> I am trying to see whether there will be any performance difference between > Cassandra 1.0.8 vs Cassandra 1.2.2 for reading the data mainly? 1.0 has key and row caches defined per CF, 1.1 has global ones which are better utilised and easier to manage. 1.2 moves bloom filters and compression meta off heap which reduces GC, which will help. Things normally get faster.
Cheers ----------------- Aaron Morton Freelance Cassandra Consultant New Zealand @aaronmorton http://www.thelastpickle.com On 20/06/2013, at 11:24 AM, Franc Carter <franc.car...@sirca.org.au> wrote: > On Thu, Jun 20, 2013 at 9:18 AM, Raihan Jamal <jamalrai...@gmail.com> wrote: > I am trying to see whether there will be any performance difference between > Cassandra 1.0.8 vs Cassandra 1.2.2 for reading the data mainly? > > Has anyone seen any major performance difference? > > We are part way through a performance comparison between 1.0.9 with Size > Tiered Compaction and 1.2.4 with Leveled Compaction - for our use case it > looks like a significant performance improvement on the read side. We are > finding compaction lags when we do very large bulk loads, but for us this is > an initialisation task and that's a reasonable trade-off > > cheers > > -- > Franc Carter | Systems architect | Sirca Ltd > franc.car...@sirca.org.au | www.sirca.org.au > Tel: +61 2 8355 2514 > Level 4, 55 Harrington St, The Rocks NSW 2000 > PO Box H58, Australia Square, Sydney NSW 1215 >
