Revision a365c55931004630064261aed22e96c1910637a4 authored by Marge Bot on 05 February 2024, 08:58:04 UTC, committed by Marge Bot on 05 February 2024, 08:58:04 UTC
Co-authored-by: pecornilleau <pe.cornilleau@marigold.dev> Approved-by: Pierrick Couderc <pierrick.couderc@nomadic-labs.com> Approved-by: Emma Turner <1623821-emturner@users.noreply.gitlab.com> See merge request https://gitlab.com/tezos/tezos/-/merge_requests/11815
constants.ml
(*****************************************************************************)
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(* Open Source License *)
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(* FIXME: https://gitlab.com/tezos/tezos/-/issues/4458
Better handling of this limitation. *)
let shards_store_lru_size =
(* The size of the LRU is determined by the number of slots we remember in the
cache. Each entry in the cache maintains two open file descriptors (one via
regular file opening and one via mmap on the bitset region). Note that setting
a too high value causes a "Too many open files" error. *)
let irmin_internals_entries_per_toplevel_entry = 3 in
let number_of_slots = 256 in
let number_of_remembered_levels = 1 in
irmin_internals_entries_per_toplevel_entry * number_of_slots
* number_of_remembered_levels
(* Fewer cache sizes should be enough in practice,
but we cache 50 since each cache entry has quite a small memory footprint. *)
let committee_cache_size = 50
(* The size of the cache of 1024 entries (one per slot) is chosen such
that: if a DAL node stores the shard proofs of 128 slots per level,
the cache will be able to store the proofs for 8 levels, which
should be quite sufficient with the current attestation lag.
A shard proof takes 52 bytes with the current encoding (could be improved
to 48), so the maximum memory footprint of the cache is dominated by (keys
size is negligible):
1024 (cache size) * 2048 (shards per slot) * 52 bytes = 109 mb *)
let shards_proofs_cache_size = 1024
let shards_verification_sampling_frequency = 100
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