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Merged
merged 1 commit into from
Nov 12, 2025
Merged

snapshots: lthash v3 #7064

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24 changes: 24 additions & 0 deletions book/api/metrics-generated.md
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Original file line number Diff line number Diff line change
Expand Up @@ -1128,3 +1128,27 @@
| <span class="metrics-name">snapwh_&#8203;state</span> | gauge | State of the tile. 0=IDLE, 1=PROCESSING, 4=SHUTDOWN |

</div>

## Snapla Tile

<div class="metrics">

| Metric | Type | Description |
|--------|------|-------------|
| <span class="metrics-name">snapla_&#8203;state</span> | gauge | State of the tile. 0=IDLE, 1=PROCESSING, 2=FINISHING, 3=ERROR, 4=SHUTDOWN |
| <span class="metrics-name">snapla_&#8203;full_&#8203;accounts_&#8203;hashed</span> | gauge | Number of accounts hashed for the full snapshot during snapshot loading. Might decrease if snapshot load is aborted and restarted |
| <span class="metrics-name">snapla_&#8203;incremental_&#8203;accounts_&#8203;hashed</span> | gauge | Number of accounts hashed for the incremental snapshot during snapshot loading. Might decrease if snapshot load is aborted and restarted |

</div>

## Snapls Tile

<div class="metrics">

| Metric | Type | Description |
|--------|------|-------------|
| <span class="metrics-name">snapls_&#8203;state</span> | gauge | State of the tile. 0=IDLE, 1=PROCESSING, 2=FINISHING, 3=ERROR, 4=SHUTDOWN |
| <span class="metrics-name">snapls_&#8203;full_&#8203;accounts_&#8203;hashed</span> | gauge | Number of accounts hashed for the full snapshot during snapshot loading. Might decrease if snapshot load is aborted and restarted |
| <span class="metrics-name">snapls_&#8203;incremental_&#8203;accounts_&#8203;hashed</span> | gauge | Number of accounts hashed for the incremental snapshot during snapshot loading. Might decrease if snapshot load is aborted and restarted |

</div>
61 changes: 54 additions & 7 deletions src/app/firedancer-dev/commands/backtest.c
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Original file line number Diff line number Diff line change
Expand Up @@ -47,10 +47,12 @@ backtest_topo( config_t * config ) {
config->development.no_clone = 1;

ulong exec_tile_cnt = config->firedancer.layout.exec_tile_count;
ulong lta_tile_cnt = config->firedancer.layout.snapla_tile_count;

int disable_snap_loader = !config->gossip.entrypoints_cnt;
int snap_vinyl = !!config->firedancer.vinyl.enabled;
int solcap_enabled = strlen( config->capture.solcap_capture )>0;
int disable_snap_loader = !config->gossip.entrypoints_cnt;
int snap_vinyl = !!config->firedancer.vinyl.enabled;
int solcap_enabled = strlen( config->capture.solcap_capture )>0;
int snapshot_lthash_disabled = config->development.snapshots.disable_lthash_verification;

fd_topo_t * topo = { fd_topob_new( &config->topo, config->name ) };
topo->max_page_size = fd_cstr_to_shmem_page_sz( config->hugetlbfs.max_page_size );
Expand Down Expand Up @@ -109,10 +111,20 @@ backtest_topo( config_t * config ) {
fd_topob_wksp( topo, "snapld" );
fd_topob_wksp( topo, "snapdc" );
fd_topob_wksp( topo, "snapin" );

if( FD_LIKELY( !snapshot_lthash_disabled ) ) {
fd_topob_wksp( topo, "snapla" );
fd_topob_wksp( topo, "snapls" );
}

fd_topo_tile_t * snapct_tile = fd_topob_tile( topo, "snapct", "snapct", "metric_in", cpu_idx++, 0, 0 );
fd_topo_tile_t * snapld_tile = fd_topob_tile( topo, "snapld", "snapld", "metric_in", cpu_idx++, 0, 0 );
fd_topo_tile_t * snapdc_tile = fd_topob_tile( topo, "snapdc", "snapdc", "metric_in", cpu_idx++, 0, 0 );
snapin_tile = fd_topob_tile( topo, "snapin", "snapin", "metric_in", cpu_idx++, 0, 0 );
if( FD_LIKELY( !snapshot_lthash_disabled ) ) {
FOR(lta_tile_cnt) fd_topob_tile( topo, "snapla", "snapla", "metric_in", cpu_idx++, 0, 0 )->allow_shutdown = 1;
/**/ fd_topob_tile( topo, "snapls", "snapls", "metric_in", cpu_idx++, 0, 0 )->allow_shutdown = 1;
}
snapct_tile->allow_shutdown = 1;
snapld_tile->allow_shutdown = 1;
snapdc_tile->allow_shutdown = 1;
Expand Down Expand Up @@ -143,18 +155,40 @@ backtest_topo( config_t * config ) {
fd_topob_wksp( topo, "snapct_ld" );
fd_topob_wksp( topo, "snapld_dc" );
fd_topob_wksp( topo, "snapdc_in" );
fd_topob_wksp( topo, "snapin_ct" );
if( FD_UNLIKELY( snapshot_lthash_disabled ) ) {
fd_topob_wksp( topo, "snapin_ct" );
} else {
fd_topob_wksp( topo, "snapls_ct" );
}

fd_topob_wksp( topo, "snapin_manif" );
fd_topob_wksp( topo, "snapct_repr" );

if( FD_LIKELY( !snapshot_lthash_disabled ) ) {
fd_topob_wksp( topo, "snapla_ls" );
fd_topob_wksp( topo, "snapin_ls" );
}

fd_topob_link( topo, "snapct_ld", "snapct_ld", 128UL, sizeof(fd_ssctrl_init_t), 1UL );
fd_topob_link( topo, "snapld_dc", "snapld_dc", 16384UL, USHORT_MAX, 1UL );
fd_topob_link( topo, "snapdc_in", "snapdc_in", 16384UL, USHORT_MAX, 1UL );
fd_topob_link( topo, "snapin_ct", "snapin_ct", 128UL, 0UL, 1UL );
if( FD_UNLIKELY( snapshot_lthash_disabled ) ) {
fd_topob_link( topo, "snapin_ct", "snapin_ct", 128UL, 0UL, 1UL );
}
fd_topob_link( topo, "snapin_manif", "snapin_manif", 4UL, sizeof(fd_snapshot_manifest_t), 1UL ); /* TODO: Should be depth 1 or 2 but replay backpressures */
fd_topob_link( topo, "snapct_repr", "snapct_repr", 128UL, 0UL, 1UL )->permit_no_consumers = 1;

fd_topob_tile_in ( topo, "snapct", 0UL, "metric_in", "snapin_ct", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
if( FD_LIKELY( !snapshot_lthash_disabled ) ) {
FOR(lta_tile_cnt) fd_topob_link( topo, "snapla_ls", "snapla_ls", 128UL, sizeof(fd_lthash_value_t), 1UL );
/**/ fd_topob_link( topo, "snapin_ls", "snapin_ls", 256UL, sizeof(fd_snapshot_full_account_t), 1UL );
/**/ fd_topob_link( topo, "snapls_ct", "snapls_ct", 128UL, 0UL, 1UL );
}

if( FD_UNLIKELY( snapshot_lthash_disabled ) ) {
fd_topob_tile_in ( topo, "snapct", 0UL, "metric_in", "snapin_ct", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
} else {
fd_topob_tile_in ( topo, "snapct", 0UL, "metric_in", "snapls_ct", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
}
fd_topob_tile_in ( topo, "snapct", 0UL, "metric_in", "snapld_dc", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
fd_topob_tile_out( topo, "snapct", 0UL, "snapct_ld", 0UL );
fd_topob_tile_out( topo, "snapct", 0UL, "snapct_repr", 0UL );
Expand All @@ -163,9 +197,22 @@ backtest_topo( config_t * config ) {
fd_topob_tile_in ( topo, "snapdc", 0UL, "metric_in", "snapld_dc", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
fd_topob_tile_out( topo, "snapdc", 0UL, "snapdc_in", 0UL );
fd_topob_tile_in ( topo, "snapin", 0UL, "metric_in", "snapdc_in", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
fd_topob_tile_out( topo, "snapin", 0UL, "snapin_ct", 0UL );
if( FD_UNLIKELY( snapshot_lthash_disabled ) ) {
fd_topob_tile_out( topo, "snapin", 0UL, "snapin_ct", 0UL );
} else {
fd_topob_tile_out( topo, "snapin", 0UL, "snapin_ls", 0UL );
}

fd_topob_tile_out( topo, "snapin", 0UL, "snapin_manif", 0UL );
fd_topob_tile_in ( topo, "replay", 0UL, "metric_in", "snapin_manif", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );

if( FD_LIKELY( !snapshot_lthash_disabled ) ) {
FOR(lta_tile_cnt) fd_topob_tile_in ( topo, "snapla", i, "metric_in", "snapdc_in", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
FOR(lta_tile_cnt) fd_topob_tile_out( topo, "snapla", i, "snapla_ls", i );
/**/ fd_topob_tile_in ( topo, "snapls", 0UL, "metric_in", "snapin_ls", 0UL, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
FOR(lta_tile_cnt) fd_topob_tile_in ( topo, "snapls", 0UL, "metric_in", "snapla_ls", i, FD_TOPOB_RELIABLE, FD_TOPOB_POLLED );
/**/ fd_topob_tile_out( topo, "snapls", 0UL, "snapls_ct", 0UL );
}
} else {
fd_topob_wksp( topo, "genesi_out" );
fd_topob_link( topo, "genesi_out", "genesi_out", 2UL, 10UL*1024UL*1024UL+32UL+sizeof(fd_lthash_value_t), 1UL );
Expand Down
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