Cherry pick #11840 to 20.5: Fix memory accounting via HTTP interface#11961
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abyss7 merged 6 commits intobackport/20.5/11840from Jun 25, 2020
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function perf_test()
{
time yes '127.1:8123/?wait_end_of_query=1' | head -n10000 | xargs -P10000 curl -s -d 'select 1' | grep -x -c 1
}
function server()
{
local limit=$1 && shift
clickhouse-server "$@" -- --max_server_memory_usage=$limit
}
perf_test:
- before this patch with 1G limit: succeed only ~800 queries
- after this patch with 1G limit: succeed ~8000 queries
- before this patch with 10G limit: succeed only ~3000 queries
- after this patch with 10G limit: succeed ~10000 queries
Fixes: #11153
w/o the patch the test fails with, since it succeed only 512 queries.
Actually there were two issues: - missing \n, so it picked the wrong query anway - no unique identifier, hence it may works incorrectly (and actually, event clickhouse-test script executes 'SELECT 1' query)
Fix memory accounting via HTTP interface
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Original pull-request #11840