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spccache.h File Reference

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Functions

void get_tablespace_page_costs (Oid spcid, float8 *spc_random_page_cost, float8 *spc_seq_page_cost)

int get_tablespace_io_concurrency (Oid spcid)

int get_tablespace_maintenance_io_concurrency (Oid spcid)

Function Documentation

◆ get_tablespace_io_concurrency()

int get_tablespace_io_concurrency ( Oid spcid )

Definition at line 215 of file spccache.c.

216{

217 TableSpaceCacheEntry *spc = get_tablespace(spcid);

218

219 if (!spc->opts || spc->opts->effective_io_concurrency < 0)

220 return effective_io_concurrency;

221 else

222 return spc->opts->effective_io_concurrency;

223}

effective_io_concurrency

int effective_io_concurrency

Definition: bufmgr.c:155

get_tablespace

static TableSpaceCacheEntry * get_tablespace(Oid spcid)

Definition: spccache.c:107

TableSpaceCacheEntry

Definition: spccache.c:39

TableSpaceCacheEntry::opts

TableSpaceOpts * opts

Definition: spccache.c:41

TableSpaceOpts::effective_io_concurrency

int effective_io_concurrency

Definition: tablespace.h:46

References effective_io_concurrency, TableSpaceOpts::effective_io_concurrency, get_tablespace(), and TableSpaceCacheEntry::opts.

Referenced by read_stream_begin_impl().

◆ get_tablespace_maintenance_io_concurrency()

int get_tablespace_maintenance_io_concurrency ( Oid spcid )

Definition at line 229 of file spccache.c.

230{

231 TableSpaceCacheEntry *spc = get_tablespace(spcid);

232

233 if (!spc->opts || spc->opts->maintenance_io_concurrency < 0)

234 return maintenance_io_concurrency;

235 else

236 return spc->opts->maintenance_io_concurrency;

237}

maintenance_io_concurrency

int maintenance_io_concurrency

Definition: bufmgr.c:162

TableSpaceOpts::maintenance_io_concurrency

int maintenance_io_concurrency

Definition: tablespace.h:47

References get_tablespace(), maintenance_io_concurrency, TableSpaceOpts::maintenance_io_concurrency, and TableSpaceCacheEntry::opts.

Referenced by heap_index_delete_tuples(), and read_stream_begin_impl().

◆ get_tablespace_page_costs()

void get_tablespace_page_costs ( Oid spcid,

float8 * spc_random_page_cost,

float8 * spc_seq_page_cost

)

Definition at line 182 of file spccache.c.

185{

186 TableSpaceCacheEntry *spc = get_tablespace(spcid);

187

188 Assert(spc != NULL);

189

190 if (spc_random_page_cost)

191 {

192 if (!spc->opts || spc->opts->random_page_cost < 0)

193 *spc_random_page_cost = random_page_cost;

194 else

195 *spc_random_page_cost = spc->opts->random_page_cost;

196 }

197

198 if (spc_seq_page_cost)

199 {

200 if (!spc->opts || spc->opts->seq_page_cost < 0)

201 *spc_seq_page_cost = seq_page_cost;

202 else

203 *spc_seq_page_cost = spc->opts->seq_page_cost;

204 }

205}

random_page_cost

double random_page_cost

Definition: costsize.c:131

seq_page_cost

double seq_page_cost

Definition: costsize.c:130

Assert

Assert(PointerIsAligned(start, uint64))

TableSpaceOpts::random_page_cost

float8 random_page_cost

Definition: tablespace.h:44

TableSpaceOpts::seq_page_cost

float8 seq_page_cost

Definition: tablespace.h:45

References Assert(), get_tablespace(), TableSpaceCacheEntry::opts, random_page_cost, TableSpaceOpts::random_page_cost, seq_page_cost, and TableSpaceOpts::seq_page_cost.

Referenced by brincostestimate(), cost_bitmap_heap_scan(), cost_index(), cost_samplescan(), cost_seqscan(), cost_tidrangescan(), cost_tidscan(), genericcostestimate(), gincostestimate(), and system_time_samplescangetsamplesize().