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common/node_id: new type.

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Node ids are pubkeys, but we only use them as pubkeys for routing and checking
gossip messages.  So we're packing and unpacking them constantly, and wasting
some space and time.

This introduces a new type, explicitly the SEC1 compressed encoding
(33 bytes).  We ensure its validity when we load from the db, or get it
from JSON.  We still use 'struct pubkey' for peer messages, which checks
validity.

Results from 5 runs, min-max(mean +/- stddev):
	store_load_msec,vsz_kb,store_rewrite_sec,listnodes_sec,listchannels_sec,routing_sec,peer_write_all_sec
	39475-39572(39518+/-36),2880732,41.150000-41.390000(41.298+/-0.085),2.260000-2.550000(2.336+/-0.11),44.390000-65.150000(58.648+/-7.5),32.740000-33.020000(32.89+/-0.093),44.130000-45.090000(44.566+/-0.32)

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2019-04-08 16:04:06 +09:30
committed by neil saitug
parent 837a095d68
commit b4455d517c
21 changed files with 252 additions and 0 deletions
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1
devtools/print_wire.c
View File

@@ -175,6 +175,7 @@ void printwire_u8_array(const char *fieldname, const u8 **cursor, size_t *plen,
PRINTWIRE_STRUCT_TYPE_TO_STRING(bitcoin_blkid);
PRINTWIRE_STRUCT_TYPE_TO_STRING(bitcoin_txid);
PRINTWIRE_STRUCT_TYPE_TO_STRING(channel_id);
PRINTWIRE_STRUCT_TYPE_TO_STRING(node_id);
PRINTWIRE_STRUCT_TYPE_TO_STRING(preimage);
PRINTWIRE_STRUCT_TYPE_TO_STRING(pubkey);
PRINTWIRE_STRUCT_TYPE_TO_STRING(sha256);

1
devtools/print_wire.h
View File

@@ -18,6 +18,7 @@ void printwire_amount_sat(const char *fieldname, const struct amount_sat *sat);
void printwire_amount_msat(const char *fieldname, const struct amount_msat *msat);
void printwire_preimage(const char *fieldname, const struct preimage *preimage);
void printwire_pubkey(const char *fieldname, const struct pubkey *pubkey);
void printwire_node_id(const char *fieldname, const struct node_id *id);
void printwire_secp256k1_ecdsa_signature(const char *fieldname, const secp256k1_ecdsa_signature *);
void printwire_sha256(const char *fieldname, const struct sha256 *sha256);
void printwire_secret(const char *fieldname, const struct secret *secret);