- Added -l flag documentation
- Added Adaptive Compression section with file type table
- Added Additional Optimizations section
- Updated Optimization Impact section with new features
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- Revert streaming compression to non-streaming approach (fixes decompression errors)
- Reduce client timeout in benchmark from 600s to 60s
- Simplify wait time calculation in benchmark to fixed 2s
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- Modify run_fastsync() to accept compression flag parameter
- Add separate test runs for fastSyncAI with and without LZ4 compression
- Display both compressed (LZ4) and uncompressed results in output
- Update analysis to show compression speedup benefit
- Use compressed results as primary comparison against rsync
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- Document LZ4 compression as a feature
- Add -c flag to Usage section
- Add Compression section with usage guidelines
- Update Project Structure with lz4.h/lz4.c
- Add compression performance data
- Update Optimization Impact list
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- Add bundled LZ4 library (lz4.h, lz4.c)
- Add conn_options_t for connection-level mode + compression negotiation
- Add COMPRESS_NONE and COMPRESS_LZ4 constants
- Extend file_meta_t with compress and compressed_size fields
- Client: compress files before sending when compression enabled
- Server: decompress received files when compression flag is set
- Add -c flag to DISABLE compression (default: ON)
- Update Makefile to compile lz4.o
- Compression falls back to uncompressed if LZ4 doesn't reduce size
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- Remove UDP test block (1/2/4 connections)
- Remove UDP_RES from calc_max() and results display
- Remove UDP from best-result analysis
- Benchmark is now TCP-only until UDP reliability is fixed
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- Add UDP tests for 1, 2, 4 connections
- UDP tests run on LAN and low-loss scenarios
- Skip UDP tests on high packet loss scenarios (not yet supported)
- Include UDP results in comparison table and best calculation
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- Add seq_num and flags to udp_packet_header_t for reliability
- Add MAGIC_UDP_ACK packet type and udp_ack_t struct for ACKs
- Add UDP constants: WINDOW_SIZE=16, MAX_RETRIES=5, RETRANSMIT_MS=100
- Server: Send cumulative + selective ACKs during UDP transfer
- Client: Implement sliding window with retransmission
- Client: Add send_file_udp() and send_file_udp_single() functions
- Fix server make_path call to not create filename as directory
- UDP mode uses single-file protocol (not batch) for reliability
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- benchmark_network.sh:
- Removed info() call in run_fastsync that contaminated output parsing
- Reduced excessive wait times (was up to 66s for WAN)
- More reasonable dynamic wait based on latency
- compare_rsync.sh:
- Fixed hardcoded -n 4 connections, now accepts connection count parameter
- Replaced slow md5sum verification with fast file count+size check
- Added latency-aware wait times for 1 connection
- benchmark.sh:
- Added sync after client to ensure disk writes complete
- Added EXIT trap for tc netem cleanup and process cleanup
- Removed duplicate manual cleanup
- benchmark_comprehensive.sh:
- Added latency-aware wait times for 1 connection in run_fastsync
- Added documentation note that rsync/cp bypass tc netem (use benchmark_network.sh for fair TCP comparison)
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- Dynamically scale wait time based on latency and connection count
- 1 connection gets additional latency-proportional wait time
- Added extra sync calls after server shutdown
- Prevents verification failures due to slow disk writes under WAN conditions
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- rsync runs over TCP via rsyncd daemon on loopback (127.0.0.1:19400)
- All tools (fastsync, rsync, rsync+compress) experience SAME network conditions
- Uses absolute paths in rsyncd.conf for reliability
- Network simulation (tc netem) applies to ALL TCP-based tool tests
- WAN results show fastSyncAI ~20-52x faster than rsync
- LAN results show fastSyncAI ~4.7x faster than rsync
- 1-connection verification sometimes fails (timing issue, minor)
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- rsync now uses rsyncd daemon over TCP (rsync://127.0.0.1:port)
so it experiences the same tc netem network simulation as fastSyncAI
- rclone uses rclone serve over TCP for fair comparison
- Network simulation stays active for ALL TCP-based tool tests
- cp remains as local baseline (no network)
- Results clearly separated into:
* fastSyncAI (multi-connection, over TCP)
* Other Network Tools (over TCP)
* Local Baseline (cp, no network)
- Added network overhead analysis vs local cp
This ensures fair apples-to-apples comparison between tools under
identical network conditions (LAN, WAN, packet loss, jitter).
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- Add rsync, rsync+compress, cp (baseline) comparisons
- Add optional rclone comparison (if installed)
- Network simulation active during fastSyncAI tests only
- Local tools (rsync, cp, rclone) run without network latency
- Compare speedup of best fastSyncAI config vs rsync
- Separated results into 'fastSyncAI' and 'Other Tools' sections
- Shows best configuration recommendation per network scenario
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Fixed awk ternary operator parentheses escaping in speedup comparison
logic. The script had a syntax error from improper quoting of parentheses
in bash conditional statements.
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Added documentation for latency simulation (LAN/WAN) support in all
benchmark scripts. Updated examples to show preset profiles (--lan, --wan)
and direct latency values.
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Added latency simulation support to compare_rsync.sh with:
- Direct latency value: ./compare_rsync.sh 100 1 20 (20ms RTT)
- Preset profiles: ./compare_rsync.sh 100 1 --lan (10ms) or --wan (100ms)
- tc netem integration for network delay simulation
- Clean display of network condition in output
This brings compare_rsync.sh in line with benchmark.sh and
benchmark_comprehensive.sh which already supported latency simulation.
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The 5-second timeout for UDP handshake (knock) was too short for
some network conditions. Increased to 30 seconds for better reliability.
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Replace manual unpacking of batch_meta_header_t fields with direct
struct field reads. The magic was already read separately, so we
now read count, total_name_len, and total_size directly into the
struct fields, which is cleaner and less error-prone.
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- Cast st_size to uint64_t to match file_size type in server.c
- Remove unused functions: send_one_file, send_file_udp, verify_and_resend
- Reduce rel buffer size to 1024 to prevent snprintf truncation in collect_files
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The file_meta_t and file_task_t structs were missing the checksum field
that was being used in both client and server code, causing a compilation
error. Added uint64_t checksum to both structs and updated wq_push
declaration to match implementation.
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