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

SQL Performance

MAY 1, 2020

I was a bit perplexed by this issue, since the system was certainly no slouch — plenty of cores, 3TB of memory, and XtremIO storage. Still, if you stack a bunch of high-transaction databases on there, checkpoint processing can get pretty sluggish. If you have instances running older versions like SQL Server 2008 R2 (I found one!),

C++ 58

C++ Database Servers Storage 58

SQL Performance

MARCH 17, 2020

It comes set to SQL Server 2008 compatibility (level 100), but we will start with a more modern setting of SQL Server 2017 (level 140): ALTER DATABASE StackOverflow2013 SET COMPATIBILITY_LEVEL = 140 ; The tests were performed on my laptop using SQL Server 2019 CU 2. The Sort only has 19 rows to process, so it consumes only 1ms or so.

Servers 86

Servers Tuning Database Efficiency 86

SQL Performance

JANUARY 22, 2020

Table-valued parameters have been around since SQL Server 2008 and provide a useful mechanism for sending multiple rows of data to SQL Server, brought together as a single parameterized call. It affects the number of TDS buffers that are sent across the network to SQL Server, and it also impacts the overall processing time for the commands.

Servers 55

Servers Azure Hardware Network 55

All Things Distributed

DECEMBER 18, 2012

Aug 24 - The Five-Minute Rule Ten Years Later, and Other Computer Storage Rules of Thumb , Jim Gray and Goetz Graefe, ACM SIGMOD Record 26 (4): 63â??68, Goetz Graefe, ACM Queue 6(4): 40-52 (2008). Aug 24 - The Five-Minute Rule 20 Years Later: and How Flash Memory Changes the Rules. Nijssen ed., North Holland Pub.,

Operating System 144

Operating System Cache AWS Scalability 144

O'Reilly

JULY 25, 2023

And if I switch tabs to view a paper from 2008, then a song from 2008 could start up. To provide some coherence to the music, I decided to use Taylor Swift songs since her discography covers the time span of most papers that I typically read: Her main albums were released in 2006, 2008, 2010, 2012, 2014, 2017, 2019, 2020, and 2022.

Programming 98

Programming Code Design Benchmarking 98

All Things Distributed

APRIL 5, 2012

Jack: Since our launch in late 2008, weve grown to over 6 million teachers and students globally primarily through word of mouth of teachers who have shared Edmodo with each other. Of course, with as much textual data as we have we are leveraging Lucene/SOLR (a NoSQL solution) for Search and Semantic processing. hands freeÃ?

Innovation 146

Innovation AWS Education Network 146

Percona

JANUARY 14, 2019

Processed 4.15 Processed 4.15 Processed 8.19 Processed 8.19 Processed 4.15 In a partitioned massively parallel database system, the storage format and sorting algorithm may not be optimized for that operation as we are reading multiple partitions in parallel. Processed 3.05 Processed 8.19

Database 40

Database Analytics Blockchain Healthcare 40

Alex Russell

AUGUST 30, 2021

From 2008 to 2013, the Chrome project was based on WebKit, and a growing team of Chrome engineers began to contribute heavily "upstream." This process can be messy and slow, but it never creates a political blockage for developing new capabilities for the web. width="1522" height="886" decoding="async" loading="lazy" />.

Engineering 98

Engineering Open Source Website Operating System 98

Brendan Gregg

SEPTEMBER 5, 2017

There's also a ZFS send/recv code path that should try to use the TASK_INTERRUPTIBLE flag (as suggested by a coworker), to avoid a kernel hang (can't kill -9 the process). On Linux, containers are a combination of namespaces (restricting what a process sees) and cgroups (similar to Solaris resource controls). amazon").

Virtualization 76

Virtualization AWS Engineering Hardware 76

SQL Server According to Bob

JANUARY 11, 2020

Using SQL Server’s SNITrace to Troubleshoot Networking Issues In the process of tracking down a few TCP 10054 issues (highlighted here: ​​ [link] ) I ​​ also ​​ used ​​ the ​​ SNITrace ​​ (SNI Trace) ​​ capabilities. 9501 x.x.x.100

Network 40

Network Servers Processing Software Engineering 40