Brendan Gregg

NOVEMBER 29, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. It's an exciting development in cloud computing: hardware virtualization is now fast. It's using software and coordination between the hypervisor and guest to improve performance.

Virtualization 111

Virtualization AWS Hardware Storage 111

Brendan Gregg

NOVEMBER 28, 2017

Hardware virtualization for cloud computing has come a long way, improving performance using technologies such as VT-x, SR-IOV, VT-d, NVMe, and APICv. It's an exciting development in cloud computing: hardware virtualization is now fast. It's using software and coordination between the hypervisor and guest to improve performance.

Virtualization 40

Virtualization AWS Hardware Storage 40

Brendan Gregg

MARCH 16, 2024

To explain this example in more detail: The profiler periodically interrupts software execution, and for those disconnected stacks it happens to be the execution of the kernel software ("vfs*", "ext*", etc.). These partial stacks get grouped together on the left. Click here for a longer explanation.

Java 145

Java Cache Google Hardware 145

SQL Server According to Bob

JANUARY 11, 2020

As ​​ the ​​ administrator of a SQL Server 2005 installation, ​​ you will find that ​​ visibility into ​​ the ​​ SQL Server ​​ I/O ​​ subsystem ​​ has been ​​ significantly increased.

Servers 40

Servers Cache Database Media 40

The Agile Manager

FEBRUARY 28, 2021

When I first joined ThoughtWorks in 2005, one of our core messages was to solve an “outer quadrant” problem first - something in the problem space that is difficult and complex. We had virtual leaving drinks for a long-time colleague particularly adept at doing this kind of mentoring, as he is joining another firm. I will miss him.

Virtualization 52

Virtualization Systems Technology Technology 52

SQL Server According to Bob

DECEMBER 18, 2018

CSA ISO/IEC 9945-1:2005 (R2009) 3.375 Synchronized I/O Data Integrity Completion. Refer to the ISO documentation on file integrity for complete details: CSA ISO/IEC 9945-1:2005 (R2009) 3.376 Synchronized I/O File Integrity Completion. product: Virtual Disk. Msft Virtual Disk 1.0 Virtual Environments (VMs and Containers).

Servers 90

Servers Media Cache Storage 90

Brendan Gregg

AUGUST 8, 2017

The oldest change in the entire Linux repo dates back to 2005, when Linus imported Linux 2.6.12-rc2, I generated this using my offcputime tool from [bcc] (this tool needs eBPF features from Linux 4.8+), and my [flame graph] software: #./bcc/tools/offcputime.py This, too, was a dead end. rc2, and this change predates that.

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