Warren
a4493b8528
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perf(ssh): Phase 3 BufferPool - preallocate Vec in hot paths
Phase 3: Preallocate Vec with capacity to reduce allocations
channel.rs:
- poll_exec_stdout_and_client(): Vec::with_capacity(channels * 3 + 1)
- poll_exec_stdout_with_fds(): Vec::with_capacity(channels * 2)
cipher.rs:
- AES-CTR decrypt: payload Vec::with_capacity(payload_length)
Performance improvement:
- ~25% total improvement (Phase 1-3 cumulative)
- 100MB transfer: 1 second (~100 MB/s)
- 140x improvement from initial 712 KB/s
Test: 158 passed, 0 failed