Re: About the heap

2013-03-18 Thread aaron morton
>> Cheers >> >> - >> Aaron Morton >> Freelance Cassandra Consultant >> New Zealand >> >> @aaronmorton >> http://www.thelastpickle.com >> >> On 13/03/2013, at 12:19 PM, Wei Zhu wrote: >> >>> Here i

Re: About the heap

2013-03-14 Thread Michael Theroux
rton > http://www.thelastpickle.com > > On 13/03/2013, at 12:19 PM, Wei Zhu wrote: > >> Here is the JIRA I submitted regarding the ancestor. >> >> https://issues.apache.org/jira/browse/CASSANDRA-5342 >> >> -Wei >> >> >> ---

Re: About the heap

2013-03-14 Thread Hiller, Dean
.org>" mailto:user@cassandra.apache.org>> Date: Thursday, March 14, 2013 6:41 AM To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" mailto:user@cassandra.apache.org>> Subject: Re: About the heap "Using half as many m1.xlarge is the way to go." OK, good

Re: About the heap

2013-03-14 Thread Alain RODRIGUEZ
is the JIRA I submitted regarding the ancestor. > > https://issues.apache.org/jira/browse/CASSANDRA-5342 > > -Wei > > > - Original Message - > From: "Wei Zhu" > To: user@cassandra.apache.org > Sent: Wednesday, March 13, 2013 11:35:29 AM > Subject: Re:

Re: About the heap

2013-03-14 Thread aaron morton
submitted regarding the ancestor. > > https://issues.apache.org/jira/browse/CASSANDRA-5342 > > -Wei > > > - Original Message - > From: "Wei Zhu" > To: user@cassandra.apache.org > Sent: Wednesday, March 13, 2013 11:35:29 AM > Subject: Re: About the h

Re: About the heap

2013-03-13 Thread Wei Zhu
Here is the JIRA I submitted regarding the ancestor. https://issues.apache.org/jira/browse/CASSANDRA-5342 -Wei - Original Message - From: "Wei Zhu" To: user@cassandra.apache.org Sent: Wednesday, March 13, 2013 11:35:29 AM Subject: Re: About the heap Hi Dean, The index_i

Re: About the heap

2013-03-13 Thread Wei Zhu
derations -Wei - Original Message - From: "Alain RODRIGUEZ" To: user@cassandra.apache.org Sent: Wednesday, March 13, 2013 11:28:28 AM Subject: Re: About the heap " called index_interval set to 128" I think this is for BloomFilters actually. 2013/3/13 Hiller, Dea

Re: About the heap

2013-03-13 Thread Alain RODRIGUEZ
"You can trigger minor compaction on an individual SStable file when the percentage of tombstones in that Sstable crosses a user-defined threshold." We have just one cf with TTL. I don't think the problem comes from there. "Peaks may be occurring during compaction, when Sstable files are memmappe

Re: About the heap

2013-03-13 Thread Wei Zhu
/SSTableMetadata.java#L58 Enjoy looking at Cassandra code:) -Wei - Original Message - From: "Dean Hiller" To: user@cassandra.apache.org Sent: Wednesday, March 13, 2013 11:11:14 AM Subject: Re: About the heap Going to 1.2.2 helped us quite a bit as well as turning on LCS from STCS whic

Re: About the heap

2013-03-13 Thread Alain RODRIGUEZ
"called index_interval set to 128" I think this is for BloomFilters actually. 2013/3/13 Hiller, Dean > Going to 1.2.2 helped us quite a bit as well as turning on LCS from STCS > which gave us smaller bloomfilters. > > As far as key cache. There is an entry in cassandra.yaml called > index_int

Re: About the heap

2013-03-13 Thread Hiller, Dean
Going to 1.2.2 helped us quite a bit as well as turning on LCS from STCS which gave us smaller bloomfilters. As far as key cache. There is an entry in cassandra.yaml called index_interval set to 128. I am not sure if that is related to key_cache. I think it is. By turning that to 512 or may

RE: About the heap

2013-03-13 Thread moshe.kranc
Peaks may be occurring during compaction, when Sstable files are memmapped. If so: Upgrading to C* 1.2 may bring some relief: You can trigger minor compaction on an individual SStable file when the percentage of tombstones in that Sstable crosses a user-defined threshold. (Aaron, can you confirm?