`trace-cmd-mem` ( 1 )

показать использование памяти определенными событиями kmem (show memory usage of certain kmem events)

Формат

Имя (Name)

trace-cmd-mem - show memory usage of certain kmem events

Синопсис (Synopsis)

trace-cmd mem [OPTIONS][input-file]

Описание (Description)

The trace-cmd(1) mem requires a trace-cmd record that enabled the following events:

kmalloc kmalloc_node kfree kmem_cache_alloc kmem_cache_alloc_node kmem_cache_alloc_free

It then reads the amount requested and the ammount freed as well as the functions that called the allocation. It then reports the final amount of bytes requested and allocated, along with the total amount allocated and requested, as well as the max allocation and requested during the run. It reports the amount of wasted bytes (allocated - requested) that was not freed, as well as the max wasted amount during the run. The list is sorted by descending order of wasted bytes after the run.

Function Waste Alloc req TotAlloc TotReq MaxAlloc MaxReq MaxWaste -------- ----- ----- --- -------- ------ -------- ------ -------- rb_allocate_cpu_buffer 768 2304 1536 2304 1536 2304 1536 768 alloc_pipe_info 400 1152 752 1152 752 1152 752 400 instance_mkdir 252 544 292 544 292 544 292 252 __d_alloc 215 1086560 1086345 1087208 1086993 1086560 1086345 215 get_empty_filp 72 2304 2232 4864 4712 4864 4712 152 mm_alloc 40 960 920 960 920 960 920 40 prepare_creds 32 192 160 1728 1440 1728 1440 288 tracing_buffers_open 8 32 24 32 24 32 24 8 do_brk 0 0 0 368 368 368 368 0 journal_add_journal_head 0 6048 6048 6048 6048 6048 6048 0 journal_start 0 0 0 1224 1224 48 48 0 __rb_allocate_pages 0 3289856 3289856 3289856 3289856 3289856 3289856 0 anon_vma_alloc 0 0 0 936 936 864 864 0 [...]

Параметры (Options)

-i input-file
           By default, trace-cmd hist will read the file trace.dat. But
           the -i option open up the given input-file instead. Note, the
           input file may also be specified as the last item on the
           command line.

Смотри также (See also)

trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-hist(1), trace-cmd-split(1), trace-cmd-listen(1)