196369 2019-03-28 12:38:23 -0700 [JSC] Share MarkedBlocks in multiple size classes if # of allocations are small 2019-03-28 20:08:24 -0700 1 1 1 Unclassified WebKit bmalloc WebKit Nightly Build Unspecified Unspecified NEW P2 Normal --- 1 ysuzuki ysuzuki ews-watchlist ggaren oldest_to_newest 1522174 0 ysuzuki 2019-03-28 12:38:23 -0700 The similar thing can be done in bmalloc IsoHeap. I'll first investigate the usage of bmalloc IsoHeap. 1522178 1 366194 ysuzuki 2019-03-28 12:41:55 -0700 Created attachment 366194 Exploring the current status. WIP. This patch is not intended to be landed 1522179 2 ews-watchlist 2019-03-28 12:43:07 -0700 Attachment 366194 did not pass style-queue: ERROR: Source/WebCore/page/mac/PageMac.mm:41: Alphabetical sorting problem. [build/include_order] [4] ERROR: Source/WebCore/ChangeLog:8: You should remove the 'No new tests' and either add and list tests, or explain why no new tests were possible. [changelog/nonewtests] [5] Total errors found: 2 in 6 files If any of these errors are false positives, please file a bug against check-webkit-style. 1522342 3 366236 ysuzuki 2019-03-28 20:06:17 -0700 Created attachment 366236 Patch Investigating the current status, not intend to land this patch 1522343 4 ysuzuki 2019-03-28 20:08:19 -0700 Dump of IsoHeap data on apple.com sites (visiting several pages at apple.com). It seems that utilization is not so bad, but I'm still investigating. 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[20] objectSize:(344),freeable:(0),footprint:(32768),live:(92),committed:(2),utilization:(0.965820) [21] objectSize:(216),freeable:(0),footprint:(32768),live:(148),committed:(2),utilization:(0.975586) [22] objectSize:(248),freeable:(0),footprint:(32768),live:(130),committed:(2),utilization:(0.983887) [23] objectSize:(344),freeable:(0),footprint:(32768),live:(92),committed:(2),utilization:(0.965820) [24] objectSize:(448),freeable:(0),footprint:(32768),live:(70),committed:(2),utilization:(0.957031) [25] objectSize:(256),freeable:(0),footprint:(32768),live:(102),committed:(2),utilization:(0.796875) [26] objectSize:(32),freeable:(0),footprint:(32768),live:(1018),committed:(2),utilization:(0.994141) [27] objectSize:(264),freeable:(0),footprint:(32768),live:(122),committed:(2),utilization:(0.982910) [28] objectSize:(120),freeable:(0),footprint:(32768),live:(256),committed:(2),utilization:(0.937500) [29] 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[39] objectSize:(440),freeable:(0),footprint:(65536),live:(144),committed:(4),utilization:(0.966797) [40] objectSize:(512),freeable:(0),footprint:(114688),live:(205),committed:(7),utilization:(0.915179) [41] objectSize:(544),freeable:(0),footprint:(81920),live:(145),committed:(5),utilization:(0.962891) [42] objectSize:(3400),freeable:(0),footprint:(491520),live:(90),committed:(30),utilization:(0.622559) [43] objectSize:(104),freeable:(0),footprint:(32768),live:(184),committed:(2),utilization:(0.583984) [44] objectSize:(288),freeable:(0),footprint:(32768),live:(103),committed:(2),utilization:(0.905273) [45] objectSize:(232),freeable:(0),footprint:(32768),live:(110),committed:(2),utilization:(0.778809) [46] objectSize:(336),freeable:(0),footprint:(32768),live:(86),committed:(2),utilization:(0.881836) [47] objectSize:(400),freeable:(0),footprint:(32768),live:(74),committed:(2),utilization:(0.903320) [48] objectSize:(296),freeable:(0),footprint:(32768),live:(81),committed:(2),utilization:(0.731689) [49] objectSize:(184),freeable:(0),footprint:(32768),live:(124),committed:(2),utilization:(0.696289) [50] objectSize:(96),freeable:(0),footprint:(32768),live:(296),committed:(2),utilization:(0.867188) [51] objectSize:(72),freeable:(0),footprint:(32768),live:(393),committed:(2),utilization:(0.863525) [52] objectSize:(64),freeable:(0),footprint:(49152),live:(476),committed:(3),utilization:(0.619792) [53] objectSize:(168),freeable:(0),footprint:(49152),live:(286),committed:(3),utilization:(0.977539) [54] objectSize:(88),freeable:(0),footprint:(49152),live:(430),committed:(3),utilization:(0.769857) [55] objectSize:(136),freeable:(0),footprint:(32768),live:(232),committed:(2),utilization:(0.962891) [56] objectSize:(184),freeable:(0),footprint:(49152),live:(220),committed:(3),utilization:(0.823568) [57] objectSize:(368),freeable:(0),footprint:(49152),live:(103),committed:(3),utilization:(0.771159) [58] objectSize:(104),freeable:(0),footprint:(49152),live:(430),committed:(3),utilization:(0.909831) [59] objectSize:(112),freeable:(0),footprint:(49152),live:(295),committed:(3),utilization:(0.672201) [60] objectSize:(160),freeable:(0),footprint:(32768),live:(152),committed:(2),utilization:(0.742188) [61] objectSize:(96),freeable:(0),footprint:(32768),live:(324),committed:(2),utilization:(0.949219) [62] objectSize:(96),freeable:(0),footprint:(32768),live:(302),committed:(2),utilization:(0.884766) [63] objectSize:(232),freeable:(0),footprint:(32768),live:(126),committed:(2),utilization:(0.892090) [64] objectSize:(96),freeable:(0),footprint:(65536),live:(653),committed:(4),utilization:(0.956543) [65] objectSize:(96),freeable:(0),footprint:(32768),live:(230),committed:(2),utilization:(0.673828) [66] objectSize:(96),freeable:(0),footprint:(344064),live:(3547),committed:(21),utilization:(0.989676) [67] 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objectSize:(96),freeable:(0),footprint:(32768),live:(250),committed:(2),utilization:(0.732422) [87] objectSize:(96),freeable:(0),footprint:(32768),live:(250),committed:(2),utilization:(0.732422) [88] objectSize:(632),freeable:(0),footprint:(98304),live:(130),committed:(6),utilization:(0.835775) [89] objectSize:(48),freeable:(0),footprint:(32768),live:(678),committed:(2),utilization:(0.993164) [90] objectSize:(3440),freeable:(0),footprint:(65536),live:(8),committed:(4),utilization:(0.419922) [91] objectSize:(1040),freeable:(0),footprint:(131072),live:(111),committed:(8),utilization:(0.880737) 1522344 5 ews-watchlist 2019-03-28 20:08:24 -0700 Attachment 366236 did not pass style-queue: ERROR: Source/WebCore/page/mac/PageMac.mm:41: Alphabetical sorting problem. [build/include_order] [4] Total errors found: 1 in 7 files If any of these errors are false positives, please file a bug against check-webkit-style. 366194 2019-03-28 12:41:55 -0700 2019-03-28 20:06:17 -0700 Exploring the current status. WIP. 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