Hoi Matt,
Out of curiosity how large is your heap and stats segment? I ask because
running VPP with a large FIB I needed 2G heap size (and I used page size of
2M), and 96M of statsseg:
memory {
main-heap-size 3G
main-heap-page-size 2M
}
statseg {
socket-name /run/vpp/stats.sock
size 96M
per-node-counters off
}
On Mon, Jun 28, 2021 at 11:53 PM Matthew Smith via lists.fd.io <mgsmith=
netgate....@lists.fd.io> wrote:
> Hi all,
>
> It's my understanding that when you set the size of the main heap or the
> stat segment in startup.conf, the size you specify is used to set up
> virtual address space and the system does not actually allocate that full
> amount of memory to VPP. I think when VPP tries to read/write addresses
> within the address space, then memory is requested from the system to back
> the chunk of address space containing the address being accessed. Is my
> understanding correct(ish)?
>
> When I add a large number of routes to the FIB (>1M), I have seen VPP
> crash when the main heap or stats segment run out of space. I am wondering
> if it makes sense to just set the heap sizes to some huge value that I am
> confident will not be exceeded. If memory is not allocated unless it's
> needed, it seems like that would be ok to do.
>
> Thanks,
> -Matt
>
>
>
>
>
>
--
Pim van Pelt <p...@ipng.nl>
PBVP1-RIPE - http://www.ipng.nl/
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