Nikolai Zhubr schrieb am 13.02.2017 um 23:03:
Maybe I should have been more specific.
What I need is debugging/profiling pure communication side of server
operation, implying huge lots of requests and replies going over the
wire to and from the server within some continued (valid) session,
but so that the server is not actually doing anything above that (no
sql, no locking, no synchronizing, zero usefull activity, just
pumping network I/O)
If you are willing to drop the "no sql" requirement you could use something like
select rpad('*', 100000000, '*');
this will send a lot of data over the wire, the SQL overhead should be fairly
small.
You can send more data if you combine that with e.g. generate_series()
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