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pgbench based PostgreSQL perf testing
#!/bin/bash
# Assuming that testclusters are on localhost and $USER can start / stop clusters
# Results DB used for storing pg_stat_statement snapshots from test instances should be running already
export PGHOST=/var/run/postgresql
export PGUSER=postgres
export PGDATABASE=postgres
PGBENCH=/usr/lib/postgresql/12/bin/pgbench
PSQL=/usr/lib/postgresql/12/bin/psql
# Add/remove hosts as needed here !!!
RESULTS_STORE="-p 6432"
connection_str[0]="-p 5432"
connection_name[0]="11.5"
connection_str[1]='-p 5433'
connection_name[1]="12.0"
restart_cmd[0]='pg_ctlcluster 11 main restart'
restart_cmd[1]='pg_ctlcluster 12 main restart'
stop_cmd[0]='pg_ctlcluster 11 main stop'
stop_cmd[1]='pg_ctlcluster 12 main stop'
TEST_MODE="analytics"
SCALES="100 1000" # 100 = 10mio pgbench_accounts rows
PGBENCH_CLIENTS="1 2"
TEST_DURATION=7200 # seconds
DO_PGBENCH_INIT=1
DROP_TABLES_AFTER_TESTING=0 # when enough disk only for 1 instance
TEST_QUERIES=$(cat <<-HERE
SELECT avg(abalance) FROM pgbench_accounts JOIN pgbench_branches USING (bid) WHERE bid % 2 = 0;\n
SELECT COUNT(DISTINCT aid) FROM pgbench_accounts;\n
SELECT count(*) FROM pgbench_accounts JOIN pgbench_accounts_copy USING (aid) WHERE aid % 2 = 0;\n
SELECT sum(a.abalance) FROM pgbench_accounts a JOIN pgbench_accounts_copy USING (aid) WHERE a.bid % 10 = 0;\n
HERE
)
# Test start / stop cmd and conn str + pg_stat_statement setup
i=0
for conn_str in "${connection_str[@]}" ; do
${restart_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not restart ${connection_name[i]}"
exit 1
fi
$PSQL $conn_str -qXc "select 1" &>/dev/null
if [ "$?" -ne 0 ] ; then
echo "could not connect to $conn_str, check connection params. exiting..."
exit 1
fi
$PSQL $conn_str -qXc "create extension if not exists pg_stat_statements"
if [ $? -ne 0 ] ; then
echo "could not create pg_stat_statements. check shared_preload_libraries"
exit 1
fi
${stop_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
i=$((i + 1))
done
echo "*** creating TEST RESULTS table my_pg_stat_statements if not existing ***"
$PSQL $RESULTS_STORE -qc "create table if not exists my_pg_stat_statements as select ''::text as testset, ''::text as mode, 0 as scale, 0 as clients, now() as created_on, * from pg_stat_statements where false"
echo "deleting possible old results for test: $TEST_MODE"
$PSQL $RESULTS_STORE -qc "delete from my_pg_stat_statements where mode = '$TEST_MODE'"
i=0
for conn_str in "${connection_str[@]}" ; do
echo ""
echo "*** TESTING ${connection_name[i]} (conn_str $conn_str) ***"
echo ""
echo "restarting..."
${restart_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
# Drop old pgbench accounts tables if any
# $PSQL $conn_str -qXc "drop table if exists pgbench_accounts, pgbench_branches, pgbench_history, pgbench_tellers;"
for SCALE in $SCALES ; do
echo ""
echo "*** SCALE $SCALE ***"
echo ""
if [ "$DO_PGBENCH_INIT" -gt 0 ] ; then
echo "init scale $SCALE ..."
$PGBENCH "$conn_str" -i -q --foreign-keys --unlogged-tables -s $SCALE
$PSQL $conn_str -qXc "drop table if exists pgbench_accounts_copy"
$PSQL $conn_str -qXc "create unlogged table if not exists pgbench_accounts_copy as select * from pgbench_accounts"
$PSQL $conn_str -qXc "create unique index if not exists pgbench_accounts_copy_aid_idx ON pgbench_accounts_copy (aid)"
fi
$PSQL $conn_str -qXc "vacuum analyze"
$PSQL $conn_str -qXc "checkpoint"
echo "sleeping 10..."
sleep 10
for CLIENTS in $PGBENCH_CLIENTS ; do
echo ""
echo "*** CLIENTS $CLIENTS ***"
echo ""
echo "testing ${connection_name[i]} - scale $SCALE, duration $TEST_DURATION s ..."
$PSQL $conn_str -qXc "select pg_stat_statements_reset()"
echo -e $TEST_QUERIES | $PGBENCH $conn_str -c $CLIENTS --random-seed=666 -T $TEST_DURATION -f-
# Store results for this run
echo "storing pg_stat_statements results for ${connection_name[i]}..."
$PSQL $conn_str -qXc "copy (select '${connection_name[$i]}', '$TEST_MODE', ${SCALE:-NULL}, ${CLIENTS:-1}, now(), * from pg_stat_statements where calls > 1 and query ~* '^(INSERT|UPDATE|SELECT).*pgbench_') to stdout" | $PSQL $RESULTS_STORE -qXc "copy my_pg_stat_statements from stdin"
done # clients
done # scale
if [ $DROP_TABLES_AFTER_TESTING -gt 0 ]; then
# drop all created tables
$PSQL $conn_str -qXc "drop table if exists pgbench_accounts, pgbench_accounts_copy, pgbench_branches, pgbench_tellers, pgbench_history"
fi
echo "stopping..."
${stop_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
i=$((i + 1))
done # conn str
echo "done"
select
*,
avg(testset_mean_diff) over() as avg_testset_mean_diff,
avg(testset_stddev_diff) over() as testset_stddev_diff
from (
select
*,
case when lag(testset_mean) over w2 = 0 then 0 else round((100 * (testset_mean - lag(testset_mean) over w2) / lag(testset_mean) over w2)::numeric, 1) end as testset_mean_diff,
case when lag(testset_stddev) over w2 = 0 then 0 else round((100 * (testset_stddev - lag(testset_stddev) over w2) / lag(testset_stddev) over w2)::numeric, 1) end as testset_stddev_diff
from (
select
*,
make_interval(secs := (total_time / 1000)::int) as runtime,
case when lag(mean_time) over w = 0 then 0 else round((100 * (mean_time - lag(mean_time) over w) / lag(mean_time) over w)::numeric, 1) end as mean_diff_pct,
case when lag(stddev_time) over w = 0 then 0 else round((100 * (stddev_time - lag(stddev_time) over w) / lag(stddev_time) over w)::numeric, 1) end as stddev_diff_pct,
round(avg(mean_time) over(partition by testset, query), 4) as testset_mean,
round(avg(stddev_time) over(partition by testset, query), 4) as testset_stddev
from (
select
testset,
mode,
scale,
clients,
mean_time::numeric,
stddev_time::numeric,
total_time::int8,
calls,
case when shared_blks_hit + shared_blks_read > 0 then round((shared_blks_hit / (shared_blks_hit + shared_blks_read)::numeric) * 100, 1) else 0 end as hit_rate, created_on,
query::varchar(80)
from
my_pg_stat_statements
where
query ~ 'pgbench'
) x window w as (partition by mode, query, scale, clients order by testset) order by mode, query, scale, clients, testset
) y
window w2 as (partition by mode, query, scale, clients order by testset)
) z
order by mode, query, scale, clients, testset;
#!/bin/bash
# Assuming that testclusters are on localhost and $USER can start / stop clusters
# Results DB used for storing pg_stat_statement snapshots from test instances should be running already
export PGHOST=/var/run/postgresql
export PGUSER=postgres
export PGDATABASE=postgres
PGBENCH=/usr/lib/postgresql/12/bin/pgbench
PSQL=/usr/lib/postgresql/12/bin/psql
# Add/remove hosts as needed here !!!
RESULTS_STORE="-p 6432"
connection_str[0]="-p 5432"
connection_name[0]="11.5"
connection_str[1]='-p 5433'
connection_name[1]="12.0"
restart_cmd[0]='pg_ctlcluster 11 main restart'
restart_cmd[1]='pg_ctlcluster 12 main restart'
stop_cmd[0]='pg_ctlcluster 11 main stop'
stop_cmd[1]='pg_ctlcluster 12 main stop'
TEST_MODE="pgbench_plain"
SCALES="100 1000" # 100 = 10mio pgbench_accounts rows
PGBENCH_CLIENTS="1 2 4"
TEST_DURATION=7200 # seconds
DO_PGBENCH_INIT=1
DROP_TABLES_AFTER_TESTING=0 # when enough disk only for 1 instance
# Test start / stop cmd and conn str + pg_stat_statement setup
i=0
for conn_str in "${connection_str[@]}" ; do
${restart_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not restart ${connection_name[i]}"
exit 1
fi
$PSQL $conn_str -qXc "select 1" &>/dev/null
if [ "$?" -ne 0 ] ; then
echo "could not connect to $conn_str, check connection params. exiting..."
exit 1
fi
$PSQL $conn_str -qXc "create extension if not exists pg_stat_statements"
if [ $? -ne 0 ] ; then
echo "could not create pg_stat_statements. check shared_preload_libraries"
exit 1
fi
${stop_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
i=$((i + 1))
done
echo "*** creating TEST RESULTS table my_pg_stat_statements if not existing ***"
$PSQL $RESULTS_STORE -qc "create table if not exists my_pg_stat_statements as select ''::text as testset, ''::text as mode, 0 as scale, 0 as clients, now() as created_on, * from pg_stat_statements where false"
echo "deleting possible old results for test: $TEST_MODE"
$PSQL $RESULTS_STORE -qc "delete from my_pg_stat_statements where mode = '$TEST_MODE'"
i=0
for conn_str in "${connection_str[@]}" ; do
echo ""
echo "*** TESTING ${connection_name[i]} (conn_str $conn_str) ***"
echo ""
echo "restarting..."
${restart_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
# Drop old pgbench accounts tables if any
# $PSQL $conn_str -qXc "drop table if exists pgbench_accounts, pgbench_branches, pgbench_history, pgbench_tellers;"
for SCALE in $SCALES ; do
echo ""
echo "*** SCALE $SCALE ***"
echo ""
if [ "$DO_PGBENCH_INIT" -gt 0 ] ; then
echo "init scale $SCALE ..."
$PGBENCH "$conn_str" -i -q --foreign-keys -s $SCALE
fi
$PSQL $conn_str -qXc "vacuum analyze"
$PSQL $conn_str -qXc "checkpoint"
echo "sleeping 10..."
sleep 10
for CLIENTS in $PGBENCH_CLIENTS ; do
echo ""
echo "*** CLIENTS $CLIENTS ***"
echo ""
echo "testing ${connection_name[i]} - scale $SCALE, duration $TEST_DURATION s ..."
$PSQL $conn_str -qXc "select pg_stat_statements_reset()"
$PGBENCH $conn_str -c $CLIENTS --random-seed=666 -T $TEST_DURATION
# Store results for this run
echo "storing pg_stat_statements results for ${connection_name[i]}..."
$PSQL $conn_str -qXc "copy (select '${connection_name[$i]}', '$TEST_MODE', ${SCALE:-NULL}, ${CLIENTS:-1}, now(), * from pg_stat_statements where calls > 1 and query ~* '^(INSERT|UPDATE|SELECT).*pgbench_') to stdout" | $PSQL $RESULTS_STORE -qXc "copy my_pg_stat_statements from stdin"
done # clients
done # scale
if [ $DROP_TABLES_AFTER_TESTING -gt 0 ]; then
# drop all created tables
$PSQL $conn_str -qXc "drop table if exists pgbench_accounts, pgbench_branches, pgbench_tellers, pgbench_history"
fi
echo "stopping..."
${stop_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
i=$((i + 1))
done # conn str
echo "done"
#!/bin/bash
# Assuming that testclusters are on localhost and $USER can start / stop clusters
# Results DB used for storing pg_stat_statement snapshots from test instances should be running already
export PGHOST=/var/run/postgresql
export PGUSER=postgres
export PGDATABASE=postgres
PGBENCH=/usr/lib/postgresql/12/bin/pgbench
PSQL=/usr/lib/postgresql/12/bin/psql
# Add/remove hosts as needed here !!!
RESULTS_STORE="-p 6432"
connection_str[0]='-p 5433'
connection_name[0]="12.0"
connection_str[1]="-p 5432"
connection_name[1]="11.5"
restart_cmd[0]='pg_ctlcluster 12 main restart'
restart_cmd[1]='pg_ctlcluster 11 main restart'
stop_cmd[0]='pg_ctlcluster 12 main stop'
stop_cmd[1]='pg_ctlcluster 11 main stop'
TEST_MODE="pgbench_extra"
SCALES="100 1000"
PGBENCH_CLIENTS="1 2 4"
TEST_DURATION=7200 # seconds
DO_PGBENCH_INIT=1
DROP_TABLES_AFTER_TESTING=0 # when enough disk only for 1 instance
# Test start / stop cmd and conn str + pg_stat_statement setup
i=0
for conn_str in "${connection_str[@]}" ; do
${restart_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not restart ${connection_name[i]}"
exit 1
fi
$PSQL $conn_str -qXc "select 1" &>/dev/null
if [ "$?" -ne 0 ] ; then
echo "could not connect to $conn_str, check connection params. exiting..."
exit 1
fi
$PSQL $conn_str -qXc "create extension if not exists pg_stat_statements"
if [ $? -ne 0 ] ; then
echo "could not create pg_stat_statements. check shared_preload_libraries"
exit 1
fi
${stop_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
i=$((i + 1))
done
echo "*** creating TEST RESULTS table my_pg_stat_statements if not existing ***"
$PSQL $RESULTS_STORE -qc "create table if not exists my_pg_stat_statements as select ''::text as testset, ''::text as mode, 0 as scale, 0 as clients, now() as created_on, * from pg_stat_statements where false"
echo "deleting possible old results for test: $TEST_MODE"
$PSQL $RESULTS_STORE -qc "delete from my_pg_stat_statements where mode = '$TEST_MODE'"
i=0
for conn_str in "${connection_str[@]}" ; do
echo ""
echo "*** TESTING ${connection_name[i]} (conn_str $conn_str) ***"
echo ""
echo "restarting..."
${restart_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
for SCALE in $SCALES ; do
echo ""
echo "*** SCALE $SCALE ***"
echo ""
if [ "$DO_PGBENCH_INIT" -gt 0 ] ; then
echo "init scale $SCALE ..."
$PGBENCH "$conn_str" -i -q --foreign-keys -s $SCALE
$PSQL $conn_str -qXc "create index on pgbench_accounts(bid)"
$PSQL $conn_str -qXc "create index on pgbench_history(tid)"
$PSQL $conn_str -qXc "create index on pgbench_history(bid, aid)"
$PSQL $conn_str -qXc "create index on pgbench_history(mtime)"
fi
$PSQL $conn_str -qXc "vacuum analyze"
$PSQL $conn_str -qXc "checkpoint"
echo "sleeping 10..."
sleep 10
for CLIENTS in $PGBENCH_CLIENTS ; do
echo ""
echo "*** CLIENTS $CLIENTS ***"
echo ""
### TEST
# echo 3 | sudo tee /proc/sys/vm/drop_caches # drop file system cache
echo "testing ${connection_name[i]} - scale $SCALE, duration $TEST_DURATION s ..."
$PSQL $conn_str -qXc "select pg_stat_statements_reset()"
$PGBENCH $conn_str -c $CLIENTS --random-seed=666 -T $TEST_DURATION
# Store results for this run
echo "storing pg_stat_statements results for ${connection_name[i]}..."
$PSQL $conn_str -qXc "copy (select '${connection_name[$i]}', '$TEST_MODE', ${SCALE:-NULL}, ${CLIENTS:-1}, now(), * from pg_stat_statements where calls > 1 and query ~* '^(INSERT|UPDATE|SELECT).*pgbench_') to stdout" | $PSQL $RESULTS_STORE -qXc "copy my_pg_stat_statements from stdin"
done # clients
done # scale
if [ $DROP_TABLES_AFTER_TESTING -gt 0 ]; then
# drop all created tables
$PSQL $conn_str -qXc "drop table if exists pgbench_accounts, pgbench_branches, pgbench_tellers, pgbench_history"
fi
echo "stopping..."
${stop_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
i=$((i + 1))
done # conn str
echo "done"
#!/bin/bash
# Assuming that testclusters are on localhost and $USER can start / stop clusters
# Results DB used for storing pg_stat_statement snapshots from test instances should be running already
export PGHOST=/var/run/postgresql
export PGUSER=postgres
export PGDATABASE=postgres
PGBENCH=/usr/lib/postgresql/12/bin/pgbench
PSQL=/usr/lib/postgresql/12/bin/psql
# Add/remove hosts as needed here !!!
RESULTS_STORE="-p 6432"
connection_str[0]="-p 5432"
connection_name[0]="11.5"
connection_str[1]='-p 5433'
connection_name[1]="12.0"
restart_cmd[0]='pg_ctlcluster 11 main restart'
restart_cmd[1]='pg_ctlcluster 12 main restart'
stop_cmd[0]='pg_ctlcluster 11 main stop'
stop_cmd[1]='pg_ctlcluster 12 main stop'
TEST_MODE="readonly"
SCALES="100 1000 5000" # 100 = 10mio pgbench_accounts rows
PGBENCH_CLIENTS="1 2 4"
TEST_DURATION=7200 # seconds
DO_PGBENCH_INIT=1
DROP_TABLES_AFTER_TESTING=0 # when enough disk only for 1 instance
# Test start / stop cmd and conn str + pg_stat_statement setup
i=0
for conn_str in "${connection_str[@]}" ; do
${restart_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not restart ${connection_name[i]}"
exit 1
fi
$PSQL $conn_str -qXc "select 1" &>/dev/null
if [ "$?" -ne 0 ] ; then
echo "could not connect to $conn_str, check connection params. exiting..."
exit 1
fi
$PSQL $conn_str -qXc "create extension if not exists pg_stat_statements"
if [ $? -ne 0 ] ; then
echo "could not create pg_stat_statements. check shared_preload_libraries"
exit 1
fi
${stop_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
i=$((i + 1))
done
echo "*** creating TEST RESULTS table my_pg_stat_statements if not existing ***"
$PSQL $RESULTS_STORE -qc "create table if not exists my_pg_stat_statements as select ''::text as testset, ''::text as mode, 0 as scale, 0 as clients, now() as created_on, * from pg_stat_statements where false"
echo "deleting possible old results for test: $TEST_MODE"
$PSQL $RESULTS_STORE -qc "delete from my_pg_stat_statements where mode = '$TEST_MODE'"
i=0
for conn_str in "${connection_str[@]}" ; do
echo ""
echo "*** TESTING ${connection_name[i]} (conn_str $conn_str) ***"
echo ""
echo "restarting..."
${restart_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
for SCALE in $SCALES ; do
echo ""
echo "*** SCALE $SCALE ***"
echo ""
if [ "$DO_PGBENCH_INIT" -gt 0 ] ; then
echo "init scale $SCALE ..."
$PGBENCH "$conn_str" -i -q --foreign-keys --unlogged-tables -s $SCALE
fi
$PSQL $conn_str -qXc "vacuum analyze"
$PSQL $conn_str -qXc "checkpoint"
echo "sleeping 10..."
sleep 10
for CLIENTS in $PGBENCH_CLIENTS ; do
echo ""
echo "*** CLIENTS $CLIENTS ***"
echo ""
echo "testing ${connection_name[i]} - scale $SCALE, duration $TEST_DURATION s ..."
$PSQL $conn_str -qXc "select pg_stat_statements_reset()"
$PGBENCH $conn_str -c $CLIENTS --random-seed=666 -T $TEST_DURATION -S
# Store results for this run
echo "storing pg_stat_statements results for ${connection_name[i]}..."
$PSQL $conn_str -qXc "copy (select '${connection_name[$i]}', '$TEST_MODE', ${SCALE:-NULL}, ${CLIENTS:-1}, now(), * from pg_stat_statements where calls > 1 and query ~* '^(INSERT|UPDATE|SELECT).*pgbench_') to stdout" | $PSQL $RESULTS_STORE -qXc "copy my_pg_stat_statements from stdin"
done # clients
done # scale
if [ $DROP_TABLES_AFTER_TESTING -gt 0 ]; then
# drop all created tables
$PSQL $conn_str -qXc "drop table if exists pgbench_accounts, pgbench_branches, pgbench_tellers, pgbench_history"
fi
echo "stopping..."
${stop_cmd[i]}
if [ $? -ne 0 ] ; then
echo "could not stop ${connection_name[i]}"
exit 1
fi
i=$((i + 1))
done # conn str
echo "done"
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