Brendan Gregg

OCTOBER 8, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. Syscall count by program bpftrace -e 'tracepoint:raw_syscalls:sys_enter { @[comm] = count(); }'. I wrote seeksize.d

C++ 110

C++ Virtualization Programming Latency 110

Brendan Gregg

OCTOBER 7, 2018

Screenshot: tracing read latency for PID 181: # bpftrace -e 'kprobe:vfs_read /pid == 30153/ { @start[tid] = nsecs; } kretprobe:vfs_read /@start[tid]/ { @ns = hist(nsecs - @start[tid]); delete(@start[tid]); }'. Syscall count by program bpftrace -e 'tracepoint:raw_syscalls:sys_enter { @[comm] = count(); }'. I wrote seeksize.d

C++ 40

C++ Virtualization Programming Latency 40

Smashing Magazine

AUGUST 20, 2021

You could create and update blog posts, all content was straight HTML — open-source WYSIWYG editors weren’t available at the time, and Markdown didn’t come about until 2004. Nanoc removed the UI and is instead a program you run on the command line. We can see all the bones of modern Jamstack CMSs here. Drupal is not just a CMS.

Ecommerce 139

Ecommerce Website Government Internet 139

SQL Server According to Bob

JANUARY 11, 2020

Microsoft SQL Server I/O Basics Author: ​​ Bob Dorr, Microsoft SQL Server Escalation Published: ​​ December, 2004 SUMMARY: ​​ Learn the I/O requirements for Microsoft SQL Server database file operations. © ​​ 2004 Microsoft Corporation. ​​ All rights reserved.

Servers 40

Servers Cache Media Hardware 40

SQL Server According to Bob

JANUARY 11, 2020

KB ​​ boundaries efficiently. ​​ Although ​​ SQL Server ​​ tries ​​ to use the log space as efficiently as possible, ​​ certain application patterns cause the log-block fill percentages to remain small. ​​ This creates 8?KB

Servers 40

Servers Cache Database Media 40