deepseek-ai/3FS
A high-performance distributed file system designed to address the challenges of AI training and inference workloads.
GitHub 
97K
lines of main code
914 files
29K
lines of test code
216 files
5.7K
lines of other code
120 files
2y
age
586 days
31%
main code touched
1 year (77K LOC)
45K
cc
37K
h
6.8K
rs
2.9K
toml
2.4K
hpp
1.5K
py
0.8K
c
0.4K
cpp
CLANG-TIDY
0.1K
clang-tidy
0.05K
sql
IN
0.04K
in
30 days 2026 2025
+0
-0
+179
-102
+1.4K
-315
0

21

105

0

16

54

0

4

0

0

7

26

2026 2025
Rule-of-thumb estimates

Rebuild value

to rebuild
rebuild value

Maintenance effort

per year to maintain
maintenance cost per year
Rules of thumb, not measurements: one man-year rebuilds about 10,000 lines of main code (design, testing and coordination included), and keeping a code base alive takes about 15% of its rebuild value per year (20 man-years of rebuild value need about 3 man-years of maintenance every year). Your changes are remembered in this browser for every report.