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Merged
merged 7 commits into from
Feb 20, 2023
Merged

add some benchmarks for odbv1 memory consumption #11

merged 7 commits into from
Feb 20, 2023

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bbrehm
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@bbrehm bbrehm commented Feb 17, 2023

This adds some benchmarks for joern/odbv1 in order to get a somewhat reproducible baseline.

@bbrehm bbrehm requested a review from mpollmeier February 17, 2023 16:44
@bbrehm bbrehm requested a review from ml86 February 17, 2023 16:50
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bbrehm commented Feb 17, 2023 •
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Example run below (joern importCode from current master of vlc player). We already have our first performance riddle @mpollmeier : We have twice as many NodeRef instances as NodeDb instances (correct number of NodeDb instances, incorrect number of NodeRef instances). Do we understand why that is the case?

[bruhns@bruhnsWS overflowdbv2]$ ./benchJoern/target/universal/stage/bin/bench-joern -J-Xmx20G  -Djdk.attach.allowAttachSelf ./cpg.bin 

VM is version 19.0.2+7 with max heap 20480 mb.


SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.
Graph with 2387850 nodes (709958 calls) and 20220777 edges at ./cpg.bin

<=========
Running complete benchmark in 17489655192 ns  == 17489.655192 ms == 7.3244362887116035 us/node and costing 1156858400 bytes == 1103.2661437988281 MB == 484.47699813639883 bytes/node.
Top 20 account for 92.34579167165143%:
Class, #instances, total size, instances/node, bytes/instance, bytes/node
Object[], 2389516, 425952024, 1.000697698766673,  178.25870343617703, 178.38307431371317
byte[], 3031234, 189729688, 1.26944071026237,  62.59156765858393, 79.45628410494797
overflowdb.AdjacentNodes, 2387850, 57308400, 1.0,  24.0, 24.0
io.shiftleft.codepropertygraph.generated.nodes.Call, 1419916, 56796640, 0.5946420420043135,  40.0, 23.78568168017254
io.shiftleft.codepropertygraph.generated.nodes.CallDb, 709958, 51116976, 0.29732102100215674,  72.0, 21.407113512155288
io.shiftleft.codepropertygraph.generated.nodes.Identifier, 1097266, 43890640, 0.45952048914295285,  40.0, 18.380819565718113
long[], 5, 42029408, 2.0939338735682726E-6,  8405881.6, 17.60136021944427
io.shiftleft.codepropertygraph.generated.nodes.IdentifierDb, 548633, 35112512, 0.22976024457147642,  64.0, 14.704655652574491
Integer, 1799008, 28784128, 0.7534007580040623,  16.0, 12.054412128064996
int[], 452, 21087936, 1.8929162217057186E-4,  46654.72566371682, 8.831348702807965
String, 681085, 16346040, 0.2852293904558494,  24.0, 6.845505370940386
io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifier, 401658, 16066320, 0.16820905835793706,  40.0, 6.728362334317482
io.shiftleft.codepropertygraph.generated.nodes.Literal, 358342, 14333680, 0.1500688904244404,  40.0, 6.002755616977616
io.shiftleft.codepropertygraph.generated.nodes.Block, 303730, 12149200, 0.1271981070837783,  40.0, 5.087924283351132
overflowdb.Node[], 1, 11676976, 4.1878677471365454E-7,  1.1676976E7, 4.8901631174487505
io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifierDb, 200829, 11246424, 0.08410452917896853,  56.0, 4.709853634022237
io.shiftleft.codepropertygraph.generated.nodes.LiteralDb, 179171, 10033576, 0.0750344452122202,  56.0, 4.201928931884331
java.util.concurrent.ConcurrentHashMap$Node[], 50716, 8842880, 0.021239190066377703,  174.3607540026816, 3.7032811943798816
io.shiftleft.codepropertygraph.generated.nodes.BlockDb, 151865, 8504440, 0.06359905354188915,  56.0, 3.561546998345792
io.shiftleft.codepropertygraph.generated.nodes.MethodParameterIn, 182554, 7302160, 0.07645120087107649,  40.0, 3.05804803484306
=========>



<=========
Running copy and load cpg file in 2965010740 ns  == 2965.0107399999997 ms == 1.2417072847959463 us/node and costing 212889912 bytes == 203.02764129638672 MB == 89.15547961555374 bytes/node.
Top 20 account for 95.25464785762136%:
Class, #instances, total size, instances/node, bytes/instance, bytes/node
long[], 13970, 42436376, 0.005850451242749754,  3037.6790264853257, 17.771793035575936
io.shiftleft.codepropertygraph.generated.nodes.Call, 709958, 28398320, 0.29732102100215674,  40.0, 11.89284084008627
io.shiftleft.codepropertygraph.generated.nodes.Identifier, 548633, 21945320, 0.22976024457147642,  40.0, 9.190409782859057
int[], 393, 21020464, 1.6458320246246625E-4,  53487.185750636134, 8.803092321544487
byte[], 81732, 12451800, 0.034228280670896415,  152.34914109528702, 5.214649161379484
Object[], 3951, 12415568, 0.001654626546893649,  3142.3862313338395, 5.199475678958058
overflowdb.Node[], 1, 11676976, 4.1878677471365454E-7,  1.1676976E7, 4.8901631174487505
io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifier, 200829, 8033160, 0.08410452917896853,  40.0, 3.364181167158741
io.shiftleft.codepropertygraph.generated.nodes.Literal, 179171, 7166840, 0.0750344452122202,  40.0, 3.001377808488808
io.shiftleft.codepropertygraph.generated.nodes.Block, 151865, 6074600, 0.06359905354188915,  40.0, 2.543962141675566
java.util.concurrent.ConcurrentHashMap$Node[], 50716, 4648704, 0.021239190066377703,  91.66148749901411, 1.9468157547584648
java.util.concurrent.ConcurrentHashMap$Node, 139703, 4470496, 0.05850576878782168,  32.0, 1.8721846012102938
io.shiftleft.codepropertygraph.generated.nodes.MethodParameterIn, 91277, 3651080, 0.03822560043553824,  40.0, 1.52902401742153
io.shiftleft.codepropertygraph.generated.nodes.MethodParameterOut, 91277, 3651080, 0.03822560043553824,  40.0, 1.52902401742153
java.util.concurrent.ConcurrentHashMap, 50718, 3245952, 0.02124002763992713,  64.0, 1.3593617689553363
io.shiftleft.codepropertygraph.generated.nodes.ControlStructure, 80994, 3239760, 0.03391921603115774,  40.0, 1.3567686412463094
io.shiftleft.codepropertygraph.generated.nodes.Local, 56877, 2275080, 0.02381933538538853,  40.0, 0.9527734154155412
io.shiftleft.codepropertygraph.generated.nodes.Method, 55929, 2237160, 0.023422325522959985,  40.0, 0.9368930209183994
io.shiftleft.codepropertygraph.generated.nodes.MethodReturn, 55929, 2237160, 0.023422325522959985,  40.0, 0.9368930209183994
io.shiftleft.codepropertygraph.generated.nodes.Binding, 37791, 1511640, 0.015826371003203717,  40.0, 0.6330548401281487
=========>



<=========
Running load/create indexes in 33230 ns  == 0.033229999999999996 ms == 1.3916284523734743E-5 us/node and costing 88392 bytes == 0.08429718017578125 MB == 0.03701740059048935 bytes/node.
Top 20 account for 100.0%:
Class, #instances, total size, instances/node, bytes/instance, bytes/node
byte[], 1035, 64352, 4.334443118286325E-4,  62.17584541062802, 0.026949766526373098
String, 1035, 24840, 4.334443118286325E-4,  24.0, 0.010402663483887178
jdk.internal.ref.CleanerImpl$PhantomCleanableRef, -10, -480, -4.187867747136545E-6,  48.0, -2.0101765186255417E-4
java.lang.invoke.MethodHandleNatives$CallSiteContext, -10, -320, -4.187867747136545E-6,  32.0, -1.3401176790836945E-4
=========>



<=========
Running count edges (force complete loading) in 14156499550 ns  == 14156.499549999999 ms == 5.928554787779802 us/node and costing 969210216 bytes == 924.3108901977539 MB == 405.89242037816445 bytes/node.
Top 20 account for 95.22555754818829%:
Class, #instances, total size, instances/node, bytes/instance, bytes/node
Object[], 2389000, 413926328, 1.0004816047909206,  173.2634273754709, 173.34687187218628
byte[], 2992001, 180426632, 1.253010448730029,  60.302998561832034, 75.56028728772745
overflowdb.AdjacentNodes, 2387850, 57308400, 1.0,  24.0, 24.0
io.shiftleft.codepropertygraph.generated.nodes.CallDb, 709958, 51116976, 0.29732102100215674,  72.0, 21.407113512155288
io.shiftleft.codepropertygraph.generated.nodes.IdentifierDb, 548633, 35112512, 0.22976024457147642,  64.0, 14.704655652574491
Integer, 1798992, 28783872, 0.7533940574156668,  16.0, 12.054304918650669
io.shiftleft.codepropertygraph.generated.nodes.Call, 709958, 28398320, 0.29732102100215674,  40.0, 11.89284084008627
io.shiftleft.codepropertygraph.generated.nodes.Identifier, 548633, 21945320, 0.22976024457147642,  40.0, 9.190409782859057
java.util.concurrent.ConcurrentHashMap$Node, 622977, 19935264, 0.2608945285507884,  32.0, 8.348624913625228
String, 623331, 14959944, 0.261042779069037,  24.0, 6.265026697656888
io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifierDb, 200829, 11246424, 0.08410452917896853,  56.0, 4.709853634022237
io.shiftleft.codepropertygraph.generated.nodes.LiteralDb, 179171, 10033576, 0.0750344452122202,  56.0, 4.201928931884331
io.shiftleft.codepropertygraph.generated.nodes.BlockDb, 151865, 8504440, 0.06359905354188915,  56.0, 3.561546998345792
io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifier, 200829, 8033160, 0.08410452917896853,  40.0, 3.364181167158741
io.shiftleft.codepropertygraph.generated.nodes.Literal, 179171, 7166840, 0.0750344452122202,  40.0, 3.001377808488808
io.shiftleft.codepropertygraph.generated.nodes.Block, 151865, 6074600, 0.06359905354188915,  40.0, 2.543962141675566
io.shiftleft.codepropertygraph.generated.nodes.MethodParameterInDb, 91277, 5841728, 0.03822560043553824,  64.0, 2.4464384278744475
io.shiftleft.codepropertygraph.generated.nodes.MethodParameterOutDb, 91277, 5111512, 0.03822560043553824,  56.0, 2.1406336243901416
io.shiftleft.codepropertygraph.generated.nodes.ControlStructureDb, 80994, 4535664, 0.03391921603115774,  56.0, 1.8994760977448333
io.shiftleft.codepropertygraph.generated.nodes.MethodDb, 55929, 4474320, 0.023422325522959985,  80.0, 1.8737860418367989
=========>



<=========
Running count edges again in 368101711 ns  == 368.10171099999997 ms == 0.15415612831626777 us/node and costing 95904 bytes == 0.091461181640625 MB == 0.040163326842138324 bytes/node.
Top 20 account for 100.0%:
Class, #instances, total size, instances/node, bytes/instance, bytes/node
byte[], 1102, 69520, 4.6150302573444733E-4,  63.08529945553539, 0.029114056578093263
String, 1102, 26448, 4.6150302573444733E-4,  24.0, 0.011076072617626736
jdk.internal.ref.CleanerImpl$PhantomCleanableRef, -1, -48, -4.1878677471365454E-7,  48.0, -2.010176518625542E-5
java.lang.invoke.MethodHandleNatives$CallSiteContext, -1, -32, -4.1878677471365454E-7,  32.0, -1.3401176790836945E-5
Integer, 1, 16, 4.1878677471365454E-7,  16.0, 6.700588395418473E-6
=========>



<=========
Running close graph in 368532341 ns  == 368.532341 ms == 0.15433647046506271 us/node and costing -25223528 bytes == -24.055030822753906 MB == -10.563279938019557 bytes/node.
Top 20 account for 99.76764550938314%:
Class, #instances, total size, instances/node, bytes/instance, bytes/node
java.util.concurrent.ConcurrentHashMap$Node, -622940, -19934080, -0.260879033440124,  32.0, -8.348129070083967
byte[], -41558, -3084872, -0.017403940783550054,  74.23052119928774, -1.2919035952844609
Long, -44511, -1068264, -0.018640618129279477,  24.0, -0.4473748351027075
org.h2.mvstore.cache.CacheLongKeyLIRS$Entry, -8019, -449064, -0.0033582511464287958,  56.0, -0.18806206420001256
Object[], -3613, -395816, -0.0015130766170404339,  109.55327982286188, -0.16576250602005987
java.lang.ref.WeakReference, -6166, -197312, -0.002582239252884394,  32.0, -0.08263165609230061
org.h2.mvstore.Page$Leaf, -1780, -85440, -7.454404589903051E-4,  48.0, -0.035781142031534645
int[], 4, 65600, 1.6751470988546182E-6,  16400.0, 0.027472412421215738
org.h2.mvstore.Page$PageReference, -1875, -60000, -7.852252025881023E-4,  32.0, -0.025127206482819273
java.nio.ByteBuffer[], 11, 45232, 4.6066545218502E-6,  4112.0, 0.018942563393848023
String, 1181, 28344, 4.945871809368261E-4,  24.0, 0.011870092342483825
org.h2.mvstore.Chunk, -232, -25984, -9.715853173356786E-5,  112.0, -0.0108817555541596
org.h2.mvstore.Page$PageReference[], -68, -8680, -2.847750068052851E-5,  127.6470588235294, -0.0036350692045145215
Class, 56, 6352, 2.3452059383964653E-5,  113.42857142857143, 0.0026601335929811337
org.h2.mvstore.Page$NonLeaf, -68, -3808, -2.847750068052851E-5,  56.0, -0.0015947400381095965
Integer, -216, -3456, -9.045794333814938E-5,  16.0, -0.00144732709341039
org.h2.mvstore.MVStore$RemovedPageInfo, 103, 2472, 4.3135037795506416E-5,  24.0, 0.001035240907092154
java.lang.invoke.MethodType$ConcurrentWeakInternSet$WeakEntry, 68, 2176, 2.847750068052851E-5,  32.0, 9.112800217769123E-4
jdk.internal.ref.CleanerImpl$PhantomCleanableRef, 35, 1680, 1.4657537114977908E-5,  48.0, 7.035617815189396E-4
=========>



<=========
Running free memory in 9961 ns  == 0.009961 ms == 4.171535062922713E-6 us/node and costing -1155444832 bytes == -1101.9180603027344 MB == -483.8850145528404 bytes/node.
Top 20 account for 92.39256037453114%:
Class, #instances, total size, instances/node, bytes/instance, bytes/node
Object[], -2388659, -425891760, -1.0003387985007433,  178.29742964567149, -178.35783654752183
byte[], -3022523, -189265712, -1.2657926586678392,  62.618452200363734, -79.26197709236342
overflowdb.AdjacentNodes, -2387850, -57308400, -1.0,  24.0, -24.0
io.shiftleft.codepropertygraph.generated.nodes.Call, -1419916, -56796640, -0.5946420420043135,  40.0, -23.78568168017254
io.shiftleft.codepropertygraph.generated.nodes.CallDb, -709958, -51116976, -0.29732102100215674,  72.0, -21.407113512155288
io.shiftleft.codepropertygraph.generated.nodes.Identifier, -1097266, -43890640, -0.45952048914295285,  40.0, -18.380819565718113
long[], -3, -42029376, -1.2563603241409637E-6,  1.4009792E7, -17.60134681826748
io.shiftleft.codepropertygraph.generated.nodes.IdentifierDb, -548633, -35112512, -0.22976024457147642,  64.0, -14.704655652574491
Integer, -1798992, -28783872, -0.7533940574156668,  16.0, -12.054304918650669
int[], -11, -21072552, -4.6066545218502E-6,  1915686.5454545454, -8.82490608706577
String, -672391, -16137384, -0.28158845823648887,  24.0, -6.758122997675733
io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifier, -401658, -16066320, -0.16820905835793706,  40.0, -6.728362334317482
io.shiftleft.codepropertygraph.generated.nodes.Literal, -358342, -14333680, -0.1500688904244404,  40.0, -6.002755616977616
io.shiftleft.codepropertygraph.generated.nodes.Block, -303730, -12149200, -0.1271981070837783,  40.0, -5.087924283351132
overflowdb.Node[], -1, -11676976, -4.1878677471365454E-7,  1.1676976E7, -4.8901631174487505
io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifierDb, -200829, -11246424, -0.08410452917896853,  56.0, -4.709853634022237
io.shiftleft.codepropertygraph.generated.nodes.LiteralDb, -179171, -10033576, -0.0750344452122202,  56.0, -4.201928931884331
java.util.concurrent.ConcurrentHashMap$Node[], -50682, -8826464, -0.021224951316037438,  174.15382186969734, -3.696406390686182
io.shiftleft.codepropertygraph.generated.nodes.BlockDb, -151865, -8504440, -0.06359905354188915,  56.0, -3.561546998345792
io.shiftleft.codepropertygraph.generated.nodes.MethodParameterIn, -182554, -7302160, -0.07645120087107649,  40.0, -3.05804803484306
=========>



# WARNING: Unable to attach Serviceability Agent. You can try again with escalated privileges. Two options: a) use -Djol.tryWithSudo=true to try with sudo; b) echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
VM details according to JOL: # Running 64-bit HotSpot VM.
# Using compressed oop with 3-bit shift.
# Using compressed klass with 3-bit shift.
# WARNING | Compressed references base/shifts are guessed by the experiment!
# WARNING | Therefore, computed addresses are just guesses, and ARE NOT RELIABLE.
# WARNING | Make sure to attach Serviceability Agent to get the reliable addresses.
# Objects are 8 bytes aligned.
# Field sizes by type: 4, 1, 1, 2, 2, 4, 4, 8, 8 [bytes]
# Array element sizes: 4, 1, 1, 2, 2, 4, 4, 8, 8 [bytes]
. Layout of top consumers: 


overflowdb.AdjacentNodes object internals:
OFF  SZ                 TYPE DESCRIPTION                             VALUE
  0   8                      (object header: mark)                   N/A
  8   4                      (object header: class)                  N/A
 12   4   java.lang.Object[] AdjacentNodes.nodesWithEdgeProperties   N/A
 16   4     java.lang.Object AdjacentNodes.offsets                   N/A
 20   4                      (object alignment gap)                  
Instance size: 24 bytes
Space losses: 0 bytes internal + 4 bytes external = 4 bytes total


io.shiftleft.codepropertygraph.generated.nodes.Call object internals:
OFF  SZ                TYPE DESCRIPTION               VALUE
  0   8                     (object header: mark)     N/A
  8   4                     (object header: class)    N/A
 12   4    overflowdb.Graph NodeRef.graph             N/A
 16   8                long NodeRef.id                N/A
 24   4   overflowdb.NodeDb NodeRef.node              N/A
 28   4                     (alignment/padding gap)   
 32   8                long Call.id                   N/A
Instance size: 40 bytes
Space losses: 4 bytes internal + 0 bytes external = 4 bytes total


io.shiftleft.codepropertygraph.generated.nodes.CallDb object internals:
OFF  SZ                                    TYPE DESCRIPTION                       VALUE
  0   8                                         (object header: mark)             N/A
  8   4                                         (object header: class)            N/A
 12   1                                 boolean NodeDb.dirty                      N/A
 13   3                                         (alignment/padding gap)           
 16   4                      overflowdb.NodeRef NodeDb.ref                        N/A
 20   4                overflowdb.AdjacentNodes NodeDb.adjacentNodes              N/A
 24   4                                     int CallDb._argumentIndex             N/A
 28   4                                     int CallDb._order                     N/A
 32   4                        java.lang.String CallDb._argumentName              N/A
 36   4                        java.lang.String CallDb._code                      N/A
 40   4                       java.lang.Integer CallDb._columnNumber              N/A
 44   4                        java.lang.String CallDb._dispatchType              N/A
 48   4   scala.collection.immutable.IndexedSeq CallDb._dynamicTypeHintFullName   N/A
 52   4                       java.lang.Integer CallDb._lineNumber                N/A
 56   4                        java.lang.String CallDb._methodFullName            N/A
 60   4                        java.lang.String CallDb._name                      N/A
 64   4                        java.lang.String CallDb._signature                 N/A
 68   4                        java.lang.String CallDb._typeFullName              N/A
Instance size: 72 bytes
Space losses: 3 bytes internal + 0 bytes external = 3 bytes total


io.shiftleft.codepropertygraph.generated.nodes.Identifier object internals:
OFF  SZ                TYPE DESCRIPTION               VALUE
  0   8                     (object header: mark)     N/A
  8   4                     (object header: class)    N/A
 12   4    overflowdb.Graph NodeRef.graph             N/A
 16   8                long NodeRef.id                N/A
 24   4   overflowdb.NodeDb NodeRef.node              N/A
 28   4                     (alignment/padding gap)   
 32   8                long Identifier.id             N/A
Instance size: 40 bytes
Space losses: 4 bytes internal + 0 bytes external = 4 bytes total


io.shiftleft.codepropertygraph.generated.nodes.IdentifierDb object internals:
OFF  SZ                                    TYPE DESCRIPTION                             VALUE
  0   8                                         (object header: mark)                   N/A
  8   4                                         (object header: class)                  N/A
 12   1                                 boolean NodeDb.dirty                            N/A
 13   3                                         (alignment/padding gap)                 
 16   4                      overflowdb.NodeRef NodeDb.ref                              N/A
 20   4                overflowdb.AdjacentNodes NodeDb.adjacentNodes                    N/A
 24   4                                     int IdentifierDb._argumentIndex             N/A
 28   4                                     int IdentifierDb._order                     N/A
 32   4                        java.lang.String IdentifierDb._argumentName              N/A
 36   4                        java.lang.String IdentifierDb._code                      N/A
 40   4                       java.lang.Integer IdentifierDb._columnNumber              N/A
 44   4   scala.collection.immutable.IndexedSeq IdentifierDb._dynamicTypeHintFullName   N/A
 48   4                       java.lang.Integer IdentifierDb._lineNumber                N/A
 52   4                        java.lang.String IdentifierDb._name                      N/A
 56   4                        java.lang.String IdentifierDb._typeFullName              N/A
 60   4                                         (object alignment gap)                  
Instance size: 64 bytes
Space losses: 3 bytes internal + 4 bytes external = 7 bytes total


io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifier object internals:
OFF  SZ                TYPE DESCRIPTION               VALUE
  0   8                     (object header: mark)     N/A
  8   4                     (object header: class)    N/A
 12   4    overflowdb.Graph NodeRef.graph             N/A
 16   8                long NodeRef.id                N/A
 24   4   overflowdb.NodeDb NodeRef.node              N/A
 28   4                     (alignment/padding gap)   
 32   8                long FieldIdentifier.id        N/A
Instance size: 40 bytes
Space losses: 4 bytes internal + 0 bytes external = 4 bytes total


io.shiftleft.codepropertygraph.generated.nodes.Literal object internals:
OFF  SZ                TYPE DESCRIPTION               VALUE
  0   8                     (object header: mark)     N/A
  8   4                     (object header: class)    N/A
 12   4    overflowdb.Graph NodeRef.graph             N/A
 16   8                long NodeRef.id                N/A
 24   4   overflowdb.NodeDb NodeRef.node              N/A
 28   4                     (alignment/padding gap)   
 32   8                long Literal.id                N/A
Instance size: 40 bytes
Space losses: 4 bytes internal + 0 bytes external = 4 bytes total


io.shiftleft.codepropertygraph.generated.nodes.Block object internals:
OFF  SZ                TYPE DESCRIPTION               VALUE
  0   8                     (object header: mark)     N/A
  8   4                     (object header: class)    N/A
 12   4    overflowdb.Graph NodeRef.graph             N/A
 16   8                long NodeRef.id                N/A
 24   4   overflowdb.NodeDb NodeRef.node              N/A
 28   4                     (alignment/padding gap)   
 32   8                long Block.id                  N/A
Instance size: 40 bytes
Space losses: 4 bytes internal + 0 bytes external = 4 bytes total


io.shiftleft.codepropertygraph.generated.nodes.FieldIdentifierDb object internals:
OFF  SZ                       TYPE DESCRIPTION                        VALUE
  0   8                            (object header: mark)              N/A
  8   4                            (object header: class)             N/A
 12   1                    boolean NodeDb.dirty                       N/A
 13   3                            (alignment/padding gap)            
 16   4         overflowdb.NodeRef NodeDb.ref                         N/A
 20   4   overflowdb.AdjacentNodes NodeDb.adjacentNodes               N/A
 24   4                        int FieldIdentifierDb._argumentIndex   N/A
 28   4                        int FieldIdentifierDb._order           N/A
 32   4           java.lang.String FieldIdentifierDb._argumentName    N/A
 36   4           java.lang.String FieldIdentifierDb._canonicalName   N/A
 40   4           java.lang.String FieldIdentifierDb._code            N/A
 44   4          java.lang.Integer FieldIdentifierDb._columnNumber    N/A
 48   4          java.lang.Integer FieldIdentifierDb._lineNumber      N/A
 52   4                            (object alignment gap)             
Instance size: 56 bytes
Space losses: 3 bytes internal + 4 bytes external = 7 bytes total


io.shiftleft.codepropertygraph.generated.nodes.LiteralDb object internals:
OFF  SZ                                    TYPE DESCRIPTION                          VALUE
  0   8                                         (object header: mark)                N/A
  8   4                                         (object header: class)               N/A
 12   1                                 boolean NodeDb.dirty                         N/A
 13   3                                         (alignment/padding gap)              
 16   4                      overflowdb.NodeRef NodeDb.ref                           N/A
 20   4                overflowdb.AdjacentNodes NodeDb.adjacentNodes                 N/A
 24   4                                     int LiteralDb._argumentIndex             N/A
 28   4                                     int LiteralDb._order                     N/A
 32   4                        java.lang.String LiteralDb._argumentName              N/A
 36   4                        java.lang.String LiteralDb._code                      N/A
 40   4                       java.lang.Integer LiteralDb._columnNumber              N/A
 44   4   scala.collection.immutable.IndexedSeq LiteralDb._dynamicTypeHintFullName   N/A
 48   4                       java.lang.Integer LiteralDb._lineNumber                N/A
 52   4                        java.lang.String LiteralDb._typeFullName              N/A
Instance size: 56 bytes
Space losses: 3 bytes internal + 0 bytes external = 3 bytes total


io.shiftleft.codepropertygraph.generated.nodes.BlockDb object internals:
OFF  SZ                                    TYPE DESCRIPTION                        VALUE
  0   8                                         (object header: mark)              N/A
  8   4                                         (object header: class)             N/A
 12   1                                 boolean NodeDb.dirty                       N/A
 13   3                                         (alignment/padding gap)            
 16   4                      overflowdb.NodeRef NodeDb.ref                         N/A
 20   4                overflowdb.AdjacentNodes NodeDb.adjacentNodes               N/A
 24   4                                     int BlockDb._argumentIndex             N/A
 28   4                                     int BlockDb._order                     N/A
 32   4                        java.lang.String BlockDb._argumentName              N/A
 36   4                        java.lang.String BlockDb._code                      N/A
 40   4                       java.lang.Integer BlockDb._columnNumber              N/A
 44   4   scala.collection.immutable.IndexedSeq BlockDb._dynamicTypeHintFullName   N/A
 48   4                       java.lang.Integer BlockDb._lineNumber                N/A
 52   4                        java.lang.String BlockDb._typeFullName              N/A
Instance size: 56 bytes
Space losses: 3 bytes internal + 0 bytes external = 3 bytes total


io.shiftleft.codepropertygraph.generated.nodes.MethodParameterIn object internals:
OFF  SZ                TYPE DESCRIPTION               VALUE
  0   8                     (object header: mark)     N/A
  8   4                     (object header: class)    N/A
 12   4    overflowdb.Graph NodeRef.graph             N/A
 16   8                long NodeRef.id                N/A
 24   4   overflowdb.NodeDb NodeRef.node              N/A
 28   4                     (alignment/padding gap)   
 32   8                long MethodParameterIn.id      N/A
Instance size: 40 bytes
Space losses: 4 bytes internal + 0 bytes external = 4 bytes total

@bbrehm bbrehm changed the title add some benchmarks add some benchmarks for odbv1 memory consumption Feb 17, 2023
@bbrehm
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bbrehm commented Feb 17, 2023 •
edited
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A further giant fail:

io.shiftleft.codepropertygraph.generated.nodes.Block object internals:
OFF  SZ                TYPE DESCRIPTION               VALUE
  0   8                     (object header: mark)     N/A
  8   4                     (object header: class)    N/A
 12   4    overflowdb.Graph NodeRef.graph             N/A
 16   8                long NodeRef.id                N/A
 24   4   overflowdb.NodeDb NodeRef.node              N/A
 28   4                     (alignment/padding gap)   
 32   8                long Block.id                  N/A
Instance size: 40 bytes
Space losses: 4 bytes internal + 0 bytes external = 4 bytes total

our generated code adds a second id field instead of inheriting, WTF?

PS. Smells like scala/bug#4762

ml86
ml86 requested changes Feb 20, 2023
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@bbrehm bbrehm requested a review from ml86 February 20, 2023 11:26
@bbrehm bbrehm mentioned this pull request Feb 20, 2023
Merged
@mpollmeier
fixup slf4j
ee835e5 
```
SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.
```
@mpollmeier
gitignore
e1007b0
@bbrehm bbrehm mentioned this pull request Feb 20, 2023
Merged
@bbrehm bbrehm merged commit eefa3fd into master Feb 20, 2023
@delete-merged-branch delete-merged-branch bot deleted the bbrehm/benchJoern branch February 20, 2023 15:29
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@ml86 ml86 ml86 approved these changes

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@bbrehm @ml86 @mpollmeier