Mastering InnoDB Diagnostics

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Presentation from MySQL Conference 2010

Mastering InnoDB Diagnostics Harrison Fisk Senior Principal Technical Support Engineer

Overview ,[object Object],[object Object]

Easy to get overwhelmed ,[object Object]

Two methods for troubleshooting ,[object Object]

Information Sources

Sources ,[object Object],[object Object]

InnoDB monitors

SHOW GLOBAL STATUS

INFORMATION_SCHEMA tables ,[object Object]

SHOW MUTEX STATUS ,[object Object],[object Object]

Gdb ( Poor mans profiler (PMP))

OS specific tools

SHOW INNODB STATUS ,[object Object]

Table monitors ,[object Object]

Exact format varies ,[object Object]

InnoDB plugin

XtraDB

Data Dictionary

Problems ,[object Object],[object Object]

Can't drop and/or create tables or databases

Example errors:

Diagnostics ,[object Object],[object Object]

Output to error log

CREATE TABLE innodb_table_monitor (id int) ENGINE=innodb;

Interpreting ,[object Object],[object Object]

DB_TRX_ID

DB_ROLL_PTR ,[object Object]

Solutions ,[object Object],[object Object]

Copy .frm to the name of the table ,[object Object],[object Object]

Remove them

Crashing

Problem ,[object Object],[object Object]

InnoDB loves this one ,[object Object],[object Object]

Diagnostics ,[object Object],[object Object],[object Object],[object Object]

OS often restricts setuid cores ,[object Object]

coreadm ,[object Object],[object Object]

Interpreting Error log ,[object Object],[object Object]

Signal 6 ,[object Object],[object Object]

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Created by Mozilla Research in 2012 and now part of Linux Foundation Europe, the Servo project is an experimental rendering engine written in Rust. It combines memory safety and concurrency to create an independent, modular, and embeddable rendering engine that adheres to web standards. Stewardship of Servo moved from Mozilla Research to the Linux Foundation in 2020, where its mission remains unchanged. After some slow years, in 2023 there has been renewed activity on the project, with a roadmap now focused on improving the engine’s CSS 2 conformance, exploring Android support, and making Servo a practical embeddable rendering engine. In this presentation, Rakhi Sharma reviews the status of the project, our recent developments in 2023, our collaboration with Tauri to make Servo an easy-to-use embeddable rendering engine, and our plans for the future to make Servo an alternative web rendering engine for the embedded devices industry. (c) Embedded Open Source Summit 2024 April 16-18, 2024 Seattle, Washington (US) https://events.linuxfoundation.org/embedded-open-source-summit/ https://ossna2024.sched.com/event/1aBNF/a-year-of-servo-reboot-where-are-we-now-rakhi-sharma-igalia

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Following the popularity of "Cloud Revolution: Exploring the New Wave of Serverless Spatial Data," we're thrilled to announce this much-anticipated encore webinar. In this sequel, we'll dive deeper into the Cloud-Native realm by uncovering practical applications and FME support for these new formats, including COGs, COPC, FlatGeoBuf, GeoParquet, STAC, and ZARR. Building on the foundation laid by industry leaders Michelle Roby of Radiant Earth and Chris Holmes of Planet in the first webinar, this second part offers an in-depth look at the real-world application and behind-the-scenes dynamics of these cutting-edge formats. We will spotlight specific use-cases and workflows, showcasing their efficiency and relevance in practical scenarios. Discover the vast possibilities each format holds, highlighted through detailed discussions and demonstrations. Our expert speakers will dissect the key aspects and provide critical takeaways for effective use, ensuring attendees leave with a thorough understanding of how to apply these formats in their own projects. Elevate your understanding of how FME supports these cutting-edge technologies, enhancing your ability to manage, share, and analyze spatial data. Whether you're building on knowledge from our initial session or are new to the serverless spatial data landscape, this webinar is your gateway to mastering cloud-native formats in your workflows.

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Mastering InnoDB Diagnostics

1. Mastering InnoDB Diagnostics Harrison Fisk Senior Principal Technical Support Engineer

2.

3.

4.

5. Information Sources

6.

7. InnoDB monitors

8. SHOW GLOBAL STATUS

9.

10.

11. Gdb ( Poor mans profiler (PMP))

12. OS specific tools

13.

14.

15.

16. InnoDB plugin

18. Data Dictionary

19.

20. Can't drop and/or create tables or databases

21. Example errors:

22.

23. Output to error log

24. CREATE TABLE innodb_table_monitor (id int) ENGINE=innodb;

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30. Remove them

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41. Memory image produced

42. Requires exactly the same binary and libraries

43. With rpm ensure debuginfo is installed

44. Non-stripped binaries

45.

46.

47. Windows: Minidump/DrWatson/Windbg

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61.

62. Performance

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67.

68. 2 Write every commit

69. 0 Write only every second

70.

71.

72.

73.

74. Change innodb_flush_log_at_trx_commit

75.

76. Faster writes

77.

78.

79.

81.

82. Increase innodb_buffer_pool_size

83. New LRU algorithm in InnoDB plugin

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100. Questions?

101. The presentation is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s products remains at the sole discretion of Oracle.

102.