On 3/12/2012 6:52 AM, Brandon Williams wrote:
On Mon, Mar 12, 2012 at 4:44 AM, aaron morton aa...@thelastpickle.com wrote:
I don't understand why I
don't get multiple concurrent compactions running, that's what would
make the biggest performance difference.
concurrent_compactors
Controls
After loosing one node we had to repair, CFs was on leveled compaction.
For one CF each node had about 7GB of data.
Running a repair without primary range switch ended up some nodes exhausted
to about 60-100GB of 5MB sstables for that CF (a lot of files).
After switching back from leveled to
On 3/13/2012 4:13 PM, Viktor Jevdokimov wrote:
What we did to speedup this process to return all exhausted nodes into
normal state faster:
We have created a 6 temporary virtual single Cassandra nodes with 2
CPU cores and 8GB RAM.
Stopped completely a compaction for CF on a production node.
On Tue, Mar 13, 2012 at 11:32 PM, Thorsten von Eicken
t...@rightscale.com wrote:
On 3/13/2012 4:13 PM, Viktor Jevdokimov wrote:
What we did to speedup this process to return all exhausted nodes into
normal state faster:
We have created a 6 temporary virtual single Cassandra nodes with 2
CPU
On 3/11/2012 9:17 PM, Peter Schuller wrote:
multithreaded_compaction: false
Set to true.
I did try that. I didn't see it go any faster. The cpu load was lower,
which I assumed meant fewer bytes/sec being compressed
(SnappyCompressor). I didn't see multiple compactions in parallel.
Nodetool
I don't understand why I
don't get multiple concurrent compactions running, that's what would
make the biggest performance difference.
concurrent_compactors
Controls how many concurrent compactions to run, by default it's the number of
cores on the machine.
If you are not CPU bound check
On Mon, Mar 12, 2012 at 4:44 AM, aaron morton aa...@thelastpickle.com wrote:
I don't understand why I
don't get multiple concurrent compactions running, that's what would
make the biggest performance difference.
concurrent_compactors
Controls how many concurrent compactions to run, by
multithreaded_compaction: false
Set to true.
--
/ Peter Schuller (@scode, http://worldmodscode.wordpress.com)
