Yes, seeing latency improvement after backporting 9472 to 3.0.13. We are measuring p99 latency, thus moving objects off heap improved gc stalls, which directly affects our read/write p99 latency.
On Thu, Jul 27, 2017 at 10:54 PM, Jeff Jirsa <jji...@gmail.com> wrote: > This is after you backported 9472 to 3.0? > > -- > Jeff Jirsa > > > > On Jul 27, 2017, at 10:33 PM, Andrew Whang <andrewgwh...@gmail.com> > wrote: > > > > Jay, > > > > We see ~20% write latency improvement on 3.0.13 in a write-heavy > workload, > > using offheap_objects. offheap_buffers only offered minimal improvement. > > > > On Thu, Jul 27, 2017 at 10:06 PM, Jay Zhuang > <jay.zhu...@yahoo.com.invalid> > > wrote: > > > >> Hi Andrew, > >> > >> Do you see performance gain from reintroducing off-heap memtables for > >> 3.0.x? When we were on 2.2.x we saw big improvements from enabling > >> off-heap memtables. > >> > >> Thanks, > >> Jay > >> > >>> On 7/27/17 9:37 PM, Andrew Whang wrote: > >>> I'm wondering if anyone has been able to patch CASSANDRA-9472 to 3.0, > >>> without breaking unit tests. The patch was introduced in 3.4, but 3.0.x > >>> contains unit tests and code from later 3.x releases, which makes > >> debugging > >>> unit test failures difficult - i.e. SSTableCorruptionDetectionTest, > >> which > >>> was introduced in 3.7 and is found in 3.0.14, but not in 3.4. > >>> > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org > >> For additional commands, e-mail: dev-h...@cassandra.apache.org > >> > >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: dev-unsubscr...@cassandra.apache.org > For additional commands, e-mail: dev-h...@cassandra.apache.org > >
