Travis Downs (@travisdowns)
github

travisdowns

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  • Stars
    star
    1,134
  • Global Rank 27,110 (Top 1.0 %)
  • Followers 412
  • Following 2
  • Registered about 12 years ago
  • Most used languages
    C++
         44.8 %
    C
         27.6 %
    Assembly
         17.2 %
    Java
         3.4 %
    Shell
         3.4 %
    HTML
         3.4 %

Top repositories

1

uarch-bench

A benchmark for low-level CPU micro-architectural features
C++
599
star
2

avx-turbo

Test the non-AVX, AVX2 and AVX-512 speeds across various active core counts
C++
143
star
3

robsize

ROB size testing utility
C++
88
star
4

page-info

Programatically obtain information about the pages backing a given memory region
C
65
star
5

sort-bench

A benchmark for sorting algorithms
C++
51
star
6

travisdowns.github.io

Performance Matters blog content
HTML
42
star
7

concurrency-hierarchy-bench

Supporting code for the concurrency hierarchy described in this blog post: https://travisdowns.github.io/blog/2020/07/06/concurrency-costs.html.
C++
24
star
8

zero-fill-bench

Benchmark for memory store throughput
C++
19
star
9

freq-bench

Fine-grained frequency and voltage transition tests
C++
16
star
10

x86-loop-test

ASM methods to test small loop performance on x86
Assembly
12
star
11

fill-bench

Sometimes picking the right zero makes all the difference
C++
10
star
12

toupper-bench

Benchmark supporting baseless libel against clang-format
C++
10
star
13

store-bench

Benchmark for various store patterns on x86
C
8
star
14

bimodal-performance

Reproduction code for weird bimodal performance on Intel Skylake CPU
C
6
star
15

polyregex

Regex matching in P with backreference (see fine print)
Java
4
star
16

nasm-utils

Miscellaneous macros useful for writing x86 asm in nasm or yasm
Assembly
4
star
17

interrupt-test

Assembly
3
star
18

non-silent

Testing silent vs non-silent L2 evictions
C
2
star
19

divq-test

Tests for div throughput on Intel hardware
Shell
2
star
20

dump-vdso

Dumps the VDSO page
C
2
star
21

uop-test

Tests uop-fusion (micro-fusion) behavior on x86
Assembly
2
star
22

likely-primes-bench

Trying to find "likely primes" quickly
C++
1
star
23

clang-format-find

C++
1
star
24

fio-snippets

Copy & paste read snippets for fio
1
star
25

binary-search

Binary search experiments
C
1
star
26

pf-test

Prefetch tests
C
1
star
27

perf-test

Some very simple binaries to test Linux perf overcounting behavior
Assembly
1
star
28

ceiling_div

Benchmarks for ceiling divide algorithms
C
1
star
29

turbo-cycles-mystery

Trying to figure out what's up with TurboBoost and REF_TSC cycles reported by the x86 perf counters
C++
1
star
30

virtual-dispatch

Code for https://stackoverflow.com/questions/46579750
C++
1
star