To change the readahead amount iirc is something like
blockdev --setra 16 /dev/sda
where the number is the readahead buffer size in KB I think.
-Jay
On Sun, Jan 25, 2015 at 3:50 PM, Roger Hoover
wrote:
> I haven't had a chance to try it yet. Hopefully next week. I'll let you
> know what I
I haven't had a chance to try it yet. Hopefully next week. I'll let you
know what I find.
On Sun, Jan 25, 2015 at 2:40 PM, Chris Riccomini
wrote:
> Awesome, I'll have a look at this. @Roger, did setting this improve your
> RocksDB throughput?
>
> On Sun, Jan 25, 2015 at 12:53 PM, Jay Kreps wr
Hey all,
Thanks for checking! Milinda, I've opened:
https://issues.apache.org/jira/browse/INFRA-9066
To fix the Github issue.
Cheers,
Chris
On Sun, Jan 25, 2015 at 7:58 AM, Milinda Pathirage
wrote:
> Hi Chris,
>
> https://github.com/apache/samza still says 'mirrored from
> git://git.apache.o
Awesome, I'll have a look at this. @Roger, did setting this improve your
RocksDB throughput?
On Sun, Jan 25, 2015 at 12:53 PM, Jay Kreps wrote:
> I have seen a similar thing from the OS tunable readahead. I think Linux
> defaults to reading a full 128K into pagecache with every read. This is
> s
I have seen a similar thing from the OS tunable readahead. I think Linux
defaults to reading a full 128K into pagecache with every read. This is
sensible for spinning disks where maybe blowing 500us may mean you get
lucky and save a 10ms seek. But for SSDs, especially a key-value store
doing purely
FYI, for Linux with SSDs, changing the io scheduler to deadline or noop can
make a 500x improvement. I haven't tried this myself.
http://www.elasticsearch.org/guide/en/elasticsearch/guide/current/hardware.html#_disks
On Tue, Jan 20, 2015 at 9:28 AM, Chris Riccomini <
criccom...@linkedin.com.inva
Awesome!
Thanks to your works!
2015-01-23 4:55 GMT+08:00 Chris Riccomini :
> Hey all,
>
> The Apache board has unanimously passed the resolution to establish Apache
> Samza as a top level project. We've graduated!
>
> Jakob has opened this umbrella ticket to handle the graduation work that
> need
Hi Chris,
https://github.com/apache/samza still says 'mirrored from
git://git.apache.org/incubator-samza.git'.
Thanks
Milinda
On Sun, Jan 25, 2015 at 2:35 AM, Yan Fang wrote:
> Yes, verified. It's working. Thanks!
>
> Cheers,
>
> Fang, Yan
> yanfang...@gmail.com
> +1 (206) 849-4108
>
> On Sat,
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https://reviews.apache.org/r/30255/
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Review request for samza.
Bugs: SAMZA-475
https://issues.apache.org/jira/br
