I'm a long-time user of cachegrind for program profiling, and recently went back to check the official documentation once more: https://valgrind.org/docs/manual/cg-manual.html In it, there are mult...

I'm currently learning about various profiling and performance utilities under Linux, notably valgrind/cachegrind. I have following toy program: #include <iostream> #include <vector> ...

When I tried to use wincachegrind and get the cachegrind file, it returns Cannot find call target. cachegrind.out line number:68 Anybody knows how to solve this? UPDATE, here is the scree...

I'm currently trying to understand some very very strange behavior in one of my C programs. Apparently, adding or removing a seemingly inconsequential line at the end of it drastically affects the ...

Inspired by SQLite, I'm looking at using valgrind's "cachegrind" tool to do reproducible performance benchmarking. The numbers it outputs are much more stable than any other method of timing I've f...

I intend to multiply 2 matrices using the cache-friendly method ( that would lead to less number of misses) I found out that this can be done with a cache friendly transpose function. But I am no...

Recently Herb Sutter gave a great talk on "Modern C++: What You Need to Know". The main theme of this talk was efficiency and how data locality and accessing the memory matters. He has also explain...

Out of curiosity I ran coded up several different versions of matrix Multiplication and ran cachegrind against it. In my results below, I was wondering which parts were L1,L2,L3 misses and referenc...

I am doing some experiments with Cachegrind, Callgrind and Gem5. I noticed that a number of accesses were counted as read for cachegrind, as write for callgrind and for both read and write by gem5....

Suppose that I choose perf events instructions, LLC-load-misses, LLC-store-misses. Suppose further that I test a program prog varying its input. Is valgrind supposed to give me the "same" functiona...