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tee: avoid 0fill & heap alloc, remove NamedReader
#12519
Comparing
oech3:tee-uninit
(
19697ab
) with
main
(
395d703
)
CodSpeed Performance Gauge
+37%
Improvement
2
Untouched
317
Ignored
1
Skipped
46
Different runtime environments detected
Some benchmarks with significant performance changes were compared across different runtime environments, which may affect the accuracy of the results.
Learn more about regression causes
.
Benchmarks
Mode
CPU Simulation
Wall Time
Memory
Status
Improvement
Untouched
Ignored
Skipped
366 total
Uses the
Memory instrument
to collect Memory usage metrics.
tee_stdin_file[10000000]
src/uu/tee/benches/tee_bench.rs
CodSpeed Performance Gauge
+45%
102.7 KB
70.7 KB
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
tee_stdin_file[10000000]
src/uu/tee/benches/tee_bench.rs
CodSpeed Performance Gauge
+30%
233.2 µs
179.9 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
du_max_depth_balanced_tree[(6, 4, 10)]
src/uu/du/benches/du_bench.rs
CodSpeed Performance Gauge
+3%
26.2 ms
25.5 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
du_summarize_balanced_tree[(5, 4, 10)]
src/uu/du/benches/du_bench.rs
CodSpeed Performance Gauge
+2%
6.8 ms
6.7 ms
Uses the
Memory instrument
to collect Memory usage metrics.
du_all_wide_tree[(5000, 500)]
src/uu/du/benches/du_bench.rs
CodSpeed Performance Gauge
+1%
1,018.8 KB
1,009.3 KB
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
du_deep_tree[(100, 3)]
src/uu/du/benches/du_bench.rs
CodSpeed Performance Gauge
0%
1.1 ms
1.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
sort_ascii_only[500000]
src/uu/sort/benches/sort_bench.rs
CodSpeed Performance Gauge
0%
325.9 ms
325.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
dd_copy_8k_blocks
src/uu/dd/benches/dd_bench.rs
CodSpeed Performance Gauge
0%
787.3 µs
785.7 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
dd_copy_4k_blocks
src/uu/dd/benches/dd_bench.rs
CodSpeed Performance Gauge
0%
1.1 ms
1.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
du_all_wide_tree[(5000, 500)]
src/uu/du/benches/du_bench.rs
CodSpeed Performance Gauge
0%
16.2 ms
16.2 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
socket_addrs_direct[100000]
src/uu/hostname/benches/hostname_bench.rs
CodSpeed Performance Gauge
0%
54.7 µs
54.7 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
factor_multiple_u64s[2]
src/uu/factor/benches/factor_bench.rs
CodSpeed Performance Gauge
0%
33.1 ms
33.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
timeout_enforced
src/uu/timeout/benches/timeout_bench.rs
CodSpeed Performance Gauge
0%
93.3 µs
93.2 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
b64_decode_synthetic
src/uu/base64/benches/base64_bench.rs
CodSpeed Performance Gauge
0%
63.5 µs
63.4 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
hostname_basic
src/uu/hostname/benches/hostname_bench.rs
CodSpeed Performance Gauge
0%
151.6 µs
151.5 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
sort_unique_utf8_locale
src/uu/sort/benches/sort_locale_utf8_bench.rs
CodSpeed Performance Gauge
0%
35.7 ms
35.7 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
cksum_blake3
src/uu/cksum/benches/cksum_bench.rs
CodSpeed Performance Gauge
0%
93.1 ms
93.1 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
fold_many_lines[100000]
src/uu/fold/benches/fold_bench.rs
CodSpeed Performance Gauge
0%
57.3 ms
57.3 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
csplit_line_number
src/uu/csplit/benches/csplit_bench.rs
CodSpeed Performance Gauge
0%
28.5 ms
28.4 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
dd_copy_1m_blocks
src/uu/dd/benches/dd_bench.rs
CodSpeed Performance Gauge
0%
1.2 ms
1.2 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
timeout_quick_exit
src/uu/timeout/benches/timeout_bench.rs
CodSpeed Performance Gauge
0%
198.8 µs
198.8 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
split_bytes
src/uu/split/benches/split_bench.rs
CodSpeed Performance Gauge
0%
387.7 µs
387.6 µs
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
sort_german_c_locale
src/uu/sort/benches/sort_locale_c_bench.rs
CodSpeed Performance Gauge
0%
36.2 ms
36.2 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
ls_recursive_mixed_tree
src/uu/ls/benches/ls_bench.rs
CodSpeed Performance Gauge
0%
1.2 ms
1.2 ms
Uses the
CPU Simulation instrument
to collect CPU performance metrics.
merge_pre_sorted_files
src/uu/sort/benches/sort_bench_merge.rs
CodSpeed Performance Gauge
0%
102.9 ms
102.9 ms
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Commits
Click on a commit to change the comparison range
Base
main
395d703
+37.23%
tee: avoid 0fill & heap alloc, remove NamedReader
19697ab
9 hours ago
by oech3
© 2026 CodSpeed Technology
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