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change(state): Check block and transaction Sprout anchors in parallel #5742

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merged 4 commits into from
Dec 1, 2022

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arya2
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@arya2 arya2 commented Nov 29, 2022

Motivation

We want to run these anchor verifications on a CPU-bound thread pool.

Solution

  • Use a parallel iterator when checking sprout_anchors_refer_to_treestates(..) for a block if sprout_final_treestates is not empty.
  • Use in_place_scope_fifo for running sprout anchors checks on an UnminedTx if the transaction has sprout joinsplit_data

Review

Anyone can review.

Reviewer Checklist

  • Will the PR name make sense to users?
    • Does it need extra CHANGELOG info? (new features, breaking changes, large changes)
  • Are the PR labels correct?
  • Does the code do what the ticket and PR says?
  • How do you know it works? Does it have tests?

@arya2 arya2 requested a review from a team as a code owner November 29, 2022 20:23
@arya2 arya2 requested review from oxarbitrage and teor2345 and removed request for a team November 29, 2022 20:23
@arya2 arya2 self-assigned this Nov 29, 2022
@github-actions github-actions bot added the C-enhancement Category: This is an improvement label Nov 29, 2022
@arya2 arya2 added A-rust Area: Updates to Rust code P-Medium ⚡ A-state Area: State / database changes and removed C-enhancement Category: This is an improvement labels Nov 29, 2022
@arya2 arya2 changed the title change(state): check anchors in parallel change(state): Check anchors in parallel Nov 29, 2022
@arya2 arya2 force-pushed the check-anchors-in-parallel branch from 18f3d33 to 17aa356 Compare November 29, 2022 21:27
@github-actions github-actions bot added the C-enhancement Category: This is an improvement label Nov 29, 2022
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codecov bot commented Nov 29, 2022

Codecov Report

Merging #5742 (fb37958) into main (26ff1b4) will increase coverage by 0.03%.
The diff coverage is 86.20%.

Additional details and impacted files
@@            Coverage Diff             @@
##             main    #5742      +/-   ##
==========================================
+ Coverage   78.74%   78.77%   +0.03%     
==========================================
  Files         306      306              
  Lines       38687    38702      +15     
==========================================
+ Hits        30463    30488      +25     
+ Misses       8224     8214      -10     

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We try to only make performance-related changes where we have evidence of slow code or a denial of service risk.

Otherwise, we could spend a lot of time modifying code that's not performance critical, making it harder to maintain. And sometimes the setup costs exceed any performance gains.

zebra-state/src/service/check/anchors.rs Outdated Show resolved Hide resolved
zebra-state/src/service/check/anchors.rs Outdated Show resolved Hide resolved
zebra-state/src/service/check/anchors.rs Outdated Show resolved Hide resolved
zebra-state/src/service/check/anchors.rs Show resolved Hide resolved
zebra-state/src/service/check/anchors.rs Outdated Show resolved Hide resolved
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Failed due to:

Unable to find image 'us-docker.pkg.dev/zealous-zebra/zebra/zebrad-test:sha-e10d851' locally
docker: Error response from daemon: Get "https://us-docker.pkg.dev/v2/": net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers).

https://github.com/ZcashFoundation/zebra/actions/runs/3578145576/jobs/6018860424#step:8:80

@gustavovalverde any idea why this is happening?

teor2345
teor2345 previously approved these changes Nov 30, 2022
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Thanks, looks good!

@teor2345 teor2345 changed the title change(state): Check anchors in parallel change(state): Check block and transaction Sprout anchors in parallel Nov 30, 2022
@teor2345 teor2345 added C-security Category: Security issues I-heavy Problems with excessive memory, disk, or CPU usage labels Nov 30, 2022
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Failed due to #5384

Base automatically changed from mempool-context-valid to main November 30, 2022 04:40
@mergify mergify bot requested a review from a team as a code owner November 30, 2022 04:40
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This will need a rebase, anyone can re-approve once that's done.

@teor2345 teor2345 removed request for oxarbitrage and a team November 30, 2022 07:40
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Failed due to a temporary network error:

buildx failed with: ERROR: failed to solve: failed to compute cache key: failed to copy: read tcp 172.17.0.2:53916->142.250.114.82:443: read: connection timed out

https://github.com/ZcashFoundation/zebra/actions/runs/3586007091/jobs/6034687982#step:9:503

mergify bot added a commit that referenced this pull request Dec 1, 2022
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arya2 commented Dec 1, 2022

Failed due to #5384 again.

mergify bot added a commit that referenced this pull request Dec 1, 2022
mergify bot added a commit that referenced this pull request Dec 1, 2022
mergify bot added a commit that referenced this pull request Dec 1, 2022
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teor2345 commented Dec 1, 2022

@Mergifyio refresh

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mergify bot commented Dec 1, 2022

refresh

✅ Pull request refreshed

mergify bot added a commit that referenced this pull request Dec 1, 2022
@mergify mergify bot merged commit c838383 into main Dec 1, 2022
@mergify mergify bot deleted the check-anchors-in-parallel branch December 1, 2022 11:35
teor2345 pushed a commit that referenced this pull request Feb 6, 2023
…#5742)

* parallelize anchors checks for blocks

* parallelize anchors checks for unmined_tx

* reverts par_iter in block_sapling_orchard_anchors_refer_to_final_treestates

* moves fetch_sprout_final_treestates out of rayon thread
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A-rust Area: Updates to Rust code A-state Area: State / database changes C-enhancement Category: This is an improvement C-security Category: Security issues I-heavy Problems with excessive memory, disk, or CPU usage
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