Important

The SingleStore 9.1 release candidate (RC) is available now. It will be promoted to general availability (GA) soon and at that time it will be renamed to SingleStore 10.

In the interim, SingleStore 9.1 RC can be used to preview, evaluate, and provide feedback on the new and upcoming features in SingleStore 10, while SingleStore 9.0 is recommended for production workloads.

Bash

Dependencies

singlestore client
Bourne-Again Shell (bash)

Code

Shell

#!/bin/bash

MHOST="127.0.0.1"
MPORT="3306"
MUSER="root"
MDB=""
NUM_WORKERS=128
BATCH_SIZE=256

memsql_exec()
{
       singlestore -h $MHOST -P $MPORT -u $MUSER $MDB -e "$1"
}

memsql_exec_multi()
{
       singlestore -h $MHOST -P $MPORT -u $MUSER $MDB -e \
                "$(for ((b = 0; b < $BATCH_SIZE; b++)); do
                        echo "$1;"
                done)"
}

echo "Creating database test"
memsql_exec "CREATE DATABASE IF NOT EXISTS test"
MDB="test"

echo "Creating table tbl"
memsql_exec "CREATE TABLE IF NOT EXISTS tbl (id INT AUTO_INCREMENT PRIMARY KEY)"

echo "Launching $NUM_WORKERS workers"
sleep 1
declare -a WORKERS
for ((worker = 0; worker < $NUM_WORKERS; worker++)); do
        (while [ 1 ]; do
                echo "Worker $worker inserting"
                memsql_exec_multi "INSERT INTO tbl VALUES (NULL)"
        done) &
        WORKERS[$worker]=$!
done

sleep 10

for ((worker = 0; worker < $NUM_WORKERS; worker++)); do
        echo "Killing worker $worker"
        kill ${WORKERS[$worker]}
        wait ${WORKERS[$worker]} 2>/dev/null
done
echo "Cleaning up"
sleep 1
memsql_exec "DROP DATABASE test"

Bash

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