system
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user
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]


assistant
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.