Date: Tue, 7 Mar 2017 15:27:40 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r314858 - stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201703071527.v27FRe8l016093@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: avg Date: Tue Mar 7 15:27:40 2017 New Revision: 314858 URL: https://svnweb.freebsd.org/changeset/base/314858 Log: MFC r314058: zfs: lower priority of zio_write_issue threads by four Obtained from: Panzura Sponsored by: Panzura Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c Tue Mar 7 15:27:23 2017 (r314857) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c Tue Mar 7 15:27:40 2017 (r314858) @@ -923,9 +923,17 @@ spa_taskqs_init(spa_t *spa, zio_type_t t * 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);
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201703071527.v27FRe8l016093>