Update Marshal to use strings.Builder #18
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Before: Running tool: /usr/local/go/bin/go test -benchmem -run=^$ -bench ^BenchmarkMarshalNEntries$ github.com/go-ldap/ldif goos: linux goarch: amd64 pkg: github.com/go-ldap/ldif cpu: Intel(R) Core(TM) i7-9850H CPU @ 2.60GHz BenchmarkMarshalNEntries/marshal_100-12 1000000000 0.001498 ns/op 0 B/op 0 allocs/op BenchmarkMarshalNEntries/marshal_1000-12 1000000000 0.1485 ns/op 0 B/op 0 allocs/op BenchmarkMarshalNEntries/marshal_10000-12 111295240700 ns/op 94516468448 B/op 349306 allocs/op PASS ok github.com/go-ldap/ldif 13.154s
Looks like at least 2 orders of magnitude improvement at 1000 entries After: Running tool: /usr/local/go/bin/go test -benchmem -run=^$ -bench ^BenchmarkMarshalNEntries$ github.com/go-ldap/ldif goos: linux goarch: amd64 pkg: github.com/go-ldap/ldif cpu: Intel(R) Core(TM) i7-9850H CPU @ 2.60GHz BenchmarkMarshalNEntries/marshal_100-12 1000000000 0.0001769 ns/op 0 B/op 0 allocs/op BenchmarkMarshalNEntries/marshal_1000-12 1000000000 0.001784 ns/op 0 B/op 0 allocs/op BenchmarkMarshalNEntries/marshal_10000-12 1000000000 0.02262 ns/op 0 B/op 0 allocs/op BenchmarkMarshalNEntries/marshal_100000-12 1000000000 0.2143 ns/op 0 B/op 0 allocs/op PASS ok github.com/go-ldap/ldif 3.329s
cpuschma
approved these changes
Aug 20, 2025
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I'm sorry for the delay, @lucastheisen. Thank you very much for your improvements! ❤️ |
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Similar to #6, but a smaller modification, added benchmarks, and should make it past the CI. The benchmarks show a pretty significant improvement:
Before:
After:
Without this (or similar patch), ldif marshaling is basically unusable for a reasonably sized directory.