interpretation of malloc_stats_print() output

[Mayank Kumar (mayankum)]

Hi All
I am trying to match output from malloc_stats with output from top and also trying to figure out total process virtual memory usage from stats.

What fields in the stats should be added to get the total virtual memory for my process ?

Also is this link an accurate measurement of fragmentation for my process?
http://jemalloc.net/mailman/jemalloc-discuss/2014-April/000766.html

from the link it seems active should be less than allocated, but I see otherwise. Is there a documentation somewhere to decipher this interesting output from jemalloc stats ?


CPUs: 2
Arenas: 8
Pointer size: 4
Quantum size: 16
Page size: 4096
Min active:dirty page ratio per arena: 8:1
Maximum thread-cached size class: 32768
Chunk size: 4194304 (2^22)
Allocated: 251363184, active: 270594048, mapped: 415236096
Current active ceiling: 1488977920
chunks: nchunks   highchunks    curchunks
            100           99           99
huge: nmalloc      ndalloc    allocated
            0            0            0

Merged arenas stats:
assigned threads: 21
dss allocation precedence: N/A
dirty pages: 66063:6587 active:dirty, 295 sweeps, 7009 madvises, 94136 purged
            allocated      nmalloc      ndalloc    nrequests
small:      176254832      8893481      6427006     22584955
large:       75108352         4791         2711         8062
total:      251363184      8898272      6429717     22593017
active:     270594048
mapped:     411041792
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