GC for node.exe не работает при запуске сервера с node.exe.Однако при запуске сервера с установленным узлом js правильно запускает GC.Я получаю
<--- Last few GCs --->
[4784:0000019E4B6BC630] 1216762 ms: Mark-sweep 1394.7 (1426.4) -> 1394.5 (1426.4) MB, 1840.3 / 0.0 ms (average mu = 0.060, current mu = 0.008) allocation failure scavenge might not succeed
[4784:0000019E4B6BC630] 1219409 ms: Mark-sweep 1395.4 (1426.4) -> 1395.1 (1426.9) MB, 2644.5 / 0.0 ms (average mu = 0.022, current mu = 0.001) allocation failure scavenge might not succeed
<--- JS stacktrace --->
==== JS stack trace =========================================
Через некоторое время
FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory
1: 00007FF6C9B625FA v8::internal::GCIdleTimeHandler::GCIdleTimeHandler+4810
2: 00007FF6C9B07AA6 uv_loop_fork+80918
3: 00007FF6C9B08680 uv_loop_fork+83952
4: 00007FF6C9F8A7FE v8::internal::FatalProcessOutOfMemory+798
5: 00007FF6C9F8A737 v8::internal::FatalProcessOutOfMemory+599
6: 00007FF6CA263954 v8::internal::Heap::RootIsImmortalImmovable+14788
7: 00007FF6CA259594 v8::internal::Heap::CollectGarbage+7556
8: 00007FF6CA257C68 v8::internal::Heap::CollectGarbage+1112
У нас есть узел Windows и экспресс-сервер.Мы развертываем его для конечного пользователя, используя node.exe.Таким образом, конечный пользователь может просто запустить node.exe ./core/bin/www %hostname% без установки узла js.Но в этом куча постоянно увеличивается.Если мы запустим то же самое с установленным узлом js, GC будет работать правильно с регулярной очисткой памяти.Я попытался --expose-gc и принудительно очистить GC
с помощью node.exe. Память увеличивается следующим образом
17:14:00.079 INFO rss 223.87 MB
17:14:00.079 INFO heapTotal 152.8 MB
17:14:00.079 INFO heapUsed 57.8 MB
17:14:00.079 INFO external 69.04 MB
17:14:00.079 INFO ------------------------------------------------------------------------
17:16:00.021 INFO
cleaningGC
17:16:00.150 INFO rss 284.96 MB
17:16:00.150 INFO heapTotal 244.8 MB
17:16:00.150 INFO heapUsed 95.87 MB
17:16:00.150 INFO external 68.76 MB
17:16:00.150 INFO ------------------------------------------------------------------------
17:18:00.014 INFO
cleaningGC
17:18:00.186 INFO rss 412.16 MB
17:18:00.186 INFO heapTotal 326.4 MB
17:18:00.186 INFO heapUsed 129.88 MB
17:18:00.186 INFO external 68.91 MB
17:18:00.186 INFO ------------------------------------------------------------------------
17:20:00.001 INFO
cleaningGC
17:20:00.136 INFO rss 426.95 MB
17:20:00.136 INFO heapTotal 340.9 MB
17:20:00.136 INFO heapUsed 160.67 MB
17:20:00.136 INFO external 68.73 MB
17:20:00.136 INFO ------------------------------------------------------------------------
17:22:00.004 INFO
cleaningGC
17:22:00.230 INFO rss 582.23 MB
17:22:00.230 INFO heapTotal 431.19 MB
17:22:00.230 INFO heapUsed 192.28 MB
17:22:00.230 INFO external 69.48 MB
17:22:00.230 INFO ------------------------------------------------------------------------
17:24:00.019 INFO
cleaningGC
17:24:00.203 INFO rss 471.99 MB
17:24:00.203 INFO heapTotal 428.19 MB
17:24:00.203 INFO heapUsed 223.51 MB
17:24:00.203 INFO external 68.56 MB
17:24:00.203 INFO ------------------------------------------------------------------------
17:26:00.005 INFO
cleaningGC
17:26:00.256 INFO rss 515.55 MB
17:26:00.256 INFO heapTotal 471.63 MB
17:26:00.256 INFO heapUsed 255 MB
17:26:00.256 INFO external 68.61 MB
17:26:00.256 INFO ------------------------------------------------------------------------
17:28:00.007 INFO
cleaningGC
17:28:00.307 INFO rss 604.43 MB
17:28:00.307 INFO heapTotal 496.63 MB
17:28:00.307 INFO heapUsed 286.41 MB
17:28:00.307 INFO external 68.82 MB
17:28:00.307 INFO ------------------------------------------------------------------------
17:30:00.005 INFO
cleaningGC
17:30:00.338 INFO rss 643.66 MB
17:30:00.338 INFO heapTotal 543.78 MB
17:30:00.338 INFO heapUsed 318.19 MB
17:30:00.338 INFO external 68.8 MB
17:30:00.338 INFO ------------------------------------------------------------------------
17:32:00.019 INFO
cleaningGC
17:32:00.376 INFO rss 687 MB
17:32:00.376 INFO heapTotal 589.78 MB
17:32:00.376 INFO heapUsed 349.49 MB
17:32:00.376 INFO external 68.78 MB
17:32:00.376 INFO ------------------------------------------------------------------------
17:34:00.004 INFO
cleaningGC
17:34:00.387 INFO rss 680.7 MB
17:34:00.387 INFO heapTotal 636.28 MB
17:34:00.387 INFO heapUsed 380.73 MB
17:34:00.387 INFO external 68.74 MB
17:34:00.387 INFO ------------------------------------------------------------------------
17:36:00.002 INFO
cleaningGC
17:36:00.462 INFO rss 749.16 MB
17:36:00.462 INFO heapTotal 689.28 MB
17:36:00.462 INFO heapUsed 411.89 MB
17:36:00.462 INFO external 68.71 MB
17:36:00.462 INFO ------------------------------------------------------------------------
17:38:00.004 INFO
cleaningGC
17:38:00.454 INFO rss 796.45 MB
17:38:00.454 INFO heapTotal 718.28 MB
17:38:00.454 INFO heapUsed 443.08 MB
17:38:00.454 INFO external 69.25 MB
17:38:00.454 INFO ------------------------------------------------------------------------
17:40:00.016 INFO
cleaningGC
17:40:00.487 INFO rss 838.95 MB
17:40:00.487 INFO heapTotal 776.76 MB
17:40:00.487 INFO heapUsed 475.28 MB
17:40:00.487 INFO external 68.63 MB
17:40:00.487 INFO ------------------------------------------------------------------------
17:42:00.003 INFO
cleaningGC
17:42:00.476 INFO rss 895.23 MB
17:42:00.476 INFO heapTotal 809.26 MB
17:42:00.476 INFO heapUsed 506.29 MB
17:42:00.476 INFO external 68.62 MB
17:42:00.476 INFO ------------------------------------------------------------------------
17:44:00.017 INFO
cleaningGC
17:44:00.406 INFO rss 904.31 MB
17:44:00.406 INFO heapTotal 830.26 MB
17:44:00.406 INFO heapUsed 537.07 MB
17:44:00.406 INFO external 68.54 MB
17:44:00.406 INFO ------------------------------------------------------------------------
17:46:00.005 INFO
cleaningGC
17:46:00.410 INFO rss 933.79 MB
17:46:00.410 INFO heapTotal 859.26 MB
17:46:00.410 INFO heapUsed 568.46 MB
17:46:00.410 INFO external 68.54 MB
17:46:00.410 INFO ------------------------------------------------------------------------
17:48:00.005 INFO
cleaningGC
17:48:00.581 INFO rss 952.95 MB
17:48:00.581 INFO heapTotal 880.76 MB
17:48:00.581 INFO heapUsed 600.24 MB
17:48:00.581 INFO external 68.67 MB
17:48:00.581 INFO ------------------------------------------------------------------------
17:50:00.008 INFO
cleaningGC
17:50:00.525 INFO rss 966.46 MB
17:50:00.525 INFO heapTotal 902.76 MB
17:50:00.525 INFO heapUsed 631.18 MB
17:50:00.525 INFO external 68.64 MB
17:50:00.525 INFO ------------------------------------------------------------------------
17:52:00.008 INFO
cleaningGC
17:52:00.592 INFO rss 986.26 MB
17:52:00.592 INFO heapTotal 935.24 MB
17:52:00.592 INFO heapUsed 664.11 MB
17:52:00.592 INFO external 68.61 MB
17:52:00.592 INFO ------------------------------------------------------------------------
17:54:00.007 INFO
cleaningGC
17:54:00.554 INFO rss 1023.01 MB
17:54:00.554 INFO heapTotal 971.74 MB
17:54:00.554 INFO heapUsed 695.08 MB
17:54:00.554 INFO external 68.58 MB
17:54:00.554 INFO ------------------------------------------------------------------------
17:56:00.026 INFO
cleaningGC
17:56:00.610 INFO rss 1058.05 MB
17:56:00.610 INFO heapTotal 983.74 MB
17:56:00.610 INFO heapUsed 726.55 MB
17:56:00.610 INFO external 68.56 MB
С помощью узла .js
Память остается постоянной ~ 250 МБ.
Команда для запуска - node.exe ./core/bin/www %hostname%
Как обойти эту проблему, которую я пробовал
--expose-gc
require('expose-gc');
if (global.gc) { global.gc(); }
var used = process.memoryUsage();
for (var key in used) {
console.log(`${key} ${Math.round(used[key] / 1024 / 1024 * 100) / 100} MB`);
}