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| author | delphij <delphij@FreeBSD.org> | 2014-10-20 22:13:50 +0000 |
|---|---|---|
| committer | delphij <delphij@FreeBSD.org> | 2014-10-20 22:13:50 +0000 |
| commit | e02ec23db84d6d93e4098d5400208c6bc8ae5b56 (patch) | |
| tree | 20adbecfb3b2f6adc464c5f8a7fa88c89ffd5e60 /cddl | |
| parent | 6bc23f0b46eecfc3f1b2eec9b0f02644aa2b8f8d (diff) | |
| download | FreeBSD-src-e02ec23db84d6d93e4098d5400208c6bc8ae5b56.zip FreeBSD-src-e02ec23db84d6d93e4098d5400208c6bc8ae5b56.tar.gz | |
MFC r272598: MFV r272585:
Split the godfather zio into CPU number's to reduce lock
contention.
Illumos issue:
5176 lock contention on godfather zio
Diffstat (limited to 'cddl')
| -rw-r--r-- | cddl/contrib/opensolaris/cmd/zdb/zdb.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/cddl/contrib/opensolaris/cmd/zdb/zdb.c b/cddl/contrib/opensolaris/cmd/zdb/zdb.c index 04970fc..f7cacaa 100644 --- a/cddl/contrib/opensolaris/cmd/zdb/zdb.c +++ b/cddl/contrib/opensolaris/cmd/zdb/zdb.c @@ -2594,10 +2594,12 @@ dump_block_stats(spa_t *spa) * all async I/Os to complete. */ if (dump_opt['c']) { - (void) zio_wait(spa->spa_async_zio_root); - spa->spa_async_zio_root = zio_root(spa, NULL, NULL, - ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | - ZIO_FLAG_GODFATHER); + for (int i = 0; i < max_ncpus; i++) { + (void) zio_wait(spa->spa_async_zio_root[i]); + spa->spa_async_zio_root[i] = zio_root(spa, NULL, NULL, + ZIO_FLAG_CANFAIL | ZIO_FLAG_SPECULATIVE | + ZIO_FLAG_GODFATHER); + } } if (zcb.zcb_haderrors) { |
