Brendan Gregg

MAY 16, 2017

I previously wrote about Netflix in [2015] and [2016], and if you are interested in what it's like to work here, I already covered much in those posts. Instead, it has been a process of continual improvements, by many engineers across the company. ## A Day in the Life (Performance Engineering) What do I actually do all day?

Java 75

Java Entertainment Engineering Scalability 75

SQL Performance

DECEMBER 9, 2020

I mainly experimented with different table value constructor cardinalities, with serial versus parallel processing, and with row mode versus batch mode processing. The plan is serial, and all operators in the plan use row mode processing by default. Batch processing. Figure 5: Plan with batch processing.

C++ 114

C++ Servers Testing Processing 114

Percona

APRIL 12, 2023

2016: The company adds service-loaded MongoDB Professional to its mix. and partners) and in the process, stifling the upstarts, the truly open source little folks dreaming big. Here are other key developments in company history: 2013: 10gen changes its name to MongoDB, Inc. looking out for MongoDB Inc.

Open Source 81

Open Source Programming Database Servers 81

Brendan Gregg

OCTOBER 7, 2018

Some one-liners: # New processes with arguments bpftrace -e 'tracepoint:syscalls:sys_enter_execve { join(args->argv); }'. Files opened by process bpftrace -e 'tracepoint:syscalls:sys_enter_open { printf("%s %sn", comm, str(args->filename)); }'. Pages paged in by process bpftrace -e 'software:major-faults:1 { @[comm] = count(); }'.

C++ 40

C++ Virtualization Programming Latency 40

Alex Podelko

OCTOBER 13, 2016

I am looking forward to share my thoughts on ‘Reinventing Performance Testing’ at the imPACt performance and capacity conference by CMG held on November 7-10, 2016 in La Jolla, CA. The difference between user stories and constraints approaches is not in performance requirements per se, but how to address them during the development process.

Performance Testing 100

Performance Testing Testing Performance Engineering 100

Brendan Gregg

SEPTEMBER 5, 2017

LTS (April 2016). 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). I wrote about it in a previous post, [DTrace for Linux 2016]. Both of those should be easy fixes. It's the official profiler.

Virtualization 76

Virtualization AWS Engineering Hardware 76

O'Reilly Software

APRIL 4, 2018

We live in the era of the connected experience, where our daily interactions with the world can be digitized, collected, processed, and analyzed to generate valuable insights. Accumulating all this data to process overnight is not an option anymore. Do we need to process each record individually? Process tolerance.

Architecture 80

Architecture Scalability Google Operating System 80

SQL Performance

DECEMBER 9, 2020

I mainly experimented with different table value constructor cardinalities, with serial versus parallel processing, and with row mode versus batch mode processing. The plan is serial, and all operators in the plan use row mode processing by default. Batch processing. Figure 5: Plan with batch processing.

C++ 61

C++ Servers Testing Processing 61

Rigor

SEPTEMBER 11, 2019

Reading time 16 min Whether you’re a web performance expert, an evangelist for the culture of performance, a web engineer incorporating performance into your process, or someone new to the web performance entirely, you probably identify as curious, excited about new ideas, and always learning. ” Paul Calvano. Paul Calvano.

Performance 89

Performance Education Google Website 89

SQL Server According to Bob

JUNE 9, 2016

SQL Server 2016, automatic soft NUMA avoids assignment of logical processors from the same package to the same soft NUMA node. This is a process of calling the CPUID instruction to obtain feature information reported by the CPU. Using the returned information SQL Server assigns nodes and schedulers accordingly. For example.

Servers 40

Servers Virtualization Tuning Architecture 40

Percona

JANUARY 14, 2019

Processed 4.15 Processed 4.15 Processed 8.19 Processed 8.19 Processed 4.15 Processed 3.05 Processed 8.19 toDate(max(created_utc))??????count()?? count()?? ? 2006-01-01 ? 2018-05-31 ? 4148248585 ? ???????????????????????????????????????????????????????????????????? 1 rows in set. Elapsed: 11.554 sec.

Database 40

Database Analytics Blockchain Healthcare 40

SQL Performance

SEPTEMBER 2, 2021

SQL Server 2016 brought us STRING_SPLIT , a native function that eliminates the need for many of the custom solutions we’ve needed before. STRING_SPLIT() in SQL Server 2016 : Follow-Up #1. STRING_SPLIT() in SQL Server 2016 : Follow-Up #2. He spent a lot of time fine-tuning this CLR function to efficiently parse a string.

C++ 59

C++ Servers Testing Database 59

Tim Kadlec

JANUARY 31, 2019

Never-Slow Mode isn’t that far removed from two ideas that we had back in 2016 when Yoav Weiss and I met with the AMP team to discuss some standards-based alternatives to AMP. The trick is going to be to find a default limit that provides a benefit to the user without breaking the web in the process. Is focusing on size ideal?

Tuning 76

Tuning Cache Development Performance 76

Rigor

SEPTEMBER 3, 2019

STEP 7: Tune Your CDN Performance. This process is often quicker than making the origin request and further reduces the load on your infrastructure. For example, your team could set up waiting rooms to lessen the load, as Macy’s did when it had a failure on Black Friday 2016.

Website 74

Website Cache Ecommerce Traffic 74

Alex Russell

MARCH 31, 2022

Like every other successful platform, the web operates on a finely tuned understanding of risk and trust , and deprecations are particularly explosive. [2] Late in the drafting of this post, it was pointed out to me by Frederik Braun that Brad Hill had considered the downsides of a site-populated SRI addressable cache back in 2016.

Cache 82

Cache Government Traffic Network 82