citus_stat_tenants performance overhead
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performance
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Description
I think this is widely known, but still wanted to document.
For a very simple insert workload ( `insert into simple_test VALUES (2.0,2);` and ` pgbench -f /tmp/f.sql -c 32 -j 8 -t 5000 -P 1
`:
- When citus_stat_tenants disabled, I get 13k tps
- When citus_stat_tenants enabled, I get 10k tps
- When citus_stat_tenants enabled and another session calling `citus_stat_tenants` continuously, I get 8k tps
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