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5bd8e2363a
This will help to keep us from using deprecated Python features going forward. Signed-off-by: Tristan Partin <tristan@neon.tech>
34 lines
1.2 KiB
Python
34 lines
1.2 KiB
Python
from __future__ import annotations
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from contextlib import closing
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from fixtures.compare_fixtures import PgCompare
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#
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# Test buffering GisT build. It WAL-logs the whole relation, in 32-page chunks.
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# As of this writing, we're duplicate those giant WAL records for each page,
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# which makes the delta layer about 32x larger than it needs to be.
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#
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def test_gist_buffering_build(neon_with_baseline: PgCompare):
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env = neon_with_baseline
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with closing(env.pg.connect()) as conn:
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with conn.cursor() as cur:
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# Create test table.
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cur.execute("create table gist_point_tbl(id int4, p point)")
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cur.execute(
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"insert into gist_point_tbl select g, point(g, g) from generate_series(1, 1000000) g;"
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)
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# Build the index.
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with env.record_pageserver_writes("pageserver_writes"):
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with env.record_duration("build"):
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cur.execute(
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"create index gist_pointidx2 on gist_point_tbl using gist(p) with (buffering = on)"
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)
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env.flush()
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env.report_peak_memory_use()
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env.report_size()
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