Hi,
I have tried by increasing the value of buckets to 4,997,120 for 10M DB ,
but I still see VPP RSZ memory is keep on growing even after 24 hours of
test. Please provide suggestions
Hash table 'v4_flow_hash'
* 10789283 active elements 6244300 active buckets*
7 free lists
[len 2] 230496 free elts
[len 16] 2 free elts
12223 linear search buckets
* heap: 7286 chunk(s) allocated*
bytes: used *1.48g*, scrap 400.81k
After 12 hours
Hash table 'v4_flow_hash'^M
* 10882016 active elements 6268886 active buckets*
7 free lists^M
[len 2] 917835 free elts
[len 4] 52 free elts
[len 8] 3 free elts
* 15488 linear search buckets*
heap: 10779 chunk(s) allocated
bytes: used *1.79g,* scrap 802.44k
Thanks,
Chetan
On Thu, Apr 7, 2022 at 5:38 PM <[email protected]> wrote:
> Not enough buckets for the number of active key/value pairs. Buckets are
> cheap. Start with nBuckets = nActiveSessions / (BIHASH_KVP_PER_PAGE / 2) or
> some such and increase the number of buckets as necessary...
>
>
>
> HTH... Dave
>
>
>
> *From:* [email protected] <[email protected]> *On Behalf Of *chetan
> bhasin
> *Sent:* Thursday, April 7, 2022 7:28 AM
> *To:* vpp-dev <[email protected]>
> *Subject:* [vpp-dev] Query Regarding Bihash (VPP 2106)
>
>
>
> Hi,
>
>
>
> We are using bihash where key is 5 tuple of the packet. There are
> different type of free list which are maintained and once an entry is
> allocated and removed from a bihash that memory still remain with the
> bihash for future usage.
>
>
>
> The problem we are seeing is consistent growth in the memory of bihash
> even after 24 hours of traffic , somehow memory is not coming in a stable
> situation.
>
>
>
> Any suggestions here are really appreciated.
>
>
>
>
>
> With 5 tuple and less buckets
>
> Hash table 'abc_v4_flow_hash'
>
> 5260666 active elements 131072 active buckets
>
> 11 free lists
>
> * [len 2] 50214 free elts*
>
> * [len 4] 58542 free elts*
>
> * [len 8] 69288 free elts*
>
> * [len 16] 74395 free elts*
>
> * [len 32] 77187 free elts*
>
> * [len 64] 53558 free elts*
>
> * [len 128] 1 free elts*
>
> 1788 linear search buckets
>
> heap: 25363 chunk(s) allocated
>
> bytes: used 2.33g, scrap 48.84m
>
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