87039 – GC allocation trigger should be tuned to system RAM size

RESOLVED FIXED 87039

GC allocation trigger should be tuned to system RAM size

https://bugs.webkit.org/show_bug.cgi?id=87039

Summary GC allocation trigger should be tuned to system RAM size

Geoffrey Garen

Reported 2012-05-21 12:51:51 PDT

GC allocation trigger should be tuned to system RAM

Attachments
Patch (20.47 KB, patch) 2012-05-21 12:57 PDT, Geoffrey Garen	no flags	Details Formatted Diff Diff
Patch (20.52 KB, patch) 2012-05-21 17:19 PDT, Geoffrey Garen	no flags	Details Formatted Diff Diff
Patch (22.01 KB, patch) 2012-05-21 17:51 PDT, Geoffrey Garen	no flags	Details Formatted Diff Diff
Patch (22.05 KB, patch) 2012-05-21 18:09 PDT, Geoffrey Garen	no flags	Details Formatted Diff Diff
Patch (22.05 KB, patch) 2012-05-21 22:51 PDT, Geoffrey Garen	no flags	Details Formatted Diff Diff
Patch (22.06 KB, patch) 2012-05-21 22:54 PDT, Geoffrey Garen	no flags	Details Formatted Diff Diff
Patch (22.01 KB, patch) 2012-05-22 00:08 PDT, Geoffrey Garen	no flags	Details Formatted Diff Diff
Patch (22.23 KB, patch) 2012-05-22 10:16 PDT, Geoffrey Garen	darin: review+	Details Formatted Diff Diff
Show Obsolete (7) View All Add attachment proposed patch, testcase, etc.

Geoffrey Garen

Comment 1 2012-05-21 12:57:09 PDT

Created attachment 143080 [details] Patch

Geoffrey Garen

Comment 2 2012-05-21 12:57:37 PDT

~> cat 32mb_2x_report.txt Benchmark report for SunSpider, V8, V8Real, Kraken, JSBench, JSRegress, and DSP on admins-Mac-Pro (MacPro5,1). VMs tested: "BASE" at /Volumes/Big/ggaren/baseline-webkit/WebKitBuild/Release/DumpRenderTree (r117524) "PATCH" at /Volumes/Big/ggaren/webkit/WebKitBuild/Release/DumpRenderTree (r117524) Collected 12 samples per benchmark/VM, with 4 VM invocations per benchmark. Emitted a call to gc() between sample measurements. Used 1 benchmark iteration per VM invocation for warm-up. Used the jsc-specific preciseTime() function to get microsecond-level timing. Reporting benchmark execution times with 95% confidence intervals in milliseconds. BASE PATCH SunSpider: 3d-cube 8.8941+-0.1494 8.8636+-0.1431 3d-morph 8.6683+-0.0933 8.5974+-0.0502 3d-raytrace 11.8269+-0.5472 ? 11.9260+-0.5203 ? access-binary-trees 2.1292+-0.0343 ? 2.2526+-0.2923 ? might be 1.0579x slower access-fannkuch 8.6984+-0.0413 ? 8.7087+-0.0588 ? access-nbody 4.5317+-0.0756 ? 4.5508+-0.0841 ? access-nsieve 4.2925+-0.0497 4.2407+-0.0343 might be 1.0122x faster bitops-3bit-bits-in-byte 1.6538+-0.0201 1.6388+-0.0171 bitops-bits-in-byte 6.2694+-0.0583 6.2563+-0.0615 bitops-bitwise-and 3.9500+-0.0110 ? 3.9664+-0.0302 ? bitops-nsieve-bits 3.8138+-0.0123 ? 3.8339+-0.0270 ? controlflow-recursive 2.8328+-0.0219 ? 2.8393+-0.0256 ? crypto-aes 9.2119+-0.1793 9.1912+-0.1895 crypto-md5 3.9639+-0.0915 3.9457+-0.0896 crypto-sha1 3.2359+-0.0738 3.2321+-0.0599 date-format-tofte 15.3280+-1.4694 15.2775+-1.3986 date-format-xparb 12.9319+-0.9340 12.4089+-0.8364 might be 1.0421x faster math-cordic 5.0354+-0.1118 5.0257+-0.1147 math-partial-sums 10.6281+-0.0893 10.5541+-0.0589 math-spectral-norm 3.4080+-0.0687 3.3910+-0.0528 regexp-dna 11.5131+-0.1319 11.4066+-0.1042 string-base64 6.4778+-0.7862 ? 6.5431+-0.7522 ? might be 1.0101x slower string-fasta 9.5047+-0.4717 9.4673+-0.4634 string-tagcloud 15.4579+-0.4264 15.4370+-0.4386 string-unpack-code 25.7212+-0.9442 25.6505+-0.8775 string-validate-input 9.6673+-0.6664 9.6198+-0.6672 <arithmetic> * 8.0633+-0.1179 8.0317+-0.1152 might be 1.0039x faster <geometric> 6.5415+-0.0386 6.5313+-0.0554 might be 1.0016x faster <harmonic> 5.2563+-0.0137 ? 5.2599+-0.0433 ? might be 1.0007x slower BASE PATCH V8: crypto 86.9521+-0.5854 ? 86.9597+-0.7046 ? deltablue 181.1783+-2.6885 180.0670+-2.3770 earley-boyer 106.8531+-0.4001 ^ 101.7632+-1.3013 ^ definitely 1.0500x faster raytrace 62.6496+-0.6298 ^ 60.7331+-0.7870 ^ definitely 1.0316x faster regexp 107.0115+-0.6270 ? 108.1183+-0.6245 ? might be 1.0103x slower richards 167.4984+-4.0645 165.5703+-3.0512 might be 1.0116x faster splay 138.5698+-10.0919 124.0909+-10.3125 might be 1.1167x faster <arithmetic> 121.5304+-1.3474 ^ 118.1861+-1.0375 ^ definitely 1.0283x faster <geometric> * 114.6376+-1.0229 ^ 111.4174+-0.9473 ^ definitely 1.0289x faster <harmonic> 107.7348+-0.6623 ^ 104.7347+-0.8084 ^ definitely 1.0286x faster BASE PATCH V8Real: encrypt 0.49169+-0.00053 ^ 0.48928+-0.00046 ^ definitely 1.0049x faster decrypt 8.57254+-0.01124 8.56885+-0.01264 deltablue x2 1.09060+-0.00943 1.08266+-0.01640 earley 3.50025+-0.03544 3.45556+-0.03352 might be 1.0129x faster boyer 18.06434+-0.08127 ^ 16.72847+-0.13415 ^ definitely 1.0799x faster raytrace x2 7.99603+-0.13941 7.92574+-0.10814 regexp x2 31.12863+-0.15945 ^ 30.58857+-0.10219 ^ definitely 1.0177x faster richards x2 0.43927+-0.00474 0.43835+-0.00383 splay x2 1.05560+-0.01627 1.05535+-0.01415 <arithmetic> 8.14636+-0.03777 ^ 7.95882+-0.02451 ^ definitely 1.0236x faster <geometric> * 2.97308+-0.01216 ^ 2.93787+-0.01247 ^ definitely 1.0120x faster <harmonic> 1.26243+-0.00570 1.25739+-0.00728 might be 1.0040x faster BASE PATCH Kraken: ai-astar 948.255+-2.490 945.834+-2.084 audio-beat-detection 233.030+-1.802 232.801+-1.644 audio-dft 336.217+-0.505 ? 336.707+-0.730 ? audio-fft 137.931+-0.244 137.356+-0.514 audio-oscillator 370.937+-2.045 ? 372.775+-2.519 ? imaging-darkroom 328.645+-2.116 ? 328.834+-2.179 ? imaging-desaturate 252.515+-0.189 ^ 252.142+-0.059 ^ definitely 1.0015x faster imaging-gaussian-blur 525.784+-0.771 525.565+-0.498 json-parse-financial 76.493+-0.280 ^ 75.178+-0.267 ^ definitely 1.0175x faster json-stringify-tinderbox 96.903+-0.387 96.843+-0.561 stanford-crypto-aes 102.272+-0.650 101.105+-0.630 might be 1.0115x faster stanford-crypto-ccm 108.876+-0.513 ? 109.114+-0.653 ? stanford-crypto-pbkdf2 222.823+-0.946 ^ 220.772+-0.861 ^ definitely 1.0093x faster stanford-crypto-sha256-iterative 108.472+-0.225 ? 108.650+-0.196 ? <arithmetic> * 274.940+-0.360 274.548+-0.359 might be 1.0014x faster <geometric> 210.293+-0.242 ^ 209.730+-0.274 ^ definitely 1.0027x faster <harmonic> 168.196+-0.262 ^ 167.432+-0.256 ^ definitely 1.0046x faster BASE PATCH JSBench: amazon 20.6667+-0.3128 ? 20.8333+-0.2473 ? facebook 77.5833+-1.6133 ? 78.0833+-1.9245 ? google 112.2500+-4.5019 109.0000+-1.6255 might be 1.0298x faster twitter 59.7500+-0.2874 59.3333+-0.4138 yahoo 25.5000+-0.3318 ? 25.9167+-0.1834 ? might be 1.0163x slower <arithmetic> * 59.1500+-0.8872 58.6333+-0.4961 might be 1.0088x faster <geometric> 48.6889+-0.4728 48.6453+-0.3249 might be 1.0009x faster <harmonic> 39.6202+-0.3632 ? 39.8562+-0.2740 ? might be 1.0060x slower BASE PATCH JSRegress: adapt-to-double-divide 83.4449+-0.1224 ? 83.5295+-0.1573 ? aliased-arguments-getbyval 4.6731+-0.3376 4.5395+-0.2956 might be 1.0294x faster arity-mismatch-inlining 1.4191+-0.0251 ? 1.4315+-0.0318 ? big-int-mul 32.9276+-0.5568 32.6655+-0.4761 boolean-test 4.5333+-0.0345 4.5275+-0.0259 cast-int-to-double 16.2419+-0.0161 ? 16.2871+-0.0744 ? cfg-simplify 7.5803+-0.0165 ? 7.5813+-0.0133 ? cmpeq-obj-to-obj-other 16.6080+-0.2302 ? 16.8659+-0.2006 ? might be 1.0155x slower constant-test 31.2405+-0.0972 31.1822+-0.1006 direct-arguments-getbyval 0.8140+-0.0116 0.8115+-0.0146 double-pollution-getbyval 10.0716+-0.0154 ? 10.0751+-0.0203 ? double-pollution-putbyoffset 5.4735+-0.0803 5.4217+-0.0793 external-arguments-getbyval 5.2910+-0.3174 5.2496+-0.3310 external-arguments-putbyval 8.2970+-0.6693 8.2507+-0.6408 Float32Array-matrix-mult 13.5300+-1.0099 ? 13.6370+-0.9756 ? fold-double-to-int 38.6249+-0.1406 38.5781+-0.0806 function-dot-apply 5.8333+-0.0385 5.7930+-0.0587 function-test 5.3740+-0.0585 ^ 5.2739+-0.0410 ^ definitely 1.0190x faster inline-arguments-access 4.1494+-0.0279 4.1483+-0.0419 inline-arguments-local-escape 46.0531+-2.9262 ? 52.3115+-4.2389 ? might be 1.1359x slower int-overflow-local 118.0483+-0.3662 ? 118.3313+-0.5207 ? Int16Array-bubble-sort 81.0271+-2.4228 80.4548+-2.8448 Int16Array-load-int-mul 18.1688+-0.1824 18.1451+-0.1931 Int8Array-load 5.6627+-0.2763 5.4664+-0.0575 might be 1.0359x faster integer-divide 17.0828+-0.0703 17.0743+-0.0811 method-on-number 219.3700+-3.2640 218.6300+-3.5632 number-test 4.5098+-0.0160 ? 4.5275+-0.0261 ? object-test 4.8996+-0.0269 4.8714+-0.0283 poly-stricteq 104.2680+-0.6172 103.7948+-0.3356 rare-osr-exit-on-local 173.2102+-0.1526 173.0642+-0.1241 simple-activation-demo 63.1580+-0.1389 ? 63.3731+-0.1316 ? slow-convergence 103.9687+-0.6942 ? 104.1182+-0.6530 ? sparse-conditional 2.0699+-0.0246 2.0646+-0.0161 string-hash 16.4398+-0.1261 16.2530+-0.1042 might be 1.0115x faster string-test 4.3049+-0.0373 ? 4.3897+-0.1093 ? might be 1.0197x slower tear-off-arguments 4.6770+-0.3433 4.6492+-0.2970 to-int32-boolean 33.1902+-0.2028 ? 33.2326+-0.1849 ? undefined-test 4.8569+-0.0254 ? 4.8610+-0.0521 ? <arithmetic> 34.7656+-0.1482 ? 34.8806+-0.2190 ? might be 1.0033x slower <geometric> * 13.9761+-0.1355 ? 13.9857+-0.1514 ? might be 1.0007x slower <harmonic> 6.3049+-0.0579 6.2913+-0.0655 might be 1.0022x faster BASE PATCH DSP: filtrr-posterize-tint 56.6053+-0.6600 55.7920+-0.7078 might be 1.0146x faster filtrr-tint-contrast-sat-bright 94.0750+-1.4638 ^ 85.9276+-0.8660 ^ definitely 1.0948x faster filtrr-tint-sat-adj-contr-mult 109.7405+-1.1978 108.5290+-0.7462 might be 1.0112x faster filtrr-blur-overlay-sat-contr 268.6270+-3.0472 266.4193+-4.5360 filtrr-sat-blur-mult-sharpen-contr 336.7590+-4.4060 334.5542+-5.6051 filtrr-sepia-bias 38.3369+-0.7928 ? 38.4364+-0.6893 ? route9-vp8 x5 1883.9348+-17.6787 ? 1886.5193+-12.0586 ? <arithmetic> 938.5289+-8.2715 938.3868+-5.7269 might be 1.0002x faster <geometric> * 404.9495+-1.8710 ^ 400.5049+-1.2215 ^ definitely 1.0111x faster <harmonic> 150.9540+-1.2331 ^ 148.2329+-1.2560 ^ definitely 1.0184x faster BASE PATCH All benchmarks: <arithmetic> 147.5150+-0.7835 147.2358+-0.5412 might be 1.0019x faster <geometric> 22.4585+-0.1002 22.3522+-0.1044 might be 1.0048x faster <harmonic> 5.1313+-0.0177 5.1181+-0.0261 might be 1.0026x faster BASE PATCH Geomean of preferred means: <scaled-result> 42.5566+-0.1818 ^ 42.1645+-0.1087 ^ definitely 1.0093x faster ~>

Geoffrey Garen

Comment 3 2012-05-21 17:19:53 PDT

Created attachment 143144 [details] Patch

Geoffrey Garen

Comment 4 2012-05-21 17:20:32 PDT

Re-uploading to trigger EWS, since I coded the UNIX and WINDOWS versions blind.

WebKit Review Bot

Comment 5 2012-05-21 17:22:59 PDT

Attachment 143144 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 Source/WTF/wtf/AmountOfRAM.cpp:32: Alphabetical sorting problem. [build/include_order] [4] Source/WTF/wtf/AmountOfRAM.cpp:37: Alphabetical sorting problem. [build/include_order] [4] Source/WTF/wtf/AmountOfRAM.cpp:38: Alphabetical sorting problem. [build/include_order] [4] Total errors found: 3 in 15 files If any of these errors are false positives, please file a bug against check-webkit-style.

Build Bot

Comment 6 2012-05-21 17:43:00 PDT

Comment on attachment 143144 [details] Patch Attachment 143144 [details] did not pass win-ews (win): Output: http://queues.webkit.org/results/12730811

Geoffrey Garen

Comment 7 2012-05-21 17:51:38 PDT

Created attachment 143153 [details] Patch

Geoffrey Garen

Comment 8 2012-05-21 18:09:12 PDT

Created attachment 143157 [details] Patch

WebKit Review Bot

Comment 9 2012-05-21 18:11:45 PDT

Attachment 143157 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 Source/WTF/wtf/AmountOfRAM.cpp:32: Alphabetical sorting problem. [build/include_order] [4] Source/WTF/wtf/AmountOfRAM.cpp:37: Alphabetical sorting problem. [build/include_order] [4] Source/WTF/wtf/AmountOfRAM.cpp:38: Alphabetical sorting problem. [build/include_order] [4] Total errors found: 3 in 15 files If any of these errors are false positives, please file a bug against check-webkit-style.

Build Bot

Comment 10 2012-05-21 18:31:23 PDT

Comment on attachment 143157 [details] Patch Attachment 143157 [details] did not pass win-ews (win): Output: http://queues.webkit.org/results/12733810

Build Bot

Comment 11 2012-05-21 19:31:48 PDT

Comment on attachment 143157 [details] Patch Attachment 143157 [details] did not pass win-ews (win): Output: http://queues.webkit.org/results/12736795

Build Bot

Comment 12 2012-05-21 20:33:11 PDT

Comment on attachment 143157 [details] Patch Attachment 143157 [details] did not pass win-ews (win): Output: http://queues.webkit.org/results/12749169

Build Bot

Comment 13 2012-05-21 21:35:23 PDT

Comment on attachment 143157 [details] Patch Attachment 143157 [details] did not pass win-ews (win): Output: http://queues.webkit.org/results/12748282

Geoffrey Garen

Comment 14 2012-05-21 22:51:42 PDT

Created attachment 143192 [details] Patch

Geoffrey Garen

Comment 15 2012-05-21 22:54:19 PDT

Created attachment 143193 [details] Patch

WebKit Review Bot

Comment 16 2012-05-21 22:58:47 PDT

Attachment 143193 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 Source/WTF/wtf/AmountOfRAM.cpp:32: Alphabetical sorting problem. [build/include_order] [4] Source/WTF/wtf/AmountOfRAM.cpp:37: Alphabetical sorting problem. [build/include_order] [4] Source/WTF/wtf/AmountOfRAM.cpp:38: Alphabetical sorting problem. [build/include_order] [4] Total errors found: 3 in 15 files If any of these errors are false positives, please file a bug against check-webkit-style.

Build Bot

Comment 17 2012-05-21 23:17:09 PDT

Comment on attachment 143193 [details] Patch Attachment 143193 [details] did not pass win-ews (win): Output: http://queues.webkit.org/results/12739714

Geoffrey Garen

Comment 18 2012-05-22 00:08:47 PDT

Created attachment 143205 [details] Patch

WebKit Review Bot

Comment 19 2012-05-22 00:12:31 PDT

Attachment 143205 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 Source/WTF/wtf/AmountOfRAM.cpp:32: Alphabetical sorting problem. [build/include_order] [4] Total errors found: 1 in 15 files If any of these errors are false positives, please file a bug against check-webkit-style.

Build Bot

Comment 20 2012-05-22 00:38:54 PDT

Comment on attachment 143205 [details] Patch Attachment 143205 [details] did not pass win-ews (win): Output: http://queues.webkit.org/results/12749233

Geoffrey Garen

Comment 21 2012-05-22 10:16:42 PDT

Created attachment 143323 [details] Patch

WebKit Review Bot

Comment 22 2012-05-22 10:20:05 PDT

Attachment 143323 [details] did not pass style-queue: Failed to run "['Tools/Scripts/check-webkit-style', '--diff-files', u'Source/JavaScriptCore/ChangeLog', u'Source..." exit_code: 1 Source/WTF/wtf/AmountOfRAM.cpp:32: Alphabetical sorting problem. [build/include_order] [4] Total errors found: 1 in 16 files If any of these errors are false positives, please file a bug against check-webkit-style.

Darin Adler

Comment 23 2012-05-22 11:15:17 PDT

Comment on attachment 143323 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=143323&action=review > Source/JavaScriptCore/heap/Heap.cpp:49 > +static const size_t largeHeapSize = 32 * MB; > +static const size_t smallHeapSize = 1 * MB; Can you add “why” comments? > Source/JavaScriptCore/heap/Heap.cpp:158 > + if (heapSize < ramSize / 4) > + return 2 * heapSize; > + if (heapSize < ramSize / 2) > + return 1.5 * heapSize; > + return 1.25 * heapSize; Can you add “why” comments? > Source/JavaScriptCore/heap/Heap.cpp:237 > + , m_ramSize(WTF::amountOfRAM()) The bug title calls this “system RAM” but you chose the term “amount of RAM”. Also not clear why an explicit WTF prefix is needed or helpful. > Source/WTF/wtf/AmountOfRAM.cpp:76 > + static size_t amountOfRAM = computeAmountOfRAM(); Could be static const. > Source/WTF/wtf/AmountOfRAM.h:31 > +WTF_EXPORT_PRIVATE size_t amountOfRAM(); This file is missing "using WTF::amountOfRAM". > Source/WTF/wtf/StdLibExtras.h:110 > static const size_t KB = 1024; Should be lowercase K. Not for this patch, though.

Geoffrey Garen

Comment 24 2012-05-22 12:17:02 PDT

Committed r118019: <http://trac.webkit.org/changeset/118019>

Jessie Berlin

Comment 25 2012-05-22 13:03:27 PDT

(In reply to comment #24) > Committed r118019: <http://trac.webkit.org/changeset/118019> Speculative build fix in http://trac.webkit.org/changeset/118031. Can you please check that it is the right fix?

Geoffrey Garen

Comment 26 2012-05-22 13:46:50 PDT

Follow-up build fix: <http://trac.webkit.org/changeset/118035>.

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Status RESOLVED

Resolution FIXED

Priority P2

Severity Normal

Classification Unclassified

Version 528+ (Nightly build)

Hardware Unspecified

OS Unspecified

Product WebKit

Component New Bugs

Assignee

Geoffrey Garen

Reported

2012-05-21 12:51 PDT

Modified

2012-05-22 13:46 PDT History

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