7.6.6 -XX:[+|-]HitachiVerboseGCPrintDate

-XX:[+|-]HitachiVerboseGCPrintDate outputs the GC start date and time to the extended verbosegc information.

Description

-XX:[+|-]HitachiVerboseGCPrintDate specifies whether the GC start date and time are to be output to the extended verbosegc information.

Prerequisite option

-XX:+HitachiVerboseGC

Syntax

-XX:[+|-]HitachiVerboseGCPrintDate

Specifiable values

Type: String

-XX:+HitachiVerboseGCPrintDate: Outputs the GC start date and time at the beginning of each output line in the extended verbosegc information.
-XX:-HitachiVerboseGCPrintDate: Does not output the GC start date and time at the beginning of each output line in the extended verbosegc information.

Default value

If the definition item is omitted:: -XX:+HitachiVerboseGCPrintDate

Examples

Example 1 (if SerialGC is selected when the -XX:+HitachiVerboseGC option is selected)

[VGC]<Thu Oct 02 10:38:53.658 2014>(Skip Full:1,Copy:0)
[Full GC 770K->682K(8064K), 0.0050003 secs][DefNew::Eden: 88K->0K(2304K)]
[DefNew::Survivor: 0K->0K(256K)][Tenured: 681K->682K(5504K)] 
[Metaspace: 3634K(4492K, 4492K)->3634K(4492K, 4492K)]
[class space: 356K(388K, 388K)->356K(388K, 388K)] 
[cause:System.gc][User: 0.0000000 secs][Sys: 0.0000000 secs]
[IM: 11944K, 12448K, 0K][TC: 22][DOE: 0K, 0][CCI: 1173K, 245760K, 2496K]

Example 2 (if G1GC is selected when the -XX:+HitachiVerboseGC option is selected)

GC-related log

[VG1]<Thu Oct 02 10:38:56.193 2014>
[Full GC 753K/2048K(8192K)->678K/1024K(8192K), 0.0097901 secs][Status:-]
[G1GC::Eden: 1024K(2048K)->0K(2048K)][G1GC::Survivor: 0K->0K]
[G1GC::Tenured: 1024K->1024K][G1GC::Humongous: 0K->0K]
[G1GC::Free: 6144K->7168K] [Metaspace: 3634K(4492K, 4492K)->3634K(4492K, 4492K)]
[class space: 356K(388K, 388K)->356K(388K, 388K)] [cause:System.gc]
[RegionSize: 1024K][Target: 0.2000000 secs][Predicted: 0.0000000 secs]
[TargetTenured: 0K][Reclaimable: 0K(0.00%)][User: 0.0000000 secs]
[Sys: 0.0000000 secs][IM: 20459K, 21920K, 0K][TC: 35][DOE: 0K, 0]
[CCI: 1172K, 245760K, 2496K]

Concurrent Marking related log

[VCM]<Wed Jul 24 11:45:20 2013>[Concurrent Root Region Scan Start]
[User: 0.0000000 secs][Sys: 0.0000000 secs]
[VCM]<Wed Jul 24 11:45:20 2013>[Concurrent Root Region Scan End]
[User: 0.0126134 secs][Sys: 0.0146961 secs]
[VCM]<Wed Jul 24 11:45:20 2013>[Concurrent Mark Start][User: 0.0000000 secs]
[Sys: 0.0000000 secs]
[VCM]<Wed Jul 24 11:45:34 2013>[Concurrent Mark End][User: 0.0156250 secs]
[Sys: 0.2495800 secs]

Example 3 (if SerialGC is selected when the -XX:+HitachiCommaVerboseGC option is selected)

VGC,Thu Oct 02 10:38:52.442 2014,1,0,0,Full GC,770,682,8064,0.0040002,88,0,2304,
0,0,256,681,682,5504,3634,3634,4492,3634,3634,4492,356,356,388,356,356,388,1,0.
0000000,0.0000000,11913,12448,0,22,0,0,1173,245760,2496

Example 4 (if G1GC is selected when the -XX:+HitachiCommaVerboseGC option is selected)

GC-related log

VG1,Thu Oct 02 10:38:54.920 2014,Full GC,753,2048,8192,678,1024,8192,0.0064767,
-,1024,2048,0,2048,0,0,1024,1024,0,0,6144,7168,3634,3634,4492,3634,3634,4492,
356,356,388,356,356,388,1,1024,0.2000000,0.0000000,0,0,0.00,0.0000000,
0.0000000,20459,21920,0,35,0,0,1171,245760,2496

Concurrent Marking related log

VCM,Fri Jul 26 21:35:50 2013,Concurrent Mark Start,0.0000000,0.0000000
VCM,Fri Jul 26 21:35:50 2013,Concurrent Mark End,0.0124532,0.0245698

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