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| author | avg <avg@FreeBSD.org> | 2017-03-07 15:27:40 +0000 |
|---|---|---|
| committer | avg <avg@FreeBSD.org> | 2017-03-07 15:27:40 +0000 |
| commit | c8cc52a72eded562905f2a1df47ce7f517dd0f53 (patch) | |
| tree | 711d040b948fa4bf5fb823fcf9e4cbd80db69d6d /sys/cddl | |
| parent | cab2031fd56ae53b767980eaf2b60d6657322f86 (diff) | |
| download | FreeBSD-src-c8cc52a72eded562905f2a1df47ce7f517dd0f53.zip FreeBSD-src-c8cc52a72eded562905f2a1df47ce7f517dd0f53.tar.gz | |
MFC r314058: zfs: lower priority of zio_write_issue threads by four
Obtained from: Panzura
Sponsored by: Panzura
Diffstat (limited to 'sys/cddl')
| -rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c index 5aa0718..2f8b7d6 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c @@ -923,9 +923,17 @@ spa_taskqs_init(spa_t *spa, zio_type_t t, zio_taskq_type_t q) * The write issue taskq can be extremely CPU * intensive. Run it at slightly lower priority * than the other taskqs. + * FreeBSD notes: + * - numerically higher priorities are lower priorities; + * - if priorities divided by four (RQ_PPQ) are equal + * then a difference between them is insignificant. */ if (t == ZIO_TYPE_WRITE && q == ZIO_TASKQ_ISSUE) - pri++; +#ifdef illumos + pri--; +#else + pri += 4; +#endif tq = taskq_create_proc(name, value, pri, 50, INT_MAX, spa->spa_proc, flags); |
