Randon ASCII

FEBRUARY 11, 2018

Zombies probably won’t consume 32 GB of your memory like they did to me, but zombie processes do exist, and I can help you find them and make sure that developers fix them. He’d even written a tool that would dump a list of zombie processes – their names and counts. I ran his tool and it showed 506,000 zombie processes!

Processing 72

Processing Programming Code Cache 72

Brendan Gregg

FEBRUARY 28, 2023

Titus, the Netflix container management platform, is now open source,” [link] Apr 2018 - [Cutress 19] Dr. DDR6: Here's What to Expect in RAM Modules,” [link] Nov 2020 - [Salter 20] Jim Salter, “Western Digital releases new 18TB, 20TB EAMR drives,” [link] Jul 2020 - [Spier 20] Martin Spier, Brendan Gregg, et al.,

Performance 110

Performance Latency Cache Virtualization 110

Brendan Gregg

FEBRUARY 28, 2023

References I've reproduced the references from my SREcon22 keynote below, so you can click on links: [Gregg 08] Brendan Gregg, “ZFS L2ARC,” [link] , Jul 2008 [Gregg 10] Brendan Gregg, “Visualizations for Performance Analysis (and More),” [link] , 2010 [Greenberg 11] Marc Greenberg, “DDR4: Double the speed, double the latency?

Performance 52

Performance Latency Cache Virtualization 52

All Things Distributed

DECEMBER 18, 2012

Jul 4 - Leases: An efficient fault-tolerant mechanism for distributed file cache consistency , Gray, Cary, and David Cheriton, Vol. Goetz Graefe, ACM Queue 6(4): 40-52 (2008). Sep 7 - Adaptive load sharing in homogeneous distributed systems , D Eager, ED Lazowska and J Zahorjan - IEEE transactions on software engineering, 1986.

Operating System 144

Operating System Cache AWS Scalability 144

SQL Server According to Bob

JUNE 3, 2016

The new column store engine and query processing technology could increase query performance up to 100X and the new In-memory OLTP engine can process 1.25million batches/sec on a single 4 socket server, which is more than 3X of SQL 2014. “ – Rohan Kumar, Director of SQL Software Engineering. Auto-soft NUMA. Follow-up.

Hardware 40

Hardware Software Engineering Transportation Scalability 40

Percona

JUNE 4, 2023

Introduction: MariaDB vs. MySQL The goal of this blog post is to evaluate, at a higher level, MariaDB vs. MySQL vs. Percona Server for MySQL side-by-side to better inform the decision making process. Efficient data processing and indexing, making it optimal for executing queries and handling large datasets.

Open Source 52

Open Source Servers Storage Scalability 52

The Morning Paper

NOVEMBER 5, 2019

The storage backend is the software module directly managing the storage device attached to physical machines. In 2008, with the emergence of Btrfs, a new implementation was built taking advantage of Btrfs’ transactions, deduplication, checksums, and compression. RADOS has been through a number of iterations in the preceding decade+.

Storage 64

Storage Systems Hardware Efficiency 64