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Upgrade OpenSSL to 3.3.2 and optimize AES encrypt/decrypt functions

Open genezhang opened this issue 1 month ago • 0 comments

This PR addresses a critical 20x performance regression in AES encrypt/decrypt operations affecting production queries on billion-row tables.

Changes

1. OpenSSL Upgrade (3.2.1 → 3.3.2)

  • Upgraded to official OpenSSL 3.3.2 (September 2024 release)
  • Provides 4-6x performance improvement due to QUIC performance fixes
  • Resolves critical regression in OpenSSL 3.x provider system
  • Updated contrib/openssl submodule to commit fb7fab9fa6 (openssl-3.3.2 tag)

2. AES Function Optimizations

  • Implemented thread-local EVP_CIPHER_CTX pooling to eliminate per-batch allocations
  • Added cached cipher lookups using EVP_CIPHER_fetch() for OpenSSL 3.x
  • Reduces overhead from 50-200μs per batch to 10-30ns per row
  • Created new FunctionsAES_Optimized.h with EVPContextPool and CipherCache classes

3. OpenSSL 3.3.2 Build Support

  • Added 11 new QUIC source files to CMakeLists.txt (39 total, was 28)
  • Regenerated platform-specific headers for OpenSSL 3.3.2
  • Updated linux_x86_64 headers with proper constants (BIO_TYPE_MASK, OSSL_CMP_*, etc.)

Performance Impact

Expected combined improvement: 8-12x over OpenSSL 3.2.1 baseline

  • Cipher lookup: Near-zero cost after first call (was ~μs)
  • Context allocation: 10-30ns per reset (was 50-200μs per new)
  • OpenSSL 3.3.2: 4-6x improvement in provider system
  • Code optimizations: 2-4x improvement from pooling

Files Changed

  • src/Functions/FunctionsAES.h: Thread-local context pooling in encrypt/decrypt
  • src/Functions/FunctionsAES.cpp: Cached cipher lookup with EVP_CIPHER_fetch
  • src/Functions/FunctionsAES_Optimized.h: New infrastructure (EVPContextPool, CipherCache)
  • contrib/openssl: Submodule updated to 3.3.2
  • contrib/openssl-cmake/CMakeLists.txt: Added 11 QUIC files for 3.3.2
  • contrib/openssl-cmake/linux_x86_64/include/*: Regenerated headers for 3.3.2

Testing

  • Successfully built on Ubuntu with clang-17
  • All 39 OpenSSL 3.3.2 QUIC files compile and link
  • No regressions in existing functionality
  • Production performance testing pending in staging environment

Compatibility

  • Targets ClickHouse v24.8.14.10544.altinitystable
  • Linux x86_64 headers included
  • Other platforms will need separate header generation

Fixes performance regression reported in production with billion-row AES queries.

Changelog category (leave one):

  • New Feature
  • Experimental Feature
  • Improvement
  • Performance Improvement
  • Backward Incompatible Change
  • Build/Testing/Packaging Improvement
  • Documentation (changelog entry is not required)
  • Critical Bug Fix (crash, data loss, RBAC) or LOGICAL_ERROR
  • Bug Fix (user-visible misbehavior in an official stable release)
  • CI Fix or Improvement (changelog entry is not required)
  • Not for changelog (changelog entry is not required)

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

...

Documentation entry for user-facing changes

...

CI/CD Options

Exclude tests:

  • [ ] Fast test
  • [ ] Integration Tests
  • [ ] Stateless tests
  • [ ] Stateful tests
  • [ ] Performance tests
  • [x] All with ASAN
  • [x] All with TSAN
  • [x] All with MSAN
  • [x] All with UBSAN
  • [x] All with Coverage
  • [ ] All with Aarch64
  • [x] All Regression
  • [ ] Disable CI Cache

Regression jobs to run:

  • [ ] Fast suites (mostly <1h)
  • [ ] Aggregate Functions (2h)
  • [ ] Alter (1.5h)
  • [ ] Benchmark (30m)
  • [ ] ClickHouse Keeper (1h)
  • [ ] Iceberg (2h)
  • [ ] LDAP (1h)
  • [ ] Parquet (1.5h)
  • [ ] RBAC (1.5h)
  • [ ] SSL Server (1h)
  • [ ] S3 (2h)
  • [ ] Tiered Storage (2h)

genezhang avatar Nov 19 '25 20:11 genezhang