How to detect slab memory leak

Mulyadi Santosa mulyadi.santosa at
Tue Dec 18 02:42:13 EST 2018

On Sun, Dec 16, 2018 at 1:25 PM Naruto Nguyen <narutonguyen2018 at>

> Hi everyone,
> When using slabtop to display the cache size growing, I see that
> kmalloc-1024 and kmalloc-256 are increasing about 200MB after 1 hour.
> Is there any way to detect which kernel components cause this slab
> increase?
> Thanks a lot,
> Brs,
> Naruto
Hello Naruto

I think you can do it by instrumenting call to kmalloc(). These days, eBPF
is the hot stuff to try for this matter. See if it fits yours too.



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Mulyadi Santosa
Freelance Linux trainer and consultant

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