Category Archives: memory

24-core CPU and I can’t type an email (part two)

In my last post I promised to give more details about some rabbit holes that I went down during the investigation, including page tables, locks, WMI, and a vmmap bug. Those details are here, along with updated code samples. But … Continue reading

Posted in Investigative Reporting, memory, Performance | Tagged , , , | 26 Comments

24-core CPU and I can’t type an email (part one)

I wasn’t looking for trouble. I wasn’t trying to compile a huge project in the background (24-core CPU and I can’t move my mouse), I was just engaging in that most mundane of 21st century tasks, writing an email at … Continue reading

Posted in Investigative Reporting, memory, Performance | Tagged , , , | 53 Comments

ETW Heap Tracing–Every Allocation Recorded

Event Tracing for Windows (ETW, aka xperf) is usually used to monitor CPU usage, through its sampling profiler and its ability to record detailed information about context switches. Well, ETW is also used to monitor file I/O, and disk I/O, … Continue reading

Posted in memory, xperf | Tagged , , | 30 Comments

Forgetfulness in Computers

We count on computer hardware to be 100% reliable, and we tend to blame software for crashes. This is usually the correct thing to do, but not always. I just read a Wired article on errors in memory chips, and … Continue reading

Posted in memory, Programming | Tagged | 7 Comments