microsoft / FASTER
Duplication

Places in code with 6 or more lines that are exactly the same.

Intro
  • For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
  • Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
  • You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.
Learn more...
Duplication Overall
  • 18% duplication:
    • 29,647 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 5,349 duplicated lines
  • 435 duplicates
system18% (5,349 lines)
Duplication per Extension
cs21% (4,393 lines)
h7% (550 lines)
yml85% (236 lines)
cc13% (130 lines)
vcxproj30% (40 lines)
Duplication per Component (primary)
cs/src/core20% (2,816 lines)
cs/remote/src21% (707 lines)
cs/benchmark45% (625 lines)
cc/src/core7% (385 lines)
cc/src/environment27% (258 lines)
ROOT85% (236 lines)
cs/remote/benchmark38% (183 lines)
cc/benchmark-dir8% (52 lines)
cs/playground/AsyncStress6% (30 lines)
cc/src/device2% (25 lines)
cs/src/devices3% (14 lines)
cs/playground/ClassRecoveryDurability4% (12 lines)
cs/benchmark/Properties85% (6 lines)
cc0% (0 lines)
cc/playground/sum_store-dir0% (0 lines)
cc/src/common0% (0 lines)
cs/benchmark/scripts0% (0 lines)
cs/playground/CacheStoreConcurrent0% (0 lines)
cs/playground/FasterLogMLSDTest0% (0 lines)
cs/playground/SumStore0% (0 lines)
cs/playground/TstRunner0% (0 lines)

Duplication Between Components (50+ lines)

G cs/benchmark cs/benchmark cs/remote/benchmark cs/remote/benchmark cs/benchmark--cs/remote/benchmark 491 cs/src/core cs/src/core cs/remote/benchmark--cs/src/core 54

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Longest Duplicates
The list of 20 longest duplicates.
See data for all 435 duplicates...
Size#FoldersFilesLinesCode
174 x 2 cs/src/core/ClientSession
cs/src/core/ClientSession
AdvancedClientSession.cs
ClientSession.cs
 146:797 (43%)
151:807 (41%)
 view
52 x 2 cs/remote/src/FASTER.server
cs/remote/src/FASTER.server
BinaryServerSession.cs
WebsocketServerSession.cs
 227:311 (17%)
548:633 (11%)
 view
51 x 2 cs/benchmark
cs/benchmark
FasterSpanByteYcsbBenchmark.cs
FasterYcsbBenchmark.cs
 250:340 (17%)
245:335 (18%)
 view
51 x 2 cs/src/core/ClientSession
cs/src/core/ClientSession
AdvancedClientSession.cs
ClientSession.cs
 45:141 (12%)
45:141 (12%)
 view
49 x 2 cs/benchmark
cs/benchmark
FasterSpanByteYcsbBenchmark.cs
FasterYcsbBenchmark.cs
 372:456 (17%)
366:450 (17%)
 view
49 x 2 cs/benchmark
cs/remote/benchmark/FASTER.benchmark
FasterYcsbBenchmark.cs
FasterYcsbBenchmark.cs
 366:450 (17%)
399:483 (15%)
 view
49 x 2 cs/benchmark
cs/remote/benchmark/FASTER.benchmark
FasterSpanByteYcsbBenchmark.cs
FasterYcsbBenchmark.cs
 372:456 (17%)
399:483 (15%)
 view
46 x 2 cs/benchmark
cs/remote/benchmark/FASTER.benchmark
RandomGenerator.cs
RandomGenerator.cs
 1:82 (100%)
1:77 (100%)
 view
45 x 2 cs/benchmark
cs/benchmark
FasterSpanByteYcsbBenchmark.cs
FasterYcsbBenchmark.cs
 172:245 (15%)
168:241 (16%)
 view
45 x 2 ROOT
ROOT
azure-pipelines-full.yml
azure-pipelines.yml
 1:53 (33%)
1:53 (31%)
 view
43 x 2 cs/src/core/ClientSession
cs/src/core/ClientSession
AdvancedClientSession.cs
ClientSession.cs
 801:898 (10%)
811:908 (10%)
 view
38 x 2 ROOT
ROOT
azure-pipelines-full.yml
azure-pipelines.yml
 115:156 (27%)
121:162 (26%)
 view
38 x 2 cs/src/core/Allocator
cs/src/core/Allocator
BlittableAllocator.cs
VarLenBlittableAllocator.cs
 155:234 (20%)
260:338 (15%)
 view
35 x 2 ROOT
ROOT
azure-pipelines-full.yml
azure-pipelines.yml
 56:96 (25%)
56:96 (24%)
 view
33 x 2 cs/src/core/Allocator
cs/src/core/Allocator
MallocFixedPageSize.cs
MallocFixedPageSize.cs
 255:320 (10%)
365:430 (10%)
 view
27 x 2 cs/src/core/ClientSession
cs/src/core/ClientSession
AdvancedClientSession.cs
ClientSession.cs
 1014:1065 (6%)
1092:1143 (6%)
 view
24 x 2 cs/src/core/Index/Synchronization
cs/src/core/Index/Synchronization
HybridLogCheckpointTask.cs
HybridLogCheckpointTask.cs
 226:266 (10%)
315:355 (10%)
 view
22 x 2 cs/src/core/Device
cs/src/core/Device
ManagedLocalStorageDevice.cs
ManagedLocalStorageDevice.cs
 285:326 (7%)
336:376 (7%)
 view
21 x 2 cs/benchmark
cs/benchmark
FasterSpanByteYcsbBenchmark.cs
FasterYcsbBenchmark.cs
 127:157 (7%)
123:153 (7%)
 view
20 x 2 cs/remote/benchmark/FASTER.benchmark
cs/src/core/Utilities
Native32.cs
Native32.cs
 17:50 (48%)
188:221 (7%)
 view
Duplicated Units
The list of top 20 duplicated units.
See data for all 67 unit duplicates...
Size#FoldersFilesLinesCode
66 x 2 cs/remote/src/FASTER.server
cs/remote/src/FASTER.server
BinaryServerSession.cs
WebsocketServerSession.cs
 227:309 
548:630 
 view
50 x 2 cs/src/core/ClientSession
cs/src/core/ClientSession
AdvancedClientSession.cs
ClientSession.cs
 44:100 
44:100 
 view
43 x 3 cs/benchmark
cs/benchmark
cs/remote/benchmark/FASTER.benchmark
FasterSpanByteYcsbBenchmark.cs
FasterYcsbBenchmark.cs
FasterYcsbBenchmark.cs
 403:453 
397:447 
430:480 
 view
29 x 2 cs/src/core/ClientSession
cs/src/core/ClientSession
AdvancedClientSession.cs
ClientSession.cs
 788:817 
798:827 
 view
28 x 2 cs/src/core/Index/Synchronization
cs/src/core/Index/Synchronization
HybridLogCheckpointTask.cs
HybridLogCheckpointTask.cs
 231:267 
320:356 
 view
23 x 2 cs/src/core/ClientSession
cs/src/core/ClientSession
AdvancedClientSession.cs
ClientSession.cs
 102:126 
102:126 
 view
21 x 2 cs/src/core/Allocator
cs/src/core/Allocator
BlittableScanIterator.cs
VarLenBlittableScanIterator.cs
 175:201 
160:186 
 view
20 x 2 cs/remote/src/FASTER.server/Servers
cs/remote/src/FASTER.server/Servers
GenericServer.cs
VarLenServer.cs
 102:125 
90:113 
 view
19 x 2 cs/remote/src/FASTER.client
cs/remote/src/FASTER.client
ClientSession.cs
ClientSession.cs
 723:743 
837:857 
 view
19 x 2 cs/remote/src/FASTER.client
cs/remote/src/FASTER.client
ClientSession.cs
ClientSession.cs
 769:789 
814:834 
 view
19 x 2 cs/src/core/ClientSession
cs/src/core/ClientSession
AdvancedClientSession.cs
ClientSession.cs
 875:900 
885:910 
 view
19 x 2 cs/src/core/Index/CheckpointManagement
cs/src/core/Index/Recovery
DeviceLogCommitCheckpointManager.cs
LocalCheckpointManager.cs
 275:294 
280:299 
 view
16 x 2 cs/src/core/Allocator
cs/src/core/Allocator
BlittableAllocator.cs
VarLenBlittableAllocator.cs
 98:115 
205:222 
 view
15 x 2 cs/benchmark
cs/remote/benchmark/FASTER.benchmark
RandomGenerator.cs
RandomGenerator.cs
 63:83 
58:78 
 view
15 x 2 cs/remote/src/FASTER.client
cs/remote/src/FASTER.server
FixedLenSerializer.cs
FixedLenSerializer.cs
 86:102 
104:120 
 view
14 x 2 cs/benchmark
cs/remote/benchmark/FASTER.benchmark
RandomGenerator.cs
RandomGenerator.cs
 21:36 
16:31 
 view
14 x 2 cs/src/core/Allocator
cs/src/core/Allocator
ScanIteratorBase.cs
ScanIteratorBase.cs
 92:106 
213:227 
 view
13 x 2 cc/src/core
cc/src/core
hash_table.h
malloc_fixed_page_size.h
 183:196 
430:443 
 view
13 x 2 cc/src/core
cc/src/core
hash_table.h
malloc_fixed_page_size.h
 239:252 
498:511 
 view
13 x 2 cs/src/core/VarLen
cs/src/core/VarLen
SpanByteAdvancedFunctions.cs
SpanByteFunctions.cs
 26:49 
26:49 
 view