chore(dev, releasing): Have Cargo.toml `release` profile match what releases are published with #20034

jszwedko · 2024-03-07T21:52:39Z

Per #17342 (comment) Linux distros commonly rebuild Vector rather than pulling in prebuilt artifacts. They could set the same profile flags we do (or even flags that are deemed to be better suited) but I do see value in "just" having the release profile match how we build and distribute release versions of Vector to serve as the default for anyone else building release builds.

The original intent of having CI set different release flags than were in Cargo.toml was to have faster local release builds when analyzing Vector performance. Now that custom profiles exist, which didn't at the time, I added a custom profile, dev-perf, to be used for this purpose instead.

Ref: #17342 (comment)

…eleases are published with Per #17342 (comment) Linux distros commonly rebuild Vector rather than pulling in prebuilt artifacts. They could set the same profile flags we do (or even flags that are deemed to be better suited) but I do see value in "just" having the `release` profile match how we build and distribute release versions of Vector to serve as the default for anyone else building release builds. The original intent of having CI set different release flags than were in Cargo.toml was to have faster local release builds when analyzing Vector performance. Now that custom profiles exist, which didn't at the time, I added a custom profile, `dev-perf`, to be used for this purpose instead. Ref: #17342 (comment) Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-07T22:02:59Z

Cargo.toml

 [profile.release]
-debug = false # Do not include debug symbols in the executable.


This is the default so I dropped it.

datadog-vectordotdev · 2024-03-07T22:17:23Z

Datadog Report

Branch report: jszwedko/release-profile-default
Commit report: 2356911
Test service: vector

✅ 0 Failed, 7 Passed, 0 Skipped, 25.38s Wall Time

bruceg

This makes sense to me, though I too would appreciate hearing from @tobz or @lukesteensen

Cargo.toml

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-11T18:52:07Z

/ci-run-all

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-11T19:32:13Z

/ci-run-all

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-11T21:11:51Z

/ci-run-all

Signed-off-by: Jesse Szwedko <[email protected]>

…ofile-default

github-actions · 2024-03-12T03:07:56Z

Regression Detector Results

Run ID: bf565250-5af8-45d0-a893-0109b04eee89
Baseline: 4804e17
Comparison: f79bde7
Total CPUs: 7

Performance changes are noted in the perf column of each table:

✅ = significantly better comparison variant performance
❌ = significantly worse comparison variant performance
➖ = no significant change in performance

Significant changes in experiment optimization goals

Confidence level: 90.00%
Effect size tolerance: |Δ mean %| ≥ 5.00%

perf	experiment	goal	Δ mean %	Δ mean % CI
✅	syslog_humio_logs	ingress throughput	+15.43	[+15.30, +15.56]
✅	syslog_log2metric_tag_cardinality_limit_blackhole	ingress throughput	+15.11	[+15.01, +15.22]
✅	syslog_log2metric_splunk_hec_metrics	ingress throughput	+15.01	[+14.87, +15.15]
✅	syslog_regex_logs2metric_ddmetrics	ingress throughput	+14.74	[+14.62, +14.86]
✅	syslog_loki	ingress throughput	+13.32	[+13.25, +13.39]
✅	syslog_splunk_hec_logs	ingress throughput	+12.31	[+12.21, +12.41]
✅	socket_to_socket_blackhole	ingress throughput	+11.25	[+11.18, +11.33]
✅	syslog_log2metric_humio_metrics	ingress throughput	+9.61	[+9.46, +9.76]
✅	datadog_agent_remap_blackhole_acks	ingress throughput	+9.29	[+9.17, +9.41]
✅	otlp_http_to_blackhole	ingress throughput	+8.60	[+8.46, +8.74]
✅	datadog_agent_remap_blackhole	ingress throughput	+8.18	[+8.08, +8.29]
✅	datadog_agent_remap_datadog_logs_acks	ingress throughput	+7.08	[+7.00, +7.17]
✅	otlp_grpc_to_blackhole	ingress throughput	+5.56	[+5.47, +5.65]
✅	datadog_agent_remap_datadog_logs	ingress throughput	+5.54	[+5.42, +5.65]
✅	splunk_hec_route_s3	ingress throughput	+5.29	[+4.79, +5.79]

Fine details of change detection per experiment

perf	experiment	goal	Δ mean %	Δ mean % CI
✅	syslog_humio_logs	ingress throughput	+15.43	[+15.30, +15.56]
✅	syslog_log2metric_tag_cardinality_limit_blackhole	ingress throughput	+15.11	[+15.01, +15.22]
✅	syslog_log2metric_splunk_hec_metrics	ingress throughput	+15.01	[+14.87, +15.15]
✅	syslog_regex_logs2metric_ddmetrics	ingress throughput	+14.74	[+14.62, +14.86]
✅	syslog_loki	ingress throughput	+13.32	[+13.25, +13.39]
✅	syslog_splunk_hec_logs	ingress throughput	+12.31	[+12.21, +12.41]
✅	socket_to_socket_blackhole	ingress throughput	+11.25	[+11.18, +11.33]
✅	syslog_log2metric_humio_metrics	ingress throughput	+9.61	[+9.46, +9.76]
✅	datadog_agent_remap_blackhole_acks	ingress throughput	+9.29	[+9.17, +9.41]
✅	otlp_http_to_blackhole	ingress throughput	+8.60	[+8.46, +8.74]
✅	datadog_agent_remap_blackhole	ingress throughput	+8.18	[+8.08, +8.29]
✅	datadog_agent_remap_datadog_logs_acks	ingress throughput	+7.08	[+7.00, +7.17]
✅	otlp_grpc_to_blackhole	ingress throughput	+5.56	[+5.47, +5.65]
✅	datadog_agent_remap_datadog_logs	ingress throughput	+5.54	[+5.42, +5.65]
✅	splunk_hec_route_s3	ingress throughput	+5.29	[+4.79, +5.79]
➖	fluent_elasticsearch	ingress throughput	+3.72	[+3.24, +4.20]
➖	http_text_to_http_json	ingress throughput	+3.19	[+3.05, +3.34]
➖	http_to_http_acks	ingress throughput	+0.79	[-0.53, +2.10]
➖	http_to_s3	ingress throughput	+0.19	[-0.08, +0.47]
➖	http_to_http_noack	ingress throughput	+0.13	[+0.06, +0.21]
➖	http_to_http_json	ingress throughput	+0.02	[-0.06, +0.10]
➖	enterprise_http_to_http	ingress throughput	+0.01	[-0.05, +0.07]
➖	splunk_hec_indexer_ack_blackhole	ingress throughput	+0.00	[-0.14, +0.14]
➖	splunk_hec_to_splunk_hec_logs_acks	ingress throughput	-0.00	[-0.16, +0.15]
➖	splunk_hec_to_splunk_hec_logs_noack	ingress throughput	-0.01	[-0.13, +0.11]
➖	file_to_blackhole	egress throughput	-0.01	[-2.47, +2.45]
➖	http_elasticsearch	ingress throughput	-4.57	[-4.63, -4.51]

Explanation

A regression test is an A/B test of target performance in a repeatable rig, where "performance" is measured as "comparison variant minus baseline variant" for an optimization goal (e.g., ingress throughput). Due to intrinsic variability in measuring that goal, we can only estimate its mean value for each experiment; we report uncertainty in that value as a 90.00% confidence interval denoted "Δ mean % CI".

For each experiment, we decide whether a change in performance is a "regression" -- a change worth investigating further -- if all of the following criteria are true:

Its estimated |Δ mean %| ≥ 5.00%, indicating the change is big enough to merit a closer look.
Its 90.00% confidence interval "Δ mean % CI" does not contain zero, indicating that if our statistical model is accurate, there is at least a 90.00% chance there is a difference in performance between baseline and comparison variants.
Its configuration does not mark it "erratic".

Signed-off-by: Jesse Szwedko <[email protected]>

github-actions · 2024-03-12T19:03:50Z

Regression Detector Results

Run ID: 1cf02af2-6d9b-41f3-ae63-07e5154a9a1e
Baseline: a7c3dbc
Comparison: fdc1db7
Total CPUs: 7

Performance changes are noted in the perf column of each table:

✅ = significantly better comparison variant performance
❌ = significantly worse comparison variant performance
➖ = no significant change in performance

Significant changes in experiment optimization goals

Confidence level: 90.00%
Effect size tolerance: |Δ mean %| ≥ 5.00%

perf	experiment	goal	Δ mean %	Δ mean % CI
✅	syslog_log2metric_tag_cardinality_limit_blackhole	ingress throughput	+14.22	[+14.07, +14.37]
✅	syslog_log2metric_humio_metrics	ingress throughput	+13.15	[+13.02, +13.29]
✅	syslog_log2metric_splunk_hec_metrics	ingress throughput	+12.71	[+12.54, +12.87]
✅	syslog_loki	ingress throughput	+12.62	[+12.51, +12.72]
✅	syslog_humio_logs	ingress throughput	+11.94	[+11.82, +12.06]
✅	syslog_splunk_hec_logs	ingress throughput	+11.78	[+11.70, +11.86]
✅	syslog_regex_logs2metric_ddmetrics	ingress throughput	+10.62	[+10.46, +10.78]
✅	datadog_agent_remap_blackhole	ingress throughput	+9.82	[+9.69, +9.95]
✅	splunk_hec_route_s3	ingress throughput	+9.74	[+9.23, +10.24]
✅	socket_to_socket_blackhole	ingress throughput	+7.10	[+7.02, +7.18]
✅	fluent_elasticsearch	ingress throughput	+6.48	[+5.99, +6.97]
✅	otlp_grpc_to_blackhole	ingress throughput	+6.42	[+6.33, +6.51]
✅	datadog_agent_remap_blackhole_acks	ingress throughput	+6.34	[+6.22, +6.46]
✅	datadog_agent_remap_datadog_logs	ingress throughput	+6.17	[+6.06, +6.29]
✅	datadog_agent_remap_datadog_logs_acks	ingress throughput	+5.13	[+5.04, +5.22]

Fine details of change detection per experiment

perf	experiment	goal	Δ mean %	Δ mean % CI
✅	syslog_log2metric_tag_cardinality_limit_blackhole	ingress throughput	+14.22	[+14.07, +14.37]
✅	syslog_log2metric_humio_metrics	ingress throughput	+13.15	[+13.02, +13.29]
✅	syslog_log2metric_splunk_hec_metrics	ingress throughput	+12.71	[+12.54, +12.87]
✅	syslog_loki	ingress throughput	+12.62	[+12.51, +12.72]
✅	syslog_humio_logs	ingress throughput	+11.94	[+11.82, +12.06]
✅	syslog_splunk_hec_logs	ingress throughput	+11.78	[+11.70, +11.86]
✅	syslog_regex_logs2metric_ddmetrics	ingress throughput	+10.62	[+10.46, +10.78]
✅	datadog_agent_remap_blackhole	ingress throughput	+9.82	[+9.69, +9.95]
✅	splunk_hec_route_s3	ingress throughput	+9.74	[+9.23, +10.24]
✅	socket_to_socket_blackhole	ingress throughput	+7.10	[+7.02, +7.18]
✅	fluent_elasticsearch	ingress throughput	+6.48	[+5.99, +6.97]
✅	otlp_grpc_to_blackhole	ingress throughput	+6.42	[+6.33, +6.51]
✅	datadog_agent_remap_blackhole_acks	ingress throughput	+6.34	[+6.22, +6.46]
✅	datadog_agent_remap_datadog_logs	ingress throughput	+6.17	[+6.06, +6.29]
✅	datadog_agent_remap_datadog_logs_acks	ingress throughput	+5.13	[+5.04, +5.22]
➖	otlp_http_to_blackhole	ingress throughput	+4.40	[+4.27, +4.53]
➖	http_text_to_http_json	ingress throughput	+3.92	[+3.76, +4.09]
➖	file_to_blackhole	egress throughput	+0.89	[-1.62, +3.40]
➖	http_to_http_noack	ingress throughput	+0.21	[+0.12, +0.30]
➖	http_to_s3	ingress throughput	+0.16	[-0.12, +0.44]
➖	http_to_http_json	ingress throughput	+0.03	[-0.05, +0.10]
➖	splunk_hec_to_splunk_hec_logs_acks	ingress throughput	-0.00	[-0.15, +0.15]
➖	splunk_hec_indexer_ack_blackhole	ingress throughput	-0.01	[-0.15, +0.13]
➖	splunk_hec_to_splunk_hec_logs_noack	ingress throughput	-0.05	[-0.16, +0.07]
➖	enterprise_http_to_http	ingress throughput	-0.07	[-0.14, -0.01]
➖	http_to_http_acks	ingress throughput	-0.21	[-1.52, +1.11]
➖	http_elasticsearch	ingress throughput	-3.67	[-3.76, -3.58]

Explanation

A regression test is an A/B test of target performance in a repeatable rig, where "performance" is measured as "comparison variant minus baseline variant" for an optimization goal (e.g., ingress throughput). Due to intrinsic variability in measuring that goal, we can only estimate its mean value for each experiment; we report uncertainty in that value as a 90.00% confidence interval denoted "Δ mean % CI".

For each experiment, we decide whether a change in performance is a "regression" -- a change worth investigating further -- if all of the following criteria are true:

Its estimated |Δ mean %| ≥ 5.00%, indicating the change is big enough to merit a closer look.
Its 90.00% confidence interval "Δ mean % CI" does not contain zero, indicating that if our statistical model is accurate, there is at least a 90.00% chance there is a difference in performance between baseline and comparison variants.
Its configuration does not mark it "erratic".

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-12T19:27:35Z

/ci-run-k8s

polarathene · 2024-03-15T05:26:54Z

Cargo.toml

 [profile.release]
-debug = false # Do not include debug symbols in the executable.
+lto = true


Is "fat" worthwhile vs "thin"? Technically there's a few variants to choose.

false (default) will opt-out of LTO when codegen-units=1 or opt-level = 0, otherwise it does crate local thin LTO (slightly different than "thin").

"thin" => Thin LTO

"fat" / true => Full LTO (much slower, barely any notable gain)

"off" => Disable LTO

In my testing with build size and time, I didn't see much value from building Vector with "fat" / true. It was notably slower than false / "thin" due to single thread vs multi-thread CPU usage at link time.

From what I've read of those that profile between thin and fat/full LTO there's barely a statistical difference in improvement to warrant the excess build time.

Good thought. Once this is merged, we can benchmark against thin and see what the difference looks like for fat vs. thin. I believe we saw a 5% difference in throughput for fat vs false.

I found this blogpost that explains the difference for lto = false (thin local LTO) vs lto ="thin", where false does thin LTO over each crates codegen units.

I believe we saw a 5% difference in throughput for fat vs false.

That's interesting, would be good to know how that compes to fat vs thin 👍

Was the false comparison done with codegen-units = 1? Because as I mentioned earlier, that would opt-out of LTO and be equivalent to lto = "false".

References:

https://blog.llvm.org/2016/06/thinlto-scalable-and-incremental-lto.html

ThinLTO already performs well compared to LTO, in many cases matching the performance improvement.
In a few cases ThinLTO even outperforms full LTO, most likely because the higher scalability of ThinLTO allows using a more aggressive backend optimization pipeline (similar to that of a non-LTO build).

https://convolv.es/guides/lto/

our recurring dataset shows a 0.23% run-time delta between LLVM’s basic and parallel modes
LLVM’s implementation of parallel LTO achieves nearly all of the run-time performance improvement as seen with basic LTO:

basic LTO reached a 2.86% improvement over non-LTO

while parallel LTO achieved a 2.63% improvement over non-LTO.

Not sure how much it differs between GCC vs Clang as the linker driver. I think with Clang you need to have a compatible version to the Rust toolchain used (at least if doing cross-language LTO) which may not work as well with the CI image builds using cross docker images (Ubuntu)? 🤷‍♂️ (this comment seems to claim a 20% runtime perf improvement by changing linker from GCC to Clang)

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-22T22:06:56Z

/ci-run-k8s

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-22T22:43:36Z

/ci-run-k8s

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-22T23:16:16Z

/ci-run-k8s

…ofile-default

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko · 2024-03-22T23:22:20Z

/ci-run-k8s

jszwedko · 2024-03-22T23:46:30Z

/ci-run-k8s

…ofile-default Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko

/ci-run-all

datadog-vectordotdev · 2024-10-31T22:12:56Z

Datadog Report

Branch report: jszwedko/release-profile-default
Commit report: 348a4c8
Test service: vector

✅ 0 Failed, 7 Passed, 0 Skipped, 25.51s Total Time

jszwedko added the no-changelog Changes in this PR do not need user-facing explanations in the release changelog label Mar 7, 2024

jszwedko requested a review from tobz March 7, 2024 21:52

github-actions bot added the domain: ci Anything related to Vector's CI environment label Mar 7, 2024

jszwedko mentioned this pull request Mar 7, 2024

chore(deps): Try LTO to see if it fixes linking issues on old OSes #17342

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jszwedko commented Mar 7, 2024

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Fix CI errors

7d2cbbd

Signed-off-by: Jesse Szwedko <[email protected]>

Enable building dev packages

ec1efd8

Signed-off-by: Jesse Szwedko <[email protected]>

build dev cross profile

6f7673d

Signed-off-by: Jesse Szwedko <[email protected]>

jszwedko added 2 commits March 11, 2024 18:26

debug isn't a real profile

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Merge remote-tracking branch 'origin/master' into jszwedko/release-pr…

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jszwedko added 3 commits March 11, 2024 20:12

default env vars

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Signed-off-by: Jesse Szwedko <[email protected]>

Try to correct target

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Set target subdir

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fix profiles

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Signed-off-by: Jesse Szwedko <[email protected]>

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Reduced size binary #20064

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Fix cross profile

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Signed-off-by: Jesse Szwedko <[email protected]>

debugging

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Merge remote-tracking branch 'origin/master' into jszwedko/release-pr…

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chore(dev, releasing): Have Cargo.toml `release` profile match what releases are published with #20034

chore(dev, releasing): Have Cargo.toml `release` profile match what releases are published with #20034

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Fine details of change detection per experiment

Explanation

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Fine details of change detection per experiment

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		[profile.release]
		debug = false # Do not include debug symbols in the executable.

chore(dev, releasing): Have Cargo.toml release profile match what releases are published with #20034

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chore(dev, releasing): Have Cargo.toml release profile match what releases are published with #20034

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Regression Detector Results

Significant changes in experiment optimization goals

Fine details of change detection per experiment

Explanation

github-actions bot commented Mar 12, 2024

Regression Detector Results

Significant changes in experiment optimization goals

Fine details of change detection per experiment

Explanation

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chore(dev, releasing): Have Cargo.toml `release` profile match what releases are published with #20034

chore(dev, releasing): Have Cargo.toml `release` profile match what releases are published with #20034

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