-XX:+HitachiCommaVerboseGC

This option outputs the extended verbosegc information in the comma format so that the output can be obtained in a CSV file.

Delete all brackets (parenthesis (), square brackets [], angle brackets <>) and colons (:), and output the comma-delimited numeric values or character strings (,).

-XX:-HitachiCommaVerboseGC

This option outputs the extended verbosegc information in the normal format.

Specify whether to output the extended verbosegc information in CSV format.

Default value

• -XX:-HitachiCommaVerboseGC

Prerequisite options

• -XX:+HitachiVerboseGC

The following are the output contents when the -XX:-HitachiVerboseGCIntervalTime option is specified:

id, date, full_count, copy_count, inc_count, gc_kind, gc_info, gc_time, eden_info, survivor_info,tenured_info, perm_info, cause_info, user_cpu, system_cpu, jvm_alloc_size, mmap_total_size, malloc_total_size, thread_count, doe_alloc_size, called_count, cc_used_size, cc_max_size, cc_info

id

Indicates the identifier for JavaVM log file.

date

Indicates the date and time for starting garbage collection. When the -XX:-HitachiVerboseGCPrintDate option is specified, the date is not output.

full_count

Indicates the number of times the output of full GC information is skipped.

This is output when the -XX:HitachiVerboseGCIntervalTime option is specified.

copy_count

Indicates the number of times the output of copy GC information is skipped.

This is output when the -XX:HitachiVerboseGCIntervalTime option is specified.

inc_count

0 is displayed.

This is output when the -XX:HitachiVerboseGCIntervalTime option is specified.

gc_kind

Indicates the garbage collection type. "FullGC" or "GC" is output.

gc_info

Indicates the garbage collection information. The information is output in the following format. The unit is kilobyte.

area-length-before-the-garbage-collection,area-length-after-the-garbage-collection,area-size

gc_time

Indicates the elapsed time for garbage collection. The unit is in seconds.

eden_info

Indicates the Eden information. The information is output in the following format: The unit is in kilobytes.

area-length-before-the-garbage-collection,area-length-after-the-garbage-collection,area-size

survivor_info

Indicates the Survivor information. The information is output in the following format: The unit is in kilobytes.

area-length-before-the-garbage-collection,area-length-after-the-garbage-collection,(area-size)

tenured_info

Indicates the Tenured information. The information is output in the following format: The unit is in kilobytes.

area-length-before-the-garbage-collection,area-length-after-the-garbage-collection,(area-size)

perm_info

Indicates the Perm information. The information is output in the following format: The unit is in kilobytes.

area-length-before-the-garbage-collection,area-length-after-the-garbage-collection,area-size

cause_info

Indicates the cause number of garbage collection.

When the -XX:-HitachiVerboseGCPrintCause option is specified, this information is not output.

For the garbage collection cause number, see -XX:[+|-]HitachiVerboseGCPrintCause (Option to output the cause of garbage collection).

user_cpu

Indicates the CPU time that the garbage collection thread has consumed in the user mode. The unit is in seconds.

If the -XX:+UseParNewGC option is specified, user_cpu becomes the total CPU time spent in the user mode by all the garbage collection threads.

If fails to obtain the CPU time, unknown is displayed.

When the -XX:-HitachiVerboseGCCpuTime option is specified, the information is not output.

system_cpu

Indicates the CPU time that the garbage collection thread has consumed in the kernel mode. The unit is in seconds.

If the -XX:+UseParNewGC option is specified, system_cpu becomes the total CPU time spent by all the garbage collection threads in the kernel mode.

If fails to obtain the CPU time, unknown is displayed.

When the -XX:-HitachiVerboseGCCpuTime option is specified, the information is not output.

jvm_alloc_size

Specifies the size of the area currently in use, from the areas being managed in JavaVM (size of the area currently in use, from the total size of mmap_total_size and malloc_total_size). The unit is in kilobytes.

When the -XX:-HitachiVerboseGCPrintJVMInternalMemory option is specified, this information is not output.

mmap_total_size

Specifies the total C heap size allocated for mmap (VirtualAlloc in Windows), from the areas being managed in JavaVM. The unit is in kilobytes.

When the -XX:-HitachiVerboseGCPrintJVMInternalMemory option is specified, this information is not output.

malloc_total_size

Specifies the total C heap size allocated for malloc, from the areas being managed in JavaVM. The unit is in kilobytes.

When the -XX:-HitachiVerboseGCPrintJVMInternalMemory option is specified, this information is not output.

thread_count

Specifies the number of Java threads.

When the -XX:-HitachiVerboseGCPrintThreadCount option is specified, this information is not output.

doe_alloc_size

Specifies the cumulative heap size allocated by invoking the java.io.File.deleteOnExit()method. The unit is in kilobytes.

When the -XX:-HitachiVerboseGCPrintDeleteOnExit option is specified, this information is not output.

called_count

Specifies the invocation count of the java.io.File.deleteOnExit() method.

When the -XX:-HitachiVerboseGCPrintDeleteOnExit option is specified, this information is not output.

cc_used_size

Specifies the size of the code cache area used when the garbage collection occurs. The unit is kilobyte.

When the -XX:-PrintCodeCacheInfo option is specified, this information is not output.

cc_max_size

Specifies the maximum size of the code cache area. The unit is kilobyte.

When the -XX:-PrintCodeCacheInfo option is specified, this information is not output.

cc_info

Specifies the maintenance information.

When the -XX:-PrintCodeCacheInfo option is specified, this information is not output.

The following are the output contents when the -XX:+HitachiVerboseGCPrintTenuringDistribution option is specified:

id, date, size, value, max_value, total_age1, total_age2, total_agen

For output contents, see -XX:[+|-]HitachiVerboseGCPrintTenuringDistribution (Option to output the tenuring distribution for the Survivor area).

• When -XX:HitachiVerboseGCIntervalTime option is specified
  

  VGC,Fri Jan 23 21:37:50 2004,11,41,0,GC,16886,16886,65088,0.0559806, 4094,0,4096,447,447,448,12345,16439,60544,1116,1116,4096,0,0.0312500, 0.0156250,729,928,0,509,2167,2054,2301,49152,2304 VGC,Fri Jan 23 21:37:55 2004,6,24,0,Full GC,65082,65082,65088,0.4294532, 4094,4094,4096,447,447,448,60541,60541,60544,1116,1116,4096,0,0.0156250, 0.0312500,729,928,0,509,16,170,2301,49152,2304 ...

• When -XX:+HitachiVerboseGCPrintTenuringDistribution option is specified
  

  PTD,Wed May 28 11:45:23 2008,5467547,30,31,1357527,1539661