config: add configuration for solana labs poh core

firedancer-io · Dec 8, 2023 · 753ba6b · 753ba6b
1 parent ba88bc4
commit 753ba6b
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Showing 4 changed files with 9 additions and 0 deletions.
diff --git a/src/app/fdctl/config.c b/src/app/fdctl/config.c
@@ -200,6 +200,7 @@ static int parse_key_value( config_t *   config,
   ENTRY_STR   ( ., snapshots,           path                                                      );
 
   ENTRY_STR   ( ., layout,              affinity                                                  );
+  ENTRY_UINT  ( ., layout,              poh_core                                                  );
   ENTRY_UINT  ( ., layout,              net_tile_count                                            );
   ENTRY_UINT  ( ., layout,              verify_tile_count                                         );
   ENTRY_UINT  ( ., layout,              bank_tile_count                                           );

diff --git a/src/app/fdctl/config.h b/src/app/fdctl/config.h
@@ -117,6 +117,7 @@ typedef struct {
 
   struct {
     char affinity[ AFFINITY_SZ ];
+    uint poh_core;
     uint net_tile_count;
     uint verify_tile_count;
     uint bank_tile_count;

diff --git a/src/app/fdctl/config/default.toml b/src/app/fdctl/config/default.toml
@@ -498,6 +498,11 @@ dynamic_port_range = "8900-9000"
     # that the Solana network can run as fast as possible.
     affinity = "0-16"
 
+    # Which CPU core to use for the POH service.  This is a special core
+    # because it's the only one pinned by the Solana Labs.  This should
+    # not overlap with the affinity specified above.
+    poh_core = 17
+
     # How many net tiles to run.  Each networking tile will service
     # exactly one queue from a network device being listened to.  If
     # there are less net tiles than queues, some queues will not get

diff --git a/src/app/fdctl/run/run_solana.c b/src/app/fdctl/run/run_solana.c
@@ -55,6 +55,8 @@ solana_labs_main( void * args ) {
   ADDU( "--firedancer-tpu-port", config->tiles.quic.regular_transaction_listen_port );
   ADDU( "--firedancer-tvu-port", config->tiles.shred.shred_listen_port              );
 
+  ADDU( "--experimental-poh-pinned-cpu-core", config->layout.poh_core );
+
   /* consensus */
   ADD( "--identity", config->consensus.identity_path );
   if( strcmp( config->consensus.vote_account_path, "" ) )