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name-hash: add perf test for lazy_init_name_hash

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Created t/perf/p0004-lazy-init-name-hash.sh test
to demonstrate correctness and performance gains
with the multithreaded version of lazy_init_name_hash().

Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Jeff Hostetler 2017-03-23 13:47:05 +00:00 committed by Junio C Hamano
parent ea19489532
commit 89c3b0ad43
1 changed files with 19 additions and 0 deletions
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t/perf/p0004-lazy-init-name-hash.sh Normal file
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#!/bin/sh
test_description='Tests multi-threaded lazy_init_name_hash'
. ./perf-lib.sh
test_perf_large_repo
test_checkout_worktree
test_expect_success 'verify both methods build the same hashmaps' '
$GIT_BUILD_DIR/t/helper/test-lazy-init-name-hash$X --dump --single | sort >out.single &&
$GIT_BUILD_DIR/t/helper/test-lazy-init-name-hash$X --dump --multi | sort >out.multi &&
test_cmp out.single out.multi
'
test_expect_success 'multithreaded should be faster' '
$GIT_BUILD_DIR/t/helper/test-lazy-init-name-hash$X --perf >out.perf
'
test_done