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lib/bdev: Use not SPDK thread count but core count for mempool cache size

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Cache size of mempool is not based on SPDK thread but DPDK thread,
i.e. CPU core. So replace spdk_thread_get_count() by
spdk_env_get_core_count() to determine cache size of mempool in
spdk_bdev_initialize().

Besides, allocate and free stub cores at the corresponding unit tests.

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: Icc4deae84c74820af4de61e991fa3f8683add058
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/2767
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Broadcom CI
Community-CI: Mellanox Build Bot
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
This commit is contained in:
Shuhei Matsumoto 2020-06-04 13:38:38 +09:00 committed by Tomasz Zawadzki
parent 433223865e
commit 972b3ae3aa
3 changed files with 8 additions and 3 deletions
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6
lib/bdev/bdev.c
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@ -1168,10 +1168,10 @@ spdk_bdev_initialize(spdk_bdev_init_cb cb_fn, void *cb_arg)
/**
* Ensure no more than half of the total buffers end up local caches, by
* using spdk_thread_get_count() to determine how many local caches we need
* using spdk_env_get_core_count() to determine how many local caches we need
* to account for.
*/
cache_size = BUF_SMALL_POOL_SIZE / (2 * spdk_thread_get_count());
cache_size = BUF_SMALL_POOL_SIZE / (2 * spdk_env_get_core_count());
snprintf(mempool_name, sizeof(mempool_name), "buf_small_pool_%d", getpid());
g_bdev_mgr.buf_small_pool = spdk_mempool_create(mempool_name,
@ -1186,7 +1186,7 @@ spdk_bdev_initialize(spdk_bdev_init_cb cb_fn, void *cb_arg)
return;
}
cache_size = BUF_LARGE_POOL_SIZE / (2 * spdk_thread_get_count());
cache_size = BUF_LARGE_POOL_SIZE / (2 * spdk_env_get_core_count());
snprintf(mempool_name, sizeof(mempool_name), "buf_large_pool_%d", getpid());
g_bdev_mgr.buf_large_pool = spdk_mempool_create(mempool_name,

2
test/unit/lib/bdev/bdev.c/bdev_ut.c
View File

@ -3401,6 +3401,7 @@ main(int argc, char **argv)
CU_ADD_TEST(suite, lock_lba_range_overlapped);
CU_ADD_TEST(suite, bdev_io_abort);
allocate_cores(1);
allocate_threads(1);
set_thread(0);
@ -3410,6 +3411,7 @@ main(int argc, char **argv)
CU_cleanup_registry();
free_threads();
free_cores();
return num_failures;
}

3
test/unit/lib/bdev/mt/bdev.c/bdev_ut.c
View File

@ -281,6 +281,7 @@ setup_test(void)
{
bool done = false;
allocate_cores(BDEV_UT_NUM_THREADS);
allocate_threads(BDEV_UT_NUM_THREADS);
set_thread(0);
spdk_bdev_initialize(bdev_init_cb, &done);
@ -311,6 +312,7 @@ teardown_test(void)
CU_ASSERT(g_teardown_done == true);
g_teardown_done = false;
free_threads();
free_cores();
}
static uint32_t
@ -1785,6 +1787,7 @@ bdev_set_io_timeout_mt(void)
CU_ASSERT(g_teardown_done == true);
g_teardown_done = false;
free_threads();
free_cores();
}
static bool g_io_done2;