Le journal "Garbage collection" d'une JVM est formaté comme suit :
1. Chaque ligne représente une seule opération de ramassage des ordures à partir de l'horodatage.
2. Les tailles avant et après des différentes zones de mémoire de la JVM sont indiquées sous la forme "MemoryArea : BeforeSize->AfterSize(AllocatedSize)" où MemoryArea est l'une des zones suivantes : PSYoungGen, ParOldGen ou Metaspace.
3. Si "MemoryArea :" est omis, il représente la taille avant et après de l'ensemble de la mémoire de la JVM.
4. Chaque ligne indique le temps nécessaire à l'opération en secondes.

Résume le journal suivant et note toute anomalie significative :
2023-03-30T07:00:19.800+0000 : [GC (Allocation Failure) [PSYoungGen : 17197776K->2224032K(21782528K)] 64496630K->49524856K(79218176K), 3.2658630 secs] [Temps : user=4.53 sys=0.00, real=3.27 secs]
2023-03-30T07:01:06.553+0000 : [GC (Échec d'allocation) [PSYoungGen : 17471392K->2195300K(22969344K)] 64772216K->49530782K(80404992K), 3.3074224 secs] [Temps : user=4.63 sys=0.00, real=3.30 secs]
2023-03-30T07:01:56.129+0000 : [GC (Échec d'allocation) [PSYoungGen : 19045732K->2429792K(22598656K)] 66381214K->49767742K(80034304K), 3.5912859 secs] [Temps : user=4.94 sys=0.00, real=3.59 secs]
2023-03-30T07:02:46.034+0000 : [GC (Échec d'allocation) [PSYoungGen : 19280224K->2428421K(23520768K)] 66618174K->49768148K(80956416K), 3.6520001 secs] [Temps : user=5.07 sys=0.03, real=3.65 secs]
2023-03-30T07:03:39.130+0000 : [GC (Échec d'allocation) [PSYoungGen : 20488709K->2600800K(23257088K)] 67828436K->49943004K(80692736K), 3.8378192 secs] [Temps : user=5.19 sys=0.00, real=3.84 secs]
2023-03-30T07:04:31.634+0000 : [GC (Allocation Failure) [PSYoungGen : 20661088K->2550592K(23885312K)] 68003292K->49894476K(81320960K), 3.7886199 secs] [Temps : user=5.15 sys=0.00, real=3.78 secs]
2023-03-30T07:05:28.784+0000 : [GC (Échec d'allocation) [PSYoungGen : 21416768K->2709510K(23698432K)] 68760652K->50055163K(81134080K), 3.9951697 secs] [Temps : user=5.54 sys=0.00, real=3.99 secs]
2023-03-30T07:06:24.857+0000 : [GC (Allocation Failure) [PSYoungGen : 21575686K->2709696K(24113664K)] 68921339K->50058933K(81549312K), 4.0210395 secs] [Temps : user=5.47 sys=0.01, real=4.02 secs]
2023-03-30T07:07:21.991+0000 : [GC (Allocation Failure) [PSYoungGen : 22106304K->2835749K(24000512K)] 69455541K->50186794K(81436160K), 4.0703042 secs] [Temps : user=5.76 sys=0.00, real=4.06 secs]
2023-03-30T07:08:18.668+0000 : [GC (Allocation Failure) [PSYoungGen : 22232357K->2785312K(24265216K)] 69583402K->50204626K(81700864K), 4.1296625 secs] [Temps : user=5.77 sys=0.00, real=4.13 secs]
2023-03-30T07:09:16.891+0000 : [GC (Allocation Failure) [PSYoungGen : 22510624K->2834405K(24177664K)] 69929938K->50255520K(81613312K), 4.2070487 secs] [Temps : user=5.89 sys=0.01, real=4.21 secs]
2023-03-30T07:10:15.553+0000 : [GC (Allocation Failure) [PSYoungGen : 22559717K->2842896K(24403456K)] 69980832K->50266688K(81839104K), 4.2489383 secs] [Temps : user=5.83 sys=0.02, real=4.24 secs]
2023-03-30T07:11:15.412+0000 : [GC (Échec d'allocation) [PSYoungGen : 22863632K->2880069K(24334848K)] 70287424K->50306742K(81770496K), 4.2983311 secs] [Temps : user=6.01 sys=0.00, real=4.29 secs]
2023-03-30T07:12:17.330+0000 : [GC (Échec d'allocation) [PSYoungGen : 22900805K->2670097K(24596992K)] 70327478K->50099432K(82032640K), 3.9450690 secs] [Temps : user=5.44 sys=0.00, real=3.95 secs]
2023-03-30T07:13:15.713+0000 : [GC (Allocation Failure) [PSYoungGen : 23009297K->2684375K(24459776K)] 70438632K->50115773K(81895424K), 3.9758416 secs] [Temps : user=5.53 sys=0.00, real=3.97 secs]
2023-03-30T07:14:12.939+0000 : [GC (Allocation Failure) [PSYoungGen : 23023575K->2678912K(24829952K)] 70454973K->50113093K(82265600K), 3.9702778 secs] [Temps : user=5.52 sys=0.00, real=3.97 secs]
2023-03-30T07:15:12.343+0000 : [GC (Échec d'allocation) [PSYoungGen : 23508608K->2753575K(24717312K)] 70942789K->50189628K(82152960K), 4.0754481 secs] [Temps : user=5.72 sys=0.00, real=4.08 secs]
2023-03-30T07:16:13.026+0000 : [GC (Allocation Failure) [PSYoungGen : 23583271K->2762097K(24974336K)] 71019324K->50201762K(82409984K), 4.1128461 secs] [Temps : user=5.66 sys=0.00, real=4.11 secs]
2023-03-30T07:17:14.129+0000 : [GC (Échec d'allocation) [PSYoungGen : 23924593K->2797957K(24905728K)] 71364258K->50239629K(82341376K), 4.1456776 secs] [Temps : user=5.74 sys=0.01, real=4.15 secs]
2023-03-30T07:18:14.857+0000 : [GC (Allocation Failure) [PSYoungGen : 23960453K->2804721K(25075712K)] 71402125K->50249103K(82511360K), 4.1905285 secs] [Temps : user=5.73 sys=0.01, real=4.19 secs]
2023-03-30T07:19:15.979+0000 : [GC (Allocation Failure) [PSYoungGen : 24189937K->3641846K(25027072K)] 71634319K->51171235K(82462720K), 3.6175882 secs] [Temps : user=5.94 sys=0.00, real=3.62 secs]
2023-03-30T07:22:24.484+0000 : [GC (Allocation Failure) [PSYoungGen : 25027062K->3360979K(24336896K)] 72556451K->52269877K(81772544K), 0.4407322 secs] [Temps : user=5.66 sys=0.00, real=0.44 secs]
2023-03-30T07:22:38.974+0000 : [GC (Allocation Failure) [PSYoungGen : 24007379K->4035567K(24681984K)] 72916277K->57145380K(82117632K), 0.8531910 secs] [Temps : user=10.80 sys=0.23, real=0.85 secs]
2023-03-30T07:22:52.666+0000 : [GC (Allocation Failure) [PSYoungGen : 24677029K->24677029K(24681984K)] 77786841K->82112670K(82117632K), 7.3509182 secs] [Temps : user=22.60 sys=11.27, real=7.35 secs]
2023-03-30T07:23:00.017+0000 : [GC complet (Ergonomie) [PSYoungGen : 24677029K->0K(24681984K)] [ParOldGen : 57435641K->57435322K(57435648K)] 82112670K->57435322K(82117632K), [Metaspace : 241941K->241941K(260096K)], 26.4487596 secs] [Temps : user=313.82 sys=2.44, real=26.45 secs]
2023-03-30T07:24:07.186+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->12427037K(24681984K)] [ParOldGen : 57435322K->57435609K(57435648K)] 78081722K->69862646K(82117632K), [Metaspace : 241947K->241947K(260096K)], 28.8675082 secs] [Temps : user=350.97 sys=1.74, real=28.87 secs]
2023-03-30T07:24:36.057+0000 : [GC complet (System.gc()) [PSYoungGen : 12730000K->12427055K(24681984K)] [ParOldGen : 57435609K->57435556K(57435648K)] 70165609K->69862611K(82117632K), [Metaspace : 241947K->241947K(260096K)], 31.3736816 secs] [Temps : user=379.38 sys=2.94, real=31.37 secs]
2023-03-30T07:25:18.096+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->16985330K(24681984K)] [ParOldGen : 57435556K->57435308K(57435648K)] 78081956K->74420638K(82117632K), [Metaspace : 241999K->241999K(260096K)], 31.4762980 secs] [Temps : user=363.38 sys=3.10, real=31.48 secs]
2023-03-30T07:25:54.537+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->19116969K(24681984K)] [ParOldGen : 57435308K->57435152K(57435648K)] 78081708K->76552122K(82117632K), [Metaspace : 241999K->241999K(260096K)], 31.0418139 secs] [Temps : user=377.34 sys=2.75, real=31.04 secs]
2023-03-30T07:26:27.487+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->19955901K(24681984K)] [ParOldGen : 57435152K->57435290K(57435648K)] 78081552K->77391191K(82117632K), [Metaspace : 241999K->241999K(260096K)], 22.9475977 secs] [Temps : user=280.80 sys=1.57, real=22.95 secs]
2023-03-30T07:26:51.319+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20340549K(24681984K)] [ParOldGen : 57435290K->57435523K(57435648K)] 78081690K->77776072K(82117632K), [Metaspace : 242004K->242004K(260096K)], 37.2564843 secs] [Temps : user=458.29 sys=3.35, real=37.26 secs]
2023-03-30T07:27:28.892+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20465997K(24681984K)] [ParOldGen : 57435523K->57435230K(57435648K)] 78081923K->77901227K(82117632K), [Metaspace : 242007K->242007K(260096K)], 31.4213545 sec] [Temps : user=382.65 sys=2.74, real=31.42 secs]
2023-03-30T07:28:00.350+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20492397K(24681984K)] [ParOldGen : 57435230K->57435139K(57435648K)] 78081630K->77927536K(82117632K), [Metaspace : 242011K->242011K(260096K)], 17.3069966 secs] [Temps : user=209.34 sys=0.45, real=17.31 secs]
2023-03-30T07:28:17.694+0000 : [GC complet (Ergonomie) [PSYoungGen : 20639999K->20482496K(24681984K)] [ParOldGen : 57435139K->57435581K(57435648K)] 78075138K->77918078K(82117632K), [Metaspace : 242023K->242023K(260096K)], 39.0253664 secs] [Temps : user=478.37 sys=3.87, real=39.02 secs]
2023-03-30T07:28:56.752+0000 : [GC complet (Ergonomie) [PSYoungGen : 20629482K->20490559K(24681984K)] [ParOldGen : 57435581K->57435269K(57435648K)] 78065064K->77925828K(82117632K), [Metaspace : 242023K->242023K(260096K)], 32.7146380 sec] [Temps : user=398.86 sys=2.93, real=32.71 secs]
2023-03-30T07:29:29.592+0000 : [GC complet (Ergonomie) [PSYoungGen : 20627596K->20498740K(24681984K)] [ParOldGen : 57435269K->57435482K(57435648K)] 78062865K->77934223K(82117632K), [Metaspace : 242029K->242029K(260096K)], 39.9805382 secs] [Temps : user=491.39 sys=4.10, real=39.98 secs]
2023-03-30T07:30:09.618+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20529006K(24681984K)] [ParOldGen : 57435482K->57435402K(57435648K)] 78081882K->77964408K(82117632K), [Metaspace : 242038K->242038K(260096K)], 31.3632706 secs] [Temps : user=382.46 sys=2.74, real=31.36 secs]
2023-03-30T07:30:41.012+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20535638K(24681984K)] [ParOldGen : 57435402K->57435345K(57435648K)] 78081802K->77970983K(82117632K), [Metaspace : 242053K->242053K(260096K)], 31.0060106 secs] [Temps : user=377.25 sys=2.72, real=31.00 secs]
2023-03-30T07:31:12.022+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20535719K(24681984K)] [ParOldGen : 57435345K->57435297K(57435648K)] 78081745K->77971016K(82117632K), [Metaspace : 242053K->242053K(260096K)], 31.1714473 secs] [Temps : user=380.42 sys=2.74, real=31.18 secs]
2023-03-30T07:31:43.215+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20536490K(24681984K)] [ParOldGen : 57435297K->57435275K(57435648K)] 78081697K->77971766K(82117632K), [Metaspace : 242061K->242061K(260096K)], 30.9676462 secs] [Temps : user=377.19 sys=2.88, real=30.96 secs]
2023-03-30T07:32:14.216+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20537679K(24681984K)] [ParOldGen : 57435275K->57435244K(57435648K)] 78081675K->77972923K(82117632K), [Metaspace : 242081K->242081K(260096K)], 31.2592798 secs] [Temps : user=379.77 sys=3.04, real=31.26 secs]
2023-03-30T07:32:45.532+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20518698K(24681984K)] [ParOldGen : 57435244K->57435465K(57435648K)] 78081644K->77954164K(82117632K), [Metaspace : 242123K->242123K(260096K)], 38.9523351 secs] [Temps : user=478.26 sys=4.04, real=38.95 secs]
2023-03-30T07:33:45.139+0000 : [GC complet (Ergonomie) [PSYoungGen : 20627835K->20519977K(24681984K)] [ParOldGen : 57435465K->57435334K(57435648K)] 78063301K->77955311K(82117632K), [Metaspace : 242185K->242185K(260096K)], 31.8680480 secs] [Temps : user=388.66 sys=2.88, real=31.87 secs]
2023-03-30T07:34:17.045+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20529987K(24681984K)] [ParOldGen : 57435334K->57435313K(57435648K)] 78081734K->77965301K(82117632K), [Metaspace : 242185K->242185K(260096K)], 30.6528436 secs] [Temps : user=370.84 sys=3.05, real=30.65 secs]
2023-03-30T07:35:08.312+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20552578K(24681984K)] [ParOldGen : 57435313K->57435312K(57435648K)] 78081713K->77987890K(82117632K), [Metaspace : 242202K->242202K(260096K)], 31.3030289 sec] [Temps : user=380.50 sys=2.90, real=31.30 secs]
2023-03-30T07:35:39.649+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20541558K(24681984K)] [ParOldGen : 57435312K->57435297K(57435648K)] 78081712K->77976855K(82117632K), [Metaspace : 242217K->242217K(260096K)], 31.4996226 secs] [Temps : user=384.32 sys=3.00, real=31.50 secs]
2023-03-30T07:36:11.199+0000 : [GC complet (Ergonomie) [PSYoungGen : 20646400K->20562436K(24681984K)] [ParOldGen : 57435297K->57435260K(57435648K)] 78081697K->77997697K(82117632K), [Metaspace : 242238K->242238K(260096K)], 31.1358920 secs] [Temps : user=378.46 sys=3.00, real=31.14 secs]
The "Garbage collection" log of a JVM is formatted as follows:
1. Each line represents a single garbage collection operation starting at the timestamp. 
2. The before and after sizes of different memory areas in the JVM are shown as  "MemoryArea : BeforeSize->AfterSize(AllocatedSize)" where MemoryArea is one of PSYoungGen, ParOldGen, or Metaspace. 
3. If the "MemoryArea:" is omitted, it represents the before and after size of the entire JVM's memory. 
4. Each line has the time taken for the operation in seconds. 

Summarize the following log and note any significant anomalies:
2023-03-30T07:00:19.800+0000: [GC (Allocation Failure) [PSYoungGen: 17197776K->2224032K(21782528K)] 64496630K->49524856K(79218176K), 3.2658630 secs] [Times: user=4.53 sys=0.00, real=3.27 secs] 
2023-03-30T07:01:06.553+0000: [GC (Allocation Failure) [PSYoungGen: 17471392K->2195300K(22969344K)] 64772216K->49530782K(80404992K), 3.3074224 secs] [Times: user=4.63 sys=0.00, real=3.30 secs] 
2023-03-30T07:01:56.129+0000: [GC (Allocation Failure) [PSYoungGen: 19045732K->2429792K(22598656K)] 66381214K->49767742K(80034304K), 3.5912859 secs] [Times: user=4.94 sys=0.00, real=3.59 secs] 
2023-03-30T07:02:46.034+0000: [GC (Allocation Failure) [PSYoungGen: 19280224K->2428421K(23520768K)] 66618174K->49768148K(80956416K), 3.6520001 secs] [Times: user=5.07 sys=0.03, real=3.65 secs] 
2023-03-30T07:03:39.130+0000: [GC (Allocation Failure) [PSYoungGen: 20488709K->2600800K(23257088K)] 67828436K->49943004K(80692736K), 3.8378192 secs] [Times: user=5.19 sys=0.00, real=3.84 secs] 
2023-03-30T07:04:31.634+0000: [GC (Allocation Failure) [PSYoungGen: 20661088K->2550592K(23885312K)] 68003292K->49894476K(81320960K), 3.7886199 secs] [Times: user=5.15 sys=0.00, real=3.78 secs] 
2023-03-30T07:05:28.784+0000: [GC (Allocation Failure) [PSYoungGen: 21416768K->2709510K(23698432K)] 68760652K->50055163K(81134080K), 3.9951697 secs] [Times: user=5.54 sys=0.00, real=3.99 secs] 
2023-03-30T07:06:24.857+0000: [GC (Allocation Failure) [PSYoungGen: 21575686K->2709696K(24113664K)] 68921339K->50058933K(81549312K), 4.0210395 secs] [Times: user=5.47 sys=0.01, real=4.02 secs] 
2023-03-30T07:07:21.991+0000: [GC (Allocation Failure) [PSYoungGen: 22106304K->2835749K(24000512K)] 69455541K->50186794K(81436160K), 4.0703042 secs] [Times: user=5.76 sys=0.00, real=4.06 secs] 
2023-03-30T07:08:18.668+0000: [GC (Allocation Failure) [PSYoungGen: 22232357K->2785312K(24265216K)] 69583402K->50204626K(81700864K), 4.1296625 secs] [Times: user=5.77 sys=0.00, real=4.13 secs] 
2023-03-30T07:09:16.891+0000: [GC (Allocation Failure) [PSYoungGen: 22510624K->2834405K(24177664K)] 69929938K->50255520K(81613312K), 4.2070487 secs] [Times: user=5.89 sys=0.01, real=4.21 secs] 
2023-03-30T07:10:15.553+0000: [GC (Allocation Failure) [PSYoungGen: 22559717K->2842896K(24403456K)] 69980832K->50266688K(81839104K), 4.2489383 secs] [Times: user=5.83 sys=0.02, real=4.24 secs] 
2023-03-30T07:11:15.412+0000: [GC (Allocation Failure) [PSYoungGen: 22863632K->2880069K(24334848K)] 70287424K->50306742K(81770496K), 4.2983311 secs] [Times: user=6.01 sys=0.00, real=4.29 secs] 
2023-03-30T07:12:17.330+0000: [GC (Allocation Failure) [PSYoungGen: 22900805K->2670097K(24596992K)] 70327478K->50099432K(82032640K), 3.9450690 secs] [Times: user=5.44 sys=0.00, real=3.95 secs] 
2023-03-30T07:13:15.713+0000: [GC (Allocation Failure) [PSYoungGen: 23009297K->2684375K(24459776K)] 70438632K->50115773K(81895424K), 3.9758416 secs] [Times: user=5.53 sys=0.00, real=3.97 secs] 
2023-03-30T07:14:12.939+0000: [GC (Allocation Failure) [PSYoungGen: 23023575K->2678912K(24829952K)] 70454973K->50113093K(82265600K), 3.9702778 secs] [Times: user=5.52 sys=0.00, real=3.97 secs] 
2023-03-30T07:15:12.343+0000: [GC (Allocation Failure) [PSYoungGen: 23508608K->2753575K(24717312K)] 70942789K->50189628K(82152960K), 4.0754481 secs] [Times: user=5.72 sys=0.00, real=4.08 secs] 
2023-03-30T07:16:13.026+0000: [GC (Allocation Failure) [PSYoungGen: 23583271K->2762097K(24974336K)] 71019324K->50201762K(82409984K), 4.1128461 secs] [Times: user=5.66 sys=0.00, real=4.11 secs] 
2023-03-30T07:17:14.129+0000: [GC (Allocation Failure) [PSYoungGen: 23924593K->2797957K(24905728K)] 71364258K->50239629K(82341376K), 4.1456776 secs] [Times: user=5.74 sys=0.01, real=4.15 secs] 
2023-03-30T07:18:14.857+0000: [GC (Allocation Failure) [PSYoungGen: 23960453K->2804721K(25075712K)] 71402125K->50249103K(82511360K), 4.1905285 secs] [Times: user=5.73 sys=0.01, real=4.19 secs] 
2023-03-30T07:19:15.979+0000: [GC (Allocation Failure) [PSYoungGen: 24189937K->3641846K(25027072K)] 71634319K->51171235K(82462720K), 3.6175882 secs] [Times: user=5.94 sys=0.00, real=3.62 secs] 
2023-03-30T07:22:24.484+0000: [GC (Allocation Failure) [PSYoungGen: 25027062K->3360979K(24336896K)] 72556451K->52269877K(81772544K), 0.4407322 secs] [Times: user=5.66 sys=0.00, real=0.44 secs] 
2023-03-30T07:22:38.974+0000: [GC (Allocation Failure) [PSYoungGen: 24007379K->4035567K(24681984K)] 72916277K->57145380K(82117632K), 0.8531910 secs] [Times: user=10.80 sys=0.23, real=0.85 secs] 
2023-03-30T07:22:52.666+0000: [GC (Allocation Failure) [PSYoungGen: 24677029K->24677029K(24681984K)] 77786841K->82112670K(82117632K), 7.3509182 secs] [Times: user=22.60 sys=11.27, real=7.35 secs] 
2023-03-30T07:23:00.017+0000: [Full GC (Ergonomics) [PSYoungGen: 24677029K->0K(24681984K)] [ParOldGen: 57435641K->57435322K(57435648K)] 82112670K->57435322K(82117632K), [Metaspace: 241941K->241941K(260096K)], 26.4487596 secs] [Times: user=313.82 sys=2.44, real=26.45 secs] 
2023-03-30T07:24:07.186+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->12427037K(24681984K)] [ParOldGen: 57435322K->57435609K(57435648K)] 78081722K->69862646K(82117632K), [Metaspace: 241947K->241947K(260096K)], 28.8675082 secs] [Times: user=350.97 sys=1.74, real=28.87 secs] 
2023-03-30T07:24:36.057+0000: [Full GC (System.gc()) [PSYoungGen: 12730000K->12427055K(24681984K)] [ParOldGen: 57435609K->57435556K(57435648K)] 70165609K->69862611K(82117632K), [Metaspace: 241947K->241947K(260096K)], 31.3736816 secs] [Times: user=379.38 sys=2.94, real=31.37 secs] 
2023-03-30T07:25:18.096+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->16985330K(24681984K)] [ParOldGen: 57435556K->57435308K(57435648K)] 78081956K->74420638K(82117632K), [Metaspace: 241999K->241999K(260096K)], 31.4762980 secs] [Times: user=363.38 sys=3.10, real=31.48 secs] 
2023-03-30T07:25:54.537+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->19116969K(24681984K)] [ParOldGen: 57435308K->57435152K(57435648K)] 78081708K->76552122K(82117632K), [Metaspace: 241999K->241999K(260096K)], 31.0418139 secs] [Times: user=377.34 sys=2.75, real=31.04 secs] 
2023-03-30T07:26:27.487+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->19955901K(24681984K)] [ParOldGen: 57435152K->57435290K(57435648K)] 78081552K->77391191K(82117632K), [Metaspace: 241999K->241999K(260096K)], 22.9475977 secs] [Times: user=280.80 sys=1.57, real=22.95 secs] 
2023-03-30T07:26:51.319+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20340549K(24681984K)] [ParOldGen: 57435290K->57435523K(57435648K)] 78081690K->77776072K(82117632K), [Metaspace: 242004K->242004K(260096K)], 37.2564843 secs] [Times: user=458.29 sys=3.35, real=37.26 secs] 
2023-03-30T07:27:28.892+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20465997K(24681984K)] [ParOldGen: 57435523K->57435230K(57435648K)] 78081923K->77901227K(82117632K), [Metaspace: 242007K->242007K(260096K)], 31.4213545 secs] [Times: user=382.65 sys=2.74, real=31.42 secs] 
2023-03-30T07:28:00.350+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20492397K(24681984K)] [ParOldGen: 57435230K->57435139K(57435648K)] 78081630K->77927536K(82117632K), [Metaspace: 242011K->242011K(260096K)], 17.3069966 secs] [Times: user=209.34 sys=0.45, real=17.31 secs] 
2023-03-30T07:28:17.694+0000: [Full GC (Ergonomics) [PSYoungGen: 20639999K->20482496K(24681984K)] [ParOldGen: 57435139K->57435581K(57435648K)] 78075138K->77918078K(82117632K), [Metaspace: 242023K->242023K(260096K)], 39.0253664 secs] [Times: user=478.37 sys=3.87, real=39.02 secs] 
2023-03-30T07:28:56.752+0000: [Full GC (Ergonomics) [PSYoungGen: 20629482K->20490559K(24681984K)] [ParOldGen: 57435581K->57435269K(57435648K)] 78065064K->77925828K(82117632K), [Metaspace: 242023K->242023K(260096K)], 32.7146380 secs] [Times: user=398.86 sys=2.93, real=32.71 secs]
2023-03-30T07:29:29.592+0000: [Full GC (Ergonomics) [PSYoungGen: 20627596K->20498740K(24681984K)] [ParOldGen: 57435269K->57435482K(57435648K)] 78062865K->77934223K(82117632K), [Metaspace: 242029K->242029K(260096K)], 39.9805382 secs] [Times: user=491.39 sys=4.10, real=39.98 secs] 
2023-03-30T07:30:09.618+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20529006K(24681984K)] [ParOldGen: 57435482K->57435402K(57435648K)] 78081882K->77964408K(82117632K), [Metaspace: 242038K->242038K(260096K)], 31.3632706 secs] [Times: user=382.46 sys=2.74, real=31.36 secs] 
2023-03-30T07:30:41.012+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20535638K(24681984K)] [ParOldGen: 57435402K->57435345K(57435648K)] 78081802K->77970983K(82117632K), [Metaspace: 242053K->242053K(260096K)], 31.0060106 secs] [Times: user=377.25 sys=2.72, real=31.00 secs] 
2023-03-30T07:31:12.022+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20535719K(24681984K)] [ParOldGen: 57435345K->57435297K(57435648K)] 78081745K->77971016K(82117632K), [Metaspace: 242053K->242053K(260096K)], 31.1714473 secs] [Times: user=380.42 sys=2.74, real=31.18 secs] 
2023-03-30T07:31:43.215+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20536490K(24681984K)] [ParOldGen: 57435297K->57435275K(57435648K)] 78081697K->77971766K(82117632K), [Metaspace: 242061K->242061K(260096K)], 30.9676462 secs] [Times: user=377.19 sys=2.88, real=30.96 secs] 
2023-03-30T07:32:14.216+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20537679K(24681984K)] [ParOldGen: 57435275K->57435244K(57435648K)] 78081675K->77972923K(82117632K), [Metaspace: 242081K->242081K(260096K)], 31.2592798 secs] [Times: user=379.77 sys=3.04, real=31.26 secs] 
2023-03-30T07:32:45.532+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20518698K(24681984K)] [ParOldGen: 57435244K->57435465K(57435648K)] 78081644K->77954164K(82117632K), [Metaspace: 242123K->242123K(260096K)], 38.9523351 secs] [Times: user=478.26 sys=4.04, real=38.95 secs] 
2023-03-30T07:33:45.139+0000: [Full GC (Ergonomics) [PSYoungGen: 20627835K->20519977K(24681984K)] [ParOldGen: 57435465K->57435334K(57435648K)] 78063301K->77955311K(82117632K), [Metaspace: 242185K->242185K(260096K)], 31.8680480 secs] [Times: user=388.66 sys=2.88, real=31.87 secs] 
2023-03-30T07:34:17.045+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20529987K(24681984K)] [ParOldGen: 57435334K->57435313K(57435648K)] 78081734K->77965301K(82117632K), [Metaspace: 242185K->242185K(260096K)], 30.6528436 secs] [Times: user=370.84 sys=3.05, real=30.65 secs] 
2023-03-30T07:35:08.312+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20552578K(24681984K)] [ParOldGen: 57435313K->57435312K(57435648K)] 78081713K->77987890K(82117632K), [Metaspace: 242202K->242202K(260096K)], 31.3030289 secs] [Times: user=380.50 sys=2.90, real=31.30 secs] 
2023-03-30T07:35:39.649+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20541558K(24681984K)] [ParOldGen: 57435312K->57435297K(57435648K)] 78081712K->77976855K(82117632K), [Metaspace: 242217K->242217K(260096K)], 31.4996226 secs] [Times: user=384.32 sys=3.00, real=31.50 secs] 
2023-03-30T07:36:11.199+0000: [Full GC (Ergonomics) [PSYoungGen: 20646400K->20562436K(24681984K)] [ParOldGen: 57435297K->57435260K(57435648K)] 78081697K->77997697K(82117632K), [Metaspace: 242238K->242238K(260096K)], 31.1358920 secs] [Times: user=378.46 sys=3.00, real=31.14 secs]
1. The log has 47 GC operations over a 36-minute interval from 7:00 AM to 7:36 AM on 30th March 2023 UTC. 
2. The GC operations start at roughly one per minute and take less than five seconds each, but after 7:23 AM, they abruptly take about 30 seconds each and occur twice a minute. In other words, initially, GC operations take up a small fraction of the JVM time, while later, they take up almost all of its time.
3. GC operations in this second period result in a very slight decrease in the total memory size and the PSYoungGen, ParOldGen, and Metaspace memory areas. This behavior is especially acute after 7:26:51 AM.
4. This indicates much time spent in GC operations with little result.
5. The total memory size initially slowly grows from 49.5GB to 52.3 GB, but in the second period maxes out at around 78 GB. 
6. The allocated memory size is fixed at 82 GB during the second period of GC operations, indicating an outer limit.
7. I recommend increasing the maximum allocated memory beyond the 82 GB limit, doubling it if possible, and re-running the JVM.
1. Le journal comporte 47 opérations GC sur un intervalle de 36 minutes entre 7h00 et 7h36 le 30 mars 2023 UTC.
2. Les opérations GC commencent à un rythme d'environ une par minute et prennent moins de cinq secondes chacune, mais après 7:23 AM, elles prennent brusquement environ 30 secondes chacune et se produisent deux fois par minute. En d'autres termes, au début, les opérations de GC n'occupent qu'une petite fraction du temps de la JVM, alors que plus tard, elles en occupent la quasi-totalité.
3. Les opérations de GC au cours de cette deuxième période entraînent une très légère diminution de la taille totale de la mémoire et des zones de mémoire PSYoungGen, ParOldGen et Metaspace. Ce comportement est particulièrement marqué après 7:26:51 AM.
4. Cela indique que beaucoup de temps a été consacré aux opérations de GC avec peu de résultats.
5. La taille totale de la mémoire augmente d'abord lentement de 49,5 Go à 52,3 Go, mais dans la deuxième période, elle atteint un maximum d'environ 78 Go.
6. La taille de la mémoire allouée est fixée à 82 Go au cours de la deuxième période d'opérations GC, ce qui indique une limite extérieure.
7. Je recommande d'augmenter la mémoire allouée maximale au-delà de la limite de 82 Go, de la doubler si possible, et de réexécuter la JVM.
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