Re: A deficiency in lucene code that affects memory footprint and GC
"Misha Dmitriev via java-user" <[email protected]> Fri, 23 Jan 2026 01:30:27 +0000
| Newsgroups | gmane.comp.jakarta.lucene.user |
|---|---|
| Message-ID | <CH9PR21MB585618B24856E95A079F2395C294A@CH9PR21MB5856.namprd21.prod.outlook.com> |
--_000_CH9PR21MB585618B24856E95A079F2395C294ACH9PR21MB5856namp_ Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 SGkgYWdhaW4gRGF2aWQsDQoNCkZvcmdpdmUgbXkgaWdub3JhbmNlLCBzaW5jZSBJJ3ZlIG5ldmVy IGNvbnRyaWJ1dGVkIHRvIGx1Y2VuZSBvciBhcGFjaGUgYmVmb3JlLiBJIGNyZWF0ZWQgYSBnaXQg YnJhbmNoIGJhc2VkIG9uIGx1Y2VuZSBtYWluIGJyYW5jaCBsb2NhbGx5LCBtYWRlLCBidWlsZCwg Y2hlY2tlZCBhbmQgY29tbWl0ZWQgbXkgZml4LCBhbmQgdGhlbiB0cmllZCB0byBjcmVhdGUgYSBQ UiBieSBwdXNoaW5nIHRoYXQgYnJhbmNoLCBzZWUgYmVsb3cuIFVuZm9ydHVuYXRlbHksIEkgZ2V0 IGFuIGVycm9yLiBJIHVzZWQgYSBjbGFzc2ljIFBBVCBhcyBhIHBhc3N3b3JkLCBzbyB0aGUgcHJv YmxlbSBzZWVtcyB0byBiZSBub3Qgd2l0aCBwYXNzd29yZCBpdHNlbGYsIGJ1dCB3aXRoIG5vdCBo YXZpbmcgc29tZSAiYWNjZXNzIHJpZ2h0cyIuIENvdWxkIHlvdSBwbGVhc2UgdGFrZSBhIGxvb2s/ IEkgYW0gdXNpbmcgbXkgZ2l0aHViIGxvZ2luIGNvdW50bWRtLCBlbWFpbCBjb3VudG1kbUBnbWFp bC5jb20NCg0KTWlzaGENCg0KDQokIGdpdCBwdXNoIC11IG9yaWdpbiBvcHRpbWl6ZS1TVEVGLW1h aW4NClVzZXJuYW1lIGZvciAnaHR0cHM6Ly9naXRodWIuY29tJzogY291bnRtZG0NClBhc3N3b3Jk IGZvciAnaHR0cHM6Ly9jb3VudG1kbUBnaXRodWIuY29tJzoNCnJlbW90ZTogUGVybWlzc2lvbiB0 byBhcGFjaGUvbHVjZW5lLmdpdCBkZW5pZWQgdG8gY291bnRtZG0uDQpmYXRhbDogdW5hYmxlIHRv IGFjY2VzcyAnaHR0cHM6Ly9naXRodWIuY29tL2FwYWNoZS9sdWNlbmUuZ2l0Lyc6IFRoZSByZXF1 ZXN0ZWQgVVJMIHJldHVybmVkIGVycm9yOiA0MDMNCg0KX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX18NCkZyb206IERhd2lkIFdlaXNzIDxkYXdpZC53ZWlzc0BnbWFpbC5jb20+DQpTZW50 OiBXZWRuZXNkYXksIEphbnVhcnkgMjEsIDIwMjYgMTA6MjEgUE0NClRvOiBqYXZhLXVzZXJAbHVj ZW5lLmFwYWNoZS5vcmcgPGphdmEtdXNlckBsdWNlbmUuYXBhY2hlLm9yZz4NCkNjOiBNaXNoYSBE bWl0cmlldiA8bWRtaXRyaWV2QGxpbmtlZGluLmNvbT4NClN1YmplY3Q6IFJlOiBBIGRlZmljaWVu Y3kgaW4gbHVjZW5lIGNvZGUgdGhhdCBhZmZlY3RzIG1lbW9yeSBmb290cHJpbnQgYW5kIEdDDQoN Cg0KSGkgTWlzaGEsDQoNClBsZWFzZSBwcm92aWRlIGEgcHVsbCByZXF1ZXN0LiBTbWFsbCwgaXNv bGF0ZWQgaW1wcm92ZW1lbnRzIGFyZSBlYXNpZXIgdG8gcmV2aWV3IGFuZCBwYXJzZSBieSB1cyB0 aGFuIGxhcmdlIGNoYW5nZXMgYnV0IGFsbCBhcmUgd2VsY29tZS4NCg0KQWxzbywgYSBsb3Qgb2Yg KHRyYWluZWQpIGV5ZXMgYXJlIGxvb2tpbmcgYXQgdGhpcyBjb2RlLi4uIHZlcnkgb2Z0ZW4gdGhl IHJlcG9ydHMgb2YgTHVjZW5lIG5vdCBwZXJmb3JtaW5nIHdlbGwgYXJlIGNhdXNlZCBieSB3cm9u ZyB1c2FnZSByYXRoZXIgdGhhbiBwcm9ibGVtcyB3aXRoaW4gdGhlIGltcGxlbWVudGF0aW9uIC0g aXQgd291bGQgYmUgZ29vZCB0byBzaGFyZSB0aGUgZW50aXJlIGNvbnRleHQgb2Ygd2hlbiB0aGUg cHJvYmxlbSBpcyBoYXBwZW5pbmcgYW5kIHRoZSBjb250ZXh0IG9mIG9jY3VycmVuY2UuDQoNCkRh d2lkDQoNCk9uIFdlZCwgSmFuIDIxLCAyMDI2IGF0IDExOjEz4oCvUE0gTWlzaGEgRG1pdHJpZXYg dmlhIGphdmEtdXNlciA8amF2YS11c2VyQGx1Y2VuZS5hcGFjaGUub3JnPG1haWx0bzpqYXZhLXVz ZXJAbHVjZW5lLmFwYWNoZS5vcmc+PiB3cm90ZToNCkhpIEx1Y2VuZSBjb21tdW5pdHksDQoNCkF0 IExpbmtlZEluLCB3ZSB1c2UgbHVjZW5lIGluIHNvbWUgaW1wb3J0YW50IHNlYXJjaCBhcHBzLiBX ZSByZWNlbnRseSBmb3VuZCBzb21lIHByb2JsZW1zIHdpdGggR0MgYW5kIG1lbW9yeSBmb290cHJp bmcgaW4gb25lIG9mIHRoZW0uIFdlIHRvb2sgYSBoZWFwIGR1bXAgYW5kIGFuYWx5emVkIGl0IHdp dGggSlhSYXkgKGh0dHBzOi8vanhyYXkuY29tPGh0dHBzOi8vanhyYXkuY29tLz4pLiBVbmZvcnR1 bmF0ZWx5LCB3ZSBjYW5ub3Qgc2hhcmUgdGhlIGVudGlyZSBqeHJheSBhbmFseXNpcyBkdWUgdG8g c2VjdXJpdHkgcmVzdHJpY3Rpb25zLCBidXQgd2UgY2FuIHNoYXJlIG9uZSBleGNlcnB0IGZyb20g aXQsIHNlZSBiZWxvdy4gSXQgY29tZXMgZnJvbSBzZWN0aW9uIDExIG9mIGp4cmF5IHJlcG9ydCwg 4oCcQmFkIFByaW1pdGl2ZSBBcnJheXPigJ0sIHdoaWNoIHRlbGxzIHVzIGhvdyBtdWNoIG1lbW9y eSBpcyB3YXN0ZWQgZHVlIHRvIGVtcHR5IG9yIHVuZGVyLXV0aWxpemVkIHByaW1pdGl2ZSBhcnJh eXMuIFRoYXQgc2VjdGlvbiBzYXlzIHRoYXQgbmVhcmx5IDRHIG9mIG1lbW9yeSAoMjUuNiUgb2Yg dXNlZCBoZWFwKSBpcyB3YXN0ZWQuIEFuZCBpdCB0dXJucyBvdXQgdGhhdCBtb3N0IG9mIHRoYXQg aXMgZHVlIHRvIGJ5dGVbXSBhcnJheXMgbWFuYWdlZCBieSBTZWdtZW50VGVybXNFbnVtRnJhbWUg Y2xhc3MuDQoNCltYXQ0KDQpUbyBjbGFyaWZ5OiBmcm9tIHRoZSBhYm92ZSBzY3JlZW5zaG90LCBl LmcuIDgwJSBvZiBhbGwgYXJyYXlzIHBvaW50ZWQgYnkgc3VmZml4Qnl0ZXMgZGF0YSBmaWVsZCBh cmUganVzdCBlbXB0eSwgaS5lLiBjb250YWluIG9ubHkgemVyb2VzLCB3aGljaCBsaWtlbHkgbWVh bnMgdGhhdCB0aGV5IGhhdmUgbmV2ZXIgYmVlbiB1c2VkLiBPZiB0aGUgcmVtYWluaW5nIGFycmF5 cywgMyUgYXJlIOKAnHRyYWlsLTBz4oCdLCBpLmUuIGhhdmUgbW9yZSB0aGFuIGEgaGFsZiBvZiB0 cmFpbGluZyB6ZXJvIGVsZW1lbnRzLCBpLmUuIHdlcmUgb25seSBwYXJ0aWFsbHkgdXRpbGl6ZWQu IFNvIG9ubHkgMTclIG9mIHRoZXNlIGFycmF5cyBoYXZlIGJlZW4gdXRpbGl6ZWQgbW9yZSBvciBs ZXNzIGZ1bGx5LiBUaGUgc2FtZSBpcyB0cnVlIGZvciBhbGwgb3RoZXIgYnl0ZVtdIGFycmF5cyBt YW5hZ2VkIGJ5IFNlZ21lbnRUZXJtc0VudW1GcmFtZS4gTm90ZSB0aGF0IGZyb20gb3RoZXIgc2Vj dGlvbnMgb2YgdGhlIGhlYXAgZHVtcCBpdOKAmXMgY2xlYXIgdGhhdCB0aGUgbWFqb3JpdHkgb2Yg dGhlc2Ugb2JqZWN0cyBhcmUgZ2FyYmFnZSwgaS5lLiB0aGV5IGhhdmUgYWxyZWFkeSBiZWVuIHVz ZWQgYW5kIGRpc2NhcmRlZC4gVGh1cywgYXQgbGVhc3QgODAlIG9mIG1lbW9yeSB0aGF0IHdhcyBh bGxvY2F0ZWQgZm9yIHRoZXNlIGJ5dGVbXSBhcnJheXMgaGFzIG5vdCBiZWVuIHVzZWQgYW5kIHdh cyB3YXN0ZWQuIEZyb20gc2VwYXJhdGUgbWVtb3J5IGFsbG9jYXRpb24gcHJvZmlsaW5nLCB3ZSBl c3RpbWF0ZWQgdGhhdCB0aGVzZSBhcnJheXMgYXJlIHJlc3BvbnNpYmxlIGZvciB+Mkcvc2VjIG9m IG1lbW9yeSBhbGxvY2F0aW9uLiBJZiB0aGV5IHdlcmUgYWxsb2NhdGVkIGxhemlseSByYXRoZXIg dGhhbiBlYWdlcmx5LCBpLmUuIGp1c3QgYmVmb3JlIHRoZXkgd291bGQgYmUgcmVhbGx5IHVzZWQs IHdlIGNvdWxkIHBvdGVudGlhbGx5IHJlZHVjZSB0aGVpciBtZW1vcnkgYWxsb2NhdGlvbiByYXRl IHNoYXJlIGZyb20gMkcvc2VjIHRvICgxIC0gMC44KSoyID0gMC40IEcvc2VjLg0KDQpBIHN3aXRj aCBmcm9tIGVhZ2VyIHRvIGxhenkgYWxsb2NhdGlvbiBvZiBzb21lIGRhdGEgc3RydWN0dXJlIGlz IHVzdWFsbHkgZWFzeSB0byBpbXBsZW1lbnQuIExldOKAmXMgdGFrZSBhIHF1aWNrIGxvb2sgYXQg dGhlIHNvdXJjZSBjb2RlPGh0dHBzOi8vZm9zc2llcy5vcmcvbGludXgvd3d3L2x1Y2VuZS0xMC4z LjItc3JjLnRnei9sdWNlbmUtMTAuMy4yL2x1Y2VuZS9iYWNrd2FyZC1jb2RlY3Mvc3JjL2phdmEv b3JnL2FwYWNoZS9sdWNlbmUvYmFja3dhcmRfY29kZWNzL2x1Y2VuZTkwL2Jsb2NrdHJlZS9TZWdt ZW50VGVybXNFbnVtRnJhbWUuamF2YT4uIFRoZSBzdWZmaXhCeXRlcyBhcnJheSB1c2FnZSBoYXMg dGhlIGZvbGxvd2luZyBwYXR0ZXJuOg0KDQovLyBFYWdlciBjb25zdHJ1Y3Rpb24gd2l0aCBoYXJk Y29kZWQgc2l6ZQ0KYnl0ZVtdIHN1ZmZpeEJ5dGVzID0gbmV3IGJ5dGVbMTI4XTsNCg0K4oCmICAv LyBGYXN0IGZvcndhcmQgdG8gdGhlIGxvYWRCbG9jaygpIG1ldGhvZA0K4oCmDQppZiAoc3VmZml4 Qnl0ZXMubGVuZ3RoIDwgbnVtU3VmZml4Qnl0ZXMpIHsNCiAgLy8gSWYgd2UgbmVlZCB0byByZWFk IG1vcmUgdGhhbiAxMjggYnl0ZXMsIGluY3JlYXNlIHRoZSBhcnJheeKApg0KICAvLyDigKYgb3Ig bW9yZSBwcmVjaXNlbHksIHRocm93IGF3YXkgdGhlIG9sZCBhcnJheSBhbmQgYWxsb2NhdGUgYW5v dGhlciBvbmUNCiAgc3VmZml4Qnl0ZXMgPSBuZXcgYnl0ZVtBcnJheVV0aWwub3ZlcnNpemUobnVt U3VmZml4Qnl0ZXMsIDEpXTsNCn0NCg0KRnJvbSB0aGlzIGNvZGUsIGl04oCZcyBjbGVhciB0aGF0 IHR3byBuZWdhdGl2ZSB0aGluZ3MgY2FuIGhhcHBlbjoNCg0KICAxLg0Kc3VmZml4Qnl0ZXMgbWF5 IG5vdCBiZSB1c2VkIGF0IGFsbCAodGhlIGxvYWRCbG9jaygpIG1ldGhvZCBtYXkgbm90IGJlIGNh bGxlZCBvciBtYXkgcmV0dXJuIGVhcmx5KS4gVGhlIG1lbW9yeSB1c2VkIGJ5IHRoZSBhcnJheSB3 aWxsIGJlIGNvbXBsZXRlbHkgd2FzdGVkDQogIDIuDQpJZiBudW1TdWZmaXhCeXRlcyBoYXBwZW5z IHRvIGJlIGdyZWF0ZXIgdGhhbiAxMjgsIHRoZSBjdXJyZW50IGVhZ2VybHkgYWxsb2NhdGVkIGFy cmF5IHdpbGwgYmUgZGlzY2FyZGVkLiBUaGUgbWVtb3J5IHVzZWQgYnkgaXQgd2lsbCBiZSB3YXN0 ZWQuDQoNCkFuZCBhcyBvdXIgaGVhcCBkdW1wIGlsbHVzdHJhdGVzLCB0aGVzZSB0aGluZ3MgbGlr ZWx5IGhhcHBlbiB2ZXJ5IG9mdGVuLiBUbyBhZGRyZXNzIHRoaXMgcHJvYmxlbSwgaXQgd291bGQg YmUgc3VmZmljaWVudCB0byBjaGFuZ2UgdGhlIGNvZGUgYXMgZm9sbG93czoNCg0KLy8gQXZvaWQg ZWFnZXIgY29uc3RydWN0aW9uDQpieXRlW10gc3VmZml4Qnl0ZXM7DQrigKYNCmlmIChzdWZmaXhC eXRlID09IG51bGwgfHwgc3VmZml4Qnl0ZXMubGVuZ3RoIDwgbnVtU3VmZml4Qnl0ZXMpIHsNCiAg Ly8gSWYgd2UgbmVlZCB0byByZWFkIG1vcmUgdGhhbiAxMjggYnl0ZXMsIGluY3JlYXNlIHRoZSBh cnJheeKApg0KICAvLyDigKYgb3IgbW9yZSBwcmVjaXNlbHksIHRocm93IGF3YXkgdGhlIG9sZCBh cnJheSBhbmQgYWxsb2NhdGUgYW5vdGhlciBvbmUNCiAgc3VmZml4Qnl0ZXMgPSBuZXcgYnl0ZVtB cnJheVV0aWwub3ZlcnNpemUobnVtU3VmZml4Qnl0ZXMsIDEpXTsNCn0NCg0KTm90ZSB0aGF0IHJl ZHVjaW5nIG1lbW9yeSBhbGxvY2F0aW9uIHJhdGUgcmVzdWx0cyBwcmltYXJpbHkgaW4gcmVkdWN0 aW9uIG9mIENQVSB1c2FnZSBhbmQvb3IgaW1wcm92ZWQgbGF0ZW5jeS4gVGhhdOKAmXMgYmVjYXVz ZSBlYWNoIG9iamVjdCBhbGxvY2F0aW9uIHJlcXVpcmVzIHdvcmsgZnJvbSB0aGUgSlZNIC0gdXBk YXRpbmcgcG9pbnRlcnMgYW5kIHNldHRpbmcgYWxsIG9iamVjdCBieXRlcyB0byB6ZXJvLiBBbmQg dGhlbiBHQ2luZyB0aGVzZSBvYmplY3RzIGlzIGFsc28gQ1BVLWludGVuc2l2ZSwgYW5kIHJlc3Vs dHMgaW4gcGF1c2luZyBhcHAgdGhyZWFkcywgd2hpY2ggYWZmZWN0cyBsYXRlbmN5LiBIb3dldmVy LCBvbmNlIG1lbW9yeSBhbGxvY2F0aW9uIHJhdGUgaXMgcmVkdWNlZCwgaXQgbWF5IGJlIHBvc3Np YmxlIHRvIGFsc28gcmVkdWNlIHRoZSBKVk0gaGVhcCBtZW1vcnkuIFNvIHRoZSB1bHRpbWF0ZSB3 aW4gaXMgZ29pbmcgdG8gYmUgaW4gYm90aCBDUFUgYW5kIG1lbW9yeS4NCg0KUGxlYXNlIGxldCB1 cyBrbm93IGhvdyB3ZSBjYW4gcHJvY2VlZCB3aXRoIHRoaXMuIFRoZSBwcm9wb3NlZCBjaGFuZ2Ug aXMgdHJpdmlhbCwgYW5kIHRodXMgbWF5YmUgaXQgY2FuIGJlIGRvbmUgcXVpY2tseSBieSBzb21l IGVzdGFibGlzaGVkIEx1Y2VuZSBjb250cmlidXRvci4gSWYgbm90LCBJIGd1ZXNzIEkgY2FuIG1h a2UgaXQgbXlzZWxmIGFuZCB0aGVuIGhvcGUgdGhhdCBpdCBnb2VzIHRocm91Z2ggcmV2aWV3IGFu ZCByZWxlYXNlIGluIHJlYXNvbmFibGUgdGltZS4NCg0KTWlzaGENCg0K --_000_CH9PR21MB585618B24856E95A079F2395C294ACH9PR21MB5856namp_--