of:
gc
On 04/05/2011 04:38 PM, Peter Schuller wrote:
- Different collectors: -XX:+UseParallelGC -XX:+UseParallelOldGC
Unless you also removed the -XX:+UseConcMarkSweepGC I *think* it takes
precedence, so that the above options would have no effect. I didn't
test. In either case, did you definitely
This is a minor followup to this thread which includes required context:
http://www.mail-archive.com/user@cassandra.apache.org/msg09279.html
I haven't solved the problem, but since negative results can also be
useful I thought I would share them. Things I tried unsuccessfully (on
individual
- Different collectors: -XX:+UseParallelGC -XX:+UseParallelOldGC
Unless you also removed the -XX:+UseConcMarkSweepGC I *think* it takes
precedence, so that the above options would have no effect. I didn't
test. In either case, did you definitely confirm CMS was no longer
being used? (Should be
On Thu, Feb 3, 2011 at 1:49 AM, Ryan King r...@twitter.com wrote:
On Wed, Feb 2, 2011 at 6:22 AM, Chris Burroughs
chris.burrou...@gmail.com wrote:
On 01/28/2011 09:19 PM, Chris Burroughs wrote:
Thanks Oleg and Zhu. I swear that wasn't a new hotspot version when I
checked, but that's
On Thu, Mar 17, 2011 at 10:27 AM, Zhu Han schumi@gmail.com wrote:
On Thu, Feb 3, 2011 at 1:49 AM, Ryan King r...@twitter.com wrote:
On Wed, Feb 2, 2011 at 6:22 AM, Chris Burroughs
chris.burrou...@gmail.com wrote:
On 01/28/2011 09:19 PM, Chris Burroughs wrote:
Thanks Oleg and Zhu. I
On 01/28/2011 09:19 PM, Chris Burroughs wrote:
Thanks Oleg and Zhu. I swear that wasn't a new hotspot version when I
checked, but that's obviously not the case. I'll update one node to the
latest as soon as I can and report back.
RSS over 48 hours with java 6 update 23:
On Wed, Feb 2, 2011 at 6:22 AM, Chris Burroughs
chris.burrou...@gmail.com wrote:
On 01/28/2011 09:19 PM, Chris Burroughs wrote:
Thanks Oleg and Zhu. I swear that wasn't a new hotspot version when I
checked, but that's obviously not the case. I'll update one node to the
latest as soon as I
On 02/02/2011 12:49 PM, Ryan King wrote:
We're seeing a similar problem with one of our clusters (but over a
longer time scale). Its possible that its not a leak, but just
fragmentation. Unless you've told it otherwise, the jvm uses glibc's
malloc implementation for off-heap allocations. We're
On Wed, Feb 2, 2011 at 10:29 AM, Chris Burroughs
chris.burrou...@gmail.com wrote:
On 02/02/2011 12:49 PM, Ryan King wrote:
We're seeing a similar problem with one of our clusters (but over a
longer time scale). Its possible that its not a leak, but just
fragmentation. Unless you've told it
On Thu, Jan 27, 2011 at 12:23 PM, Chris Burroughs chris.burrou...@gmail.com
wrote:
java -version
java version 1.6.0_20
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)
cmd line arg (paths edited):
On 01/28/2011 10:51 AM, sridhar basam wrote:
On Thu, Jan 27, 2011 at 12:23 PM, Chris Burroughs chris.burrou...@gmail.com
wrote:
java -version
java version 1.6.0_20
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) 64-Bit Server VM (build 16.3-b01, mixed mode)
cmd line
Are you using a row cache? if so what is it set too? in general it should
not be a percentage.
On Thu, Jan 27, 2011 at 12:23 PM, Chris Burroughs chris.burrou...@gmail.com
wrote:
We have a 6 node Cassandra 0.6.8 cluster running on boxes with 4 GB of
RAM. Over the course of several weeks
On 01/28/2011 11:29 AM, Jake Luciani wrote:
Are you using a row cache? if so what is it set too? in general it should
not be a percentage.
ColumnFamily CompareWith=UTF8Type Name=mycolumnfamily
KeysCached=0 KeyCacheSavePeriodInSeconds=0
RowsCached=40
What about your permgen usage? Do you track that? Use something like jstat
-gc -t pid 5s 100 to track it. Or turn up verbose GC on your command
line options to what is happening.
Sridhar
On Fri, Jan 28, 2011 at 11:38 AM, Chris Burroughs chris.burrou...@gmail.com
wrote:
On 01/28/2011
On 01/28/2011 12:42 PM, sridhar basam wrote:
What about your permgen usage? Do you track that? Use something like jstat
-gc -t pid 5s 100 to track it. Or turn up verbose GC on your command
line options to what is happening.
http://img59.imageshack.us/img59/1056/permgen.png
This is over
On 01/28/2011 04:12 AM, Zhu Han wrote:
Chris,
Somebody else and I have the same problem as you, and reported it here:
http://www.apacheserver.net/Very-high-memory-utilization-not-caused-by-mmap-on-sstables-at1082970.htm
[NB: It is not solved although the titles said so. Some response from
We have a 6 node Cassandra 0.6.8 cluster running on boxes with 4 GB of
RAM. Over the course of several weeks cached memory slowly decreases
until Cassandra is restarted or something bad happens (ie oom killer).
Performance obviously suffers as cached memory is no longer available.
Here is a graph
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