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Commit535eae1

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kvapkelvich
authored andcommitted
Add a lock graph dumping function to multimaster sql api.
1 parent42e0dc0 commit535eae1

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4 files changed

+34
-4
lines changed

4 files changed

+34
-4
lines changed

‎multimaster--1.0.sql

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -40,6 +40,10 @@ CREATE FUNCTION mtm.make_table_local(relation regclass) RETURNS void
4040
AS'MODULE_PATHNAME','mtm_make_table_local'
4141
LANGUAGE C;
4242

43+
CREATEFUNCTIONmtm.dump_lock_graph() RETURNStext
44+
AS'MODULE_PATHNAME','mtm_dump_lock_graph'
45+
LANGUAGE C;
46+
4347
CREATETABLEIF NOT EXISTSmtm.ddl_log (issuedtimestamp with time zonenot null, querytext);
4448

4549
CREATETABLEIF NOT EXISTSmtm.local_tables(rel_schematext, rel_nametext,primary key(rel_schema, rel_name));

‎multimaster.c

Lines changed: 26 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -107,6 +107,7 @@ PG_FUNCTION_INFO_V1(mtm_get_snapshot);
107107
PG_FUNCTION_INFO_V1(mtm_get_nodes_state);
108108
PG_FUNCTION_INFO_V1(mtm_get_cluster_state);
109109
PG_FUNCTION_INFO_V1(mtm_make_table_local);
110+
PG_FUNCTION_INFO_V1(mtm_dump_lock_graph);
110111

111112
staticSnapshotMtmGetSnapshot(Snapshotsnapshot);
112113
staticvoidMtmInitialize(void);
@@ -2153,6 +2154,31 @@ Datum mtm_make_table_local(PG_FUNCTION_ARGS)
21532154
return false;
21542155
}
21552156

2157+
Datummtm_dump_lock_graph(PG_FUNCTION_ARGS)
2158+
{
2159+
StringInfos=makeStringInfo();
2160+
inti;
2161+
for (i=0;i<MtmNodes;i++)
2162+
{
2163+
size_tsize;
2164+
char*data=RaftableGet(psprintf("lock-graph-%d",i+1),&size,NULL, true);
2165+
if (!data)continue;
2166+
GlobalTransactionId*gtid= (GlobalTransactionId*)data;
2167+
GlobalTransactionId*last= (GlobalTransactionId*)(data+size);
2168+
appendStringInfo(s,"node-%d lock graph: ",i+1);
2169+
while (gtid!=last) {
2170+
GlobalTransactionId*src=gtid++;
2171+
appendStringInfo(s,"%d:%d -> ",src->node,src->xid);
2172+
while (gtid->node!=0) {
2173+
GlobalTransactionId*dst=gtid++;
2174+
appendStringInfo(s,"%d:%d, ",dst->node,dst->xid);
2175+
}
2176+
gtid+=1;
2177+
}
2178+
appendStringInfo(s,"\n");
2179+
}
2180+
returnCStringGetTextDatum(s->data);
2181+
}
21562182

21572183
/*
21582184
* -------------------------------------------

‎t/002_dtmbench.pl

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -60,7 +60,7 @@ sub allocate_ports
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listen_addresses = '$host'
6161
unix_socket_directories = ''
6262
port =$pgport
63-
max_prepared_transactions =10
63+
max_prepared_transactions =1000
6464
max_worker_processes = 10
6565
wal_level = logical
6666
fsync = off
@@ -103,13 +103,13 @@ sub allocate_ports
103103
push(@argv,'-n', 1000,'-a', 1000,'-w', 10,'-r', 1);
104104

105105
diag("running dtmbench -i");
106-
if (TestLib::run_log([@argv,'-i']))
106+
if (!TestLib::run_log([@argv,'-i']))
107107
{
108108
BAIL_OUT("dtmbench -i failed");
109109
}
110110

111111
diag("running dtmbench");
112-
if (TestLib::run_log(\@argv,'>', \$out))
112+
if (!TestLib::run_log(\@argv,'>', \$out))
113113
{
114114
fail("dtmbench failed");
115115
}

‎t/003_pgbench.pl

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -62,7 +62,7 @@ sub allocate_ports
6262
listen_addresses = '$host'
6363
unix_socket_directories = ''
6464
port =$pgport
65-
max_prepared_transactions =10
65+
max_prepared_transactions =1000
6666
max_worker_processes = 10
6767
wal_level = logical
6868
fsync = off

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