[NetKAT] Add scale benchmark with realistically large inputs#103
Draft
smolkaj wants to merge 1 commit into
Draft
[NetKAT] Add scale benchmark with realistically large inputs#103smolkaj wants to merge 1 commit into
smolkaj wants to merge 1 commit into
Conversation
|
Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA). View this failed invocation of the CLA check for more information. For the most up to date status, view the checks section at the bottom of the pull request. |
The existing benchmarks compile small fixed policies, so they mostly measure constant overheads and cannot detect asymptotic problems (or improvements) in the backend. This benchmark compiles inputs modeled on real networking workloads - wide forwarding tables, multi-field ACLs, and ring-network reachability via Iterate - parameterized by size, so scaling behavior is visible directly in the output. It immediately demonstrates its value: forwarding table compilation scales super-quadratically at head (8x entries -> 66-100x time; 4096 entries take 3.5 seconds), quantifying the known lack of operation memoization (b/382379263) and giving future optimizations a measurable target. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
What
A benchmark that compiles realistically large NetKAT models, complementing the existing micro-benchmarks (which compile small fixed policies and thus mostly measure constant overheads). Three families, modeled on real networking workloads and parameterized by size so scaling behavior is directly visible:
permitted && !deniedvariant exercisingNot/Andon large sets.Iterateto a fixed point: the workload at the heart of symbolic network verification.Why
Performance work on the backend (#100, #102, #98, #99, and the planned memoization work) needs an instrument that can detect asymptotic effects, not just constant factors. This benchmark immediately earns its keep — at head:
The super-quadratic forwarding-table and reachability scaling quantifies the cost of the known missing operation memoization (b/382379263) and gives that work a measurable target.
Testing
bazel build -c opt //netkat:scale_benchmarkand a full run on head, #100, and #102 (results posted on those PRs).🤖 Generated with Claude Code