There is a new class of machines in town! Amazon recently unveiled i3, a new class of machines targeted at I/O-intensive workloads. Scylla will officially support i3, and previews are already available. Join our webinar to learn how to build a state-of-the-art database solution. Presenters Glauber Costa and Eyal Gutkind will cover how to: - Determine which workloads can benefit from i3 instances - Ensure Scylla fully leverages the great resources in the i3 family - Effectively navigate the Scylla monitoring system and identify bottlenecks You'll also see a live demonstration with a dashboard featuring an i3 cluster with different data models and workloads.

1. Glauber Costa Eyal Gutkind
ScyllaDB webinar
How to Monitor and Size Workloads on
AWS i3 Instances

2. + Intro: Who we are, what we do, who uses it
+ Getting started with Scylla
+ Using monitoring data to understand bottlenecks
+ Data model and operation impacts
+ Scylla compatibility
+ Q&A
Today we will cover:

3. What we do: Scylla, towards the best NoSQL
+ > 1 million OPS per node
+ < 1ms 99% latency
+ Auto tuned
+ Scale up and out
+ Open source
+ Large community (piggyback on Cassandra)
+ Blends in the ecosystem: Spark, Presto, time series, search ...

4. Where Scylla is deployed?

5. Scylla benchmark by Samsung
op/s

6. + Intro: Who we are, what we do, who uses it
+ Using monitoring data to understand bottlenecks
+ Why AWS i3 Instances and Scylla?
+ Data model and operation impacts
+ Scylla compatibility
+ Q&A
Today we will cover:

7. Monitoring: Prometheus + Grafana
- Container based installation
- Simple and clean
- https://github.com/scylladb/scylla-grafana-monitoring
- Installs on a different machine
- Possible to install w/o docker
- Bring your own Prometheus and Grafana
- Use provided yml, ini and json files to enable monitoring

8. How to Understand Scylla Performance

9. What to look for? Customize for workload

10. Setting up the monitor

11. + Intro: Who we are, what we do, who uses it
+ Using monitoring data to understand bottlenecks
+ Why AWS i3 Instances and Scylla?
+ Data model and operation impacts
+ Scylla compatibility
+ Q&A
Today we will cover:

12. Powerful software for powerful instances

13. Threads Shards
System got muscle?, use it! : Shard per core

14. Powerful software for powerful instances

15. Don’t leave RAM behind: Unified cache
Cassandra Scylla
Key cache
Row cache
On-heap /
Off-heap
Linux page cache
SSTables
Unified cache
SSTables
Complex
Tuning

16. Unified cache vs Cassandra cache plethora
Cassandra Scylla
Key cache
Row cache
On-heap /
Off-heap
Linux page cache
SSTables
Unified cache
SSTables
SSTable page (4k)
Your data (300b)
Parasitic
Rows - 300b/4kb

17. Cassandra Scylla
Key cache
Row cache
On-heap /
Off-heap
Linux page cache
SSTables
Unified cache
SSTables
App
thread
Kernel
SSD
Page fault
Suspend
thread
Initiate I/O
Context switch
I/O
completes
Interrupt
Context
switch
Map page
Resume
thread
Page
fault
Unified cache vs Cassandra cache plethora

18. Show CPU and memory workload on the
monitor

19. Powerful software for powerful instances

20. Exploiting NVMe performance: Scylla I/O Scheduling
Query
Commitlog
Compaction
Queue
Queue
Queue
Userspace
I/O
Scheduler
Disk
Max useful disk concurrency
I/O queued in FS/deviceNo queues

21. Show I/O workload on the monitor

22. Powerful software for powerful instances

23. When to use i3 instances

24. + Intro: Who we are, what we do, who uses it
+ Getting started with Scylla
+ Using monitoring data to understand bottlenecks
+ Data model and operation impacts
+ Scylla compatibility
+ What’s Next?
+ Q&A
Today we will cover:

25. Prevent Hot Spots
CREATE TABLE sensordata (s1data text,s2data text,timestmp timestamp,sregion
text,stype text, PRIMARY KEY (s1data, s2data,timestmp));
CREATE TABLE sensordata (s1data text,s2data text,timestmp timestamp,sregion
text,stype text, PRIMARY KEY ((s1data, timestmp), s2data));

26. Partitions size

27. + Intro: Who we are, what we do, who uses it
+ Getting started with Scylla
+ Using monitoring data to understand bottlenecks
+ Data model and operation impacts
+ Scylla compatibility
+ Let’s show you how to do it (Demo time)
+ Q&A
Today we will cover:

28. + SSTable file format
+ Configuration file format
+ CQL language
+ CQL native protocol
+ JMX management protocol
+ Management command line
Compatibility

29. + Intro: Who we are, what we do, who uses it
+ Getting started with Scylla
+ Using monitoring data to understand bottlenecks
+ Data model and operation impacts
+ Scylla compatibility
+ Q&A
Today we will cover:

30. Q&A
Resources
slideshare.net/ScyllaDB
glauber@scylladb.com
eyal@scylladb.com
@scylladb
http://bit.ly/2oHAfok
youtube.com/c/scylladbscylladb.com/blog

31. NoSQL GOES NATIVE
Thank you.