Reduce benchmark link counts to prevent CI timeout

- BENCHMARK_LINKS: 1000 → 100 for main branch (10x reduction)
- BENCHMARK_BACKGROUND_LINKS: 100000 → 1000 for main branch (100x reduction)
- Updated default values in Rust code to match

The benchmark was taking 6+ hours and timing out because with
100,000 background links per iteration, PostgreSQL operations
were too slow. Criterion warned: "Unable to complete 100 samples
in 5.0s. You may wish to increase target time to 15547.2s"

Fixes #17

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: konard

.github/workflows/rust.yml

@@ -66,10 +66,10 @@ jobs:
           POSTGRES_USER: postgres
           POSTGRES_PASSWORD: postgres
           POSTGRES_DB: postgres
-          # Use 1000 links for main/master branch benchmarks, 10 for pull requests
-          BENCHMARK_LINKS: ${{ (github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master')) && '1000' || '10' }}
-          # Use 100000 background links for main/master branch, 100 for pull requests
-          BENCHMARK_BACKGROUND_LINKS: ${{ (github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master')) && '100000' || '100' }}
+          # Use 100 links for main/master branch benchmarks, 10 for pull requests
+          BENCHMARK_LINKS: ${{ (github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master')) && '100' || '10' }}
+          # Use 1000 background links for main/master branch, 100 for pull requests
+          BENCHMARK_BACKGROUND_LINKS: ${{ (github.event_name == 'push' && (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master')) && '1000' || '100' }}
         run: |
           set -o pipefail
           cargo bench --bench bench -- --output-format bencher | tee out.txt

rust/src/lib.rs

@@ -50,22 +50,22 @@ pub type Result<T, E = Box<dyn error::Error + Sync + Send>> = result::Result<T,
 
 /// Number of background links to create before each benchmark iteration.
 /// Configurable via BENCHMARK_BACKGROUND_LINKS environment variable.
-/// Default: 3000 (for local testing), CI uses 100 for PRs and 100000 for main branch.
+/// Default: 1000 (for local testing), CI uses 100 for PRs and 1000 for main branch.
 pub fn background_links() -> usize {
     env::var("BENCHMARK_BACKGROUND_LINKS")
         .ok()
         .and_then(|s| s.parse().ok())
-        .unwrap_or(3_000)
+        .unwrap_or(1_000)
 }
 
 /// Number of links to create/update/delete in each benchmark operation.
 /// Configurable via BENCHMARK_LINKS environment variable.
-/// Default: 1000 (for local testing), CI uses 10 for PRs and 1000 for main branch.
+/// Default: 100 (for local testing), CI uses 10 for PRs and 100 for main branch.
 pub fn benchmark_links() -> usize {
     env::var("BENCHMARK_LINKS")
         .ok()
         .and_then(|s| s.parse().ok())
-        .unwrap_or(1_000)
+        .unwrap_or(100)
 }
 const PARAMS: &str = "user=postgres dbname=postgres password=postgres host=localhost port=5432";