mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-09 07:52:19 +00:00
a25dd1d348
Server settings: - max_local_read_bandwidth_for_server - max_local_write_bandwidth_for_server Query settings: - max_local_read_bandwidth - max_local_write_bandwidth This is the preparation for adding ability to throttle BACKUPs Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
40 lines
1.5 KiB
Bash
Executable File
40 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
# Tags: no-s3-storage, no-random-settings, no-random-merge-tree-settings
|
|
|
|
CUR_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
|
|
# shellcheck source=../shell_config.sh
|
|
. "$CUR_DIR"/../shell_config.sh
|
|
|
|
$CLICKHOUSE_CLIENT -nm -q "
|
|
drop table if exists data;
|
|
create table data (key UInt64 CODEC(NONE)) engine=MergeTree() order by tuple() settings min_bytes_for_wide_part=1e9, min_bytes_for_compact_part=0;
|
|
"
|
|
|
|
# reading 1e6*8 bytes with 1M bandwith it should take (8-1)/1=7 seconds
|
|
$CLICKHOUSE_CLIENT -q "insert into data select * from numbers(1e6)"
|
|
|
|
read_methods=(
|
|
read
|
|
pread
|
|
pread_threadpool
|
|
# NOTE: io_uring doing all IO from one thread, that is not attached to the query
|
|
# io_uring
|
|
# NOTE: mmap cannot be throttled
|
|
# mmap
|
|
)
|
|
for read_method in "${read_methods[@]}"; do
|
|
query_id=$(random_str 10)
|
|
$CLICKHOUSE_CLIENT --query_id "$query_id" -q "select * from data format Null settings max_local_read_bandwidth='1M', local_filesystem_read_method='$read_method'"
|
|
$CLICKHOUSE_CLIENT -nm -q "
|
|
SYSTEM FLUSH LOGS;
|
|
SELECT
|
|
'$read_method',
|
|
query_duration_ms >= 7e3,
|
|
ProfileEvents['ReadBufferFromFileDescriptorReadBytes'] > 8e6,
|
|
ProfileEvents['LocalReadThrottlerBytes'] > 8e6,
|
|
ProfileEvents['LocalReadThrottlerSleepMicroseconds'] > 7e6
|
|
FROM system.query_log
|
|
WHERE current_database = '$CLICKHOUSE_DATABASE' AND query_id = '$query_id' AND type != 'QueryStart'
|
|
"
|
|
done
|