[llvm-dev] Hitting kMaxNumChunks

[Frederik Deweerdt via llvm-dev]

On Wed, Jan 24, 2018 at 11:30 AM, Kostya Serebryany <kcc at google.com> wrote:
> +Aleksey, who has been dealing with the allocator recently.
>
> If you have a "((idx)) < ((kMaxNumChunks))" (0x40000, 0x40000)
> check failure, it means that you've allocated (and did not deallocate) 2^18
> large heap regions, each *at least* (2^17+1) bytes.
> This means, that you have live large heap chunks of 2^35 bytes (or more) in
> total, which is 32Gb.
> Does this sound correct?
Yes, it does. Our software typically allocates several hundred Gb, and
the size of the objects depend on the traffic. They would
realistically reach 2^17+1 bytes.

> If yes, yea, I guess we need to bump kMaxNumChunks
>
>
I'll increase the limit to 2^19 for our build, and I'll report the results here.

Thanks,
Frederik