55G total heap
15G old
40G young
survival ratio 3: 24G + 8G + 8G
time in young gc: 55.97 secs + 1 cms

java -Xms55g -Xmx55g 
-verbose:gc 
-XX:+PrintGCDetails 
-XX:+PrintGCTimeStamps 
-Xloggc:gc.txt 
-XX:+PrintTenuringDistribution 
-XX:+UseConcMarkSweepGC 
-Xmn40g 
-XX:SurvivorRatio=3 
-XX:MaxTenuringThreshold=3 
-XX:+DoEscapeAnalysis


116.010: [Full GC 116.011: [CMS: 0K->607928K(15728640K), 3.2822220 secs] 12582917K->607928K(49283072K), [CMS Perm : 21247K->21205K(21248K)], 3.2825220 secs] [Times: user=2.61 sys=0.69, real=3.28 secs] 
227.471: [Full GC 227.471: [CMS: 607928K->1304170K(15728640K), 6.3393140 secs] 12699266K->1304170K(49283072K), [CMS Perm : 35278K->35242K(35344K)], 6.3396030 secs] [Times: user=5.80 sys=0.53, real=6.34 secs] 
445.734: [GC 445.734: [ParNew
Desired survivor size 4294967296 bytes, new threshold 3 (max 3)
- age   1: 1800888944 bytes, 1800888944 total
: 25165824K->1766929K(33554432K), 1.4276600 secs] 26469994K->3071099K(49283072K), 1.4277820 secs] [Times: user=7.62 sys=3.31, real=1.43 secs] 
459.362: [GC 459.362: [ParNew
Desired survivor size 4294967296 bytes, new threshold 3 (max 3)
- age   1: 2484694520 bytes, 2484694520 total
- age   2: 1464773000 bytes, 3949467520 total
: 26932753K->4568559K(33554432K), 2.6191320 secs] 28236923K->5872729K(49283072K), 2.6192550 secs] [Times: user=13.98 sys=6.92, real=2.62 secs] 
478.839: [GC 478.840: [ParNew
Desired survivor size 4294967296 bytes, new threshold 2 (max 3)
- age   1: 2768769608 bytes, 2768769608 total
- age   2: 1820563056 bytes, 4589332664 total
- age   3: 1451794728 bytes, 6041127392 total
: 29734383K->7673773K(33554432K), 3.6770240 secs] 31038553K->8977943K(49283072K), 3.6771510 secs] [Times: user=21.85 sys=7.51, real=3.69 secs] 
608.091: [GC 608.091: [ParNew
Desired survivor size 4294967296 bytes, new threshold 2 (max 3)
- age   1: 1651399512 bytes, 1651399512 total
- age   2: 2748840456 bytes, 4400239968 total
: 32839597K->7194553K(33554432K), 21.3476970 secs] 34143767K->12167409K(49283072K), 21.3480080 secs] [Times: user=32.77 sys=12.47, real=21.35 secs] 
964.352: [GC 964.352: [ParNew
Desired survivor size 4294967296 bytes, new threshold 2 (max 3)
- age   1: 3116869128 bytes, 3116869128 total
- age   2: 1314986440 bytes, 4431855568 total
: 32360377K->5839014K(33554432K), 17.4598830 secs] 37333233K->13498681K(49283072K), 17.4600560 secs] [Times: user=31.77 sys=12.16, real=17.46 secs] 
1131.112: [GC 1131.112: [ParNew
Desired survivor size 4294967296 bytes, new threshold 3 (max 3)
- age   1:  144838040 bytes,  144838040 total
- age   2: 3116725200 bytes, 3261563240 total
: 31004838K->5964182K(33554432K), 9.4337940 secs] 38664505K->14906425K(49283072K), 9.4339450 secs] [Times: user=20.00 sys=9.98, real=9.43 secs] 
1140.631: [GC [1 CMS-initial-mark: 8942242K(15728640K)] 15354063K(49283072K), 1.6537230 secs] [Times: user=1.65 sys=0.00, real=1.65 secs] 
1142.285: [CMS-concurrent-mark-start]
1152.826: [CMS-concurrent-mark: 10.389/10.541 secs] [Times: user=27.56 sys=0.15, real=10.54 secs] 
1152.826: [CMS-concurrent-preclean-start]
1152.876: [CMS-concurrent-preclean: 0.048/0.050 secs] [Times: user=0.05 sys=0.00, real=0.05 secs] 
1152.876: [CMS-concurrent-abortable-preclean-start]
 CMS: abort preclean due to time 1158.236: [CMS-concurrent-abortable-preclean: 5.336/5.360 secs] [Times: user=7.39 sys=0.05, real=5.36 secs] 
1158.249: [GC[YG occupancy: 11393607 K (33554432 K)]1158.250: [Rescan (parallel) , 3.5832850 secs]1161.833: [weak refs processing, 0.0002210 secs] [1 CMS-remark: 8942242K(15728640K)] 20335850K(49283072K), 3.5836630 secs] [Times: user=6.39 sys=0.18, real=3.58 secs] 
1161.836: [CMS-concurrent-sweep-start]
1168.014: [CMS-concurrent-sweep: 6.153/6.178 secs] [Times: user=9.74 sys=0.06, real=6.18 secs] 
1168.014: [CMS-concurrent-reset-start]
1168.190: [CMS-concurrent-reset: 0.163/0.176 secs] [Times: user=0.61 sys=0.02, real=0.18 secs] 
