Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. As (C) looked like a kernel rebuild, I started with (D) and (E). ## 5. How long does it take to read the time? us on Ubuntu.

Speed 126

Speed Java AWS Virtualization 126

Smashing Magazine

DECEMBER 2, 2021

Stay tuned for lots of articles on metaprogramming, applications, useful Raku modules, programming techniques, guides on how to work with Raku inside containers, and even how to migrate from good ol’ Perl. C# Advent Calendar. It’s time for the fifth annual C# advent calendar that will feature two pieces of content every day.

Design 108

Design Development Programming Website 108

SQL Performance

OCTOBER 29, 2019

CustomerID , c. Customers c JOIN Sales. CustomerTransactions ct ON c. GROUP BY c. CustomerID , c. Running this query on SQL Server 2014 and earlier requires removing reference to this DMV. AccountOpenedDate , COUNT ( ct. CustomerTransactionID ) FROM Sales. CustomerID = ct. CustomerID.

C++ 74

C++ Database Servers Tuning 74

Brendan Gregg

SEPTEMBER 25, 2021

These strange questions came to the fore back in 2014 when Netflix was switching services from CentOS Linux to Ubuntu, and I helped debug several weird performance issues including one I'll describe here. As (C) looked like a kernel rebuild, I started with (D) and (E). ## 6. How long does it take to read the time? us on Ubuntu.

Speed 40

Speed Java AWS Virtualization 40

Brendan Gregg

SEPTEMBER 5, 2017

Hit Ctrl-C to end. ^C C operation = 'read' usecs : count distribution 0 -> 1 : 0 | | 2 -> 3 : 0 | | 4 -> 7 : 4479 | *| 8 -> 15 : 1028 | | 16 -> 31 : 14 | | 32 -> 63 : 1 | | [.]. If that seems wildly unacceptable, note that you can tune overcommit on Linux to not do this, and behave more like Solaris (see sysctl vm.overcommit_memory).

Virtualization 76

Virtualization AWS Engineering Hardware 76

Percona

JANUARY 14, 2019

downvotes','upvote','drupal','android','upvoted'] ? ? codecs','imgur','floppy','codec','adobe','android'] ? ? scala','currency','println'] ? ? voting','maven'] ? ? compose','xamarin','markdown','scrum','comic'] ? ? china','sourceforge','subscription','chinese','kotlin'] ? ? systemd','gitlab','autotldr'] ? ? boston','chemical','surveillance'] ? ?

Database 40

Database Analytics Blockchain Healthcare 40