ClickHouse/tests/performance/async_remote_read.xml

<test>
    <settings>
        <async_socket_for_remote>1</async_socket_for_remote>
    </settings>
    <query>
        SELECT sum(x)
        FROM
        (
            SELECT sipHash64(sipHash64(sipHash64(number))) AS x
            FROM remote('127.0.0.{{2,3,4,5}}', numbers(10000000))
        )
        SETTINGS max_threads = 2, max_distributed_connections = 2
    </query>

    <!--<query>select sum(length(URL)) from hits_100m_single settings max_threads=8, max_streams_to_max_threads_ratio=2, allow_asynchronous_read_from_io_pool_for_merge_tree=0</query>-->
    <query>select sum(length(URL)) from hits_100m_single settings max_threads=8, max_streams_to_max_threads_ratio=4, allow_asynchronous_read_from_io_pool_for_merge_tree=1</query>
    <query>select sum(length(URL)) from hits_100m_single settings max_threads=8, max_streams_for_merge_tree_reading=32, allow_asynchronous_read_from_io_pool_for_merge_tree=1</query>
</test>