mirror_zfs

mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 10:37:35 +03:00

Files

T

Matthew Macy af20b97078 zfetch: Don't issue new streams when old have not completed

The current dmu_zfetch code implicitly assumes that I/Os complete
within min_sec_reap seconds. With async dmu and a readonly workload
(and thus no exponential backoff in operations from the "write
throttle") such as L2ARC rebuild it is possible to saturate the drives
with I/O requests. These are then effectively compounded with prefetch
requests.

This change reference counts streams and prevents them from being
recycled after their min_sec_reap timeout if they still have
outstanding I/Os.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #10900

2020-09-27 17:08:38 -07:00

FreeBSD: Add support for procfs_list

2020-09-23 16:43:51 -07:00

sys

zfetch: Don't issue new streams when old have not completed

2020-09-27 17:08:38 -07:00

.gitignore

OpenZFS restructuring - move platform specific sources

2019-09-06 11:26:26 -07:00

cityhash.h

Compile cityhash code into libzfs

2020-03-27 09:11:22 -07:00