Ameer Hamza 5fc134ff2f zvol: use multiple taskq ... Currently, zvol uses a single taskq, resulting in throughput bottleneck under heavy load due to lock contention on the single taskq. This patch addresses the performance bottleneck under heavy load conditions by utilizing multiple taskqs, thus mitigating lock contention. The number of taskqs scale dynamically based on the available CPUs in the system, as illustrated below: taskq total cpus taskqs threads threads ------- ------- ------- ------- 1 1 32 32 2 1 32 32 4 1 32 32 8 2 16 32 16 3 11 33 32 5 7 35 64 8 8 64 128 11 12 132 256 16 16 256 Reviewed-by: Alexander Motin <mav@FreeBSD.org> Reviewed-by: Tony Hutter <hutter2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tony Nguyen <tony.nguyen@delphix.com> Signed-off-by: Ameer Hamza <ahamza@ixsystems.com> Closes #15992		2024-04-17 10:10:24 -07:00
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spl.4	Linux: Reclaim unused spl_kmem_cache_reclaim	2024-01-08 16:11:39 -08:00
zfs.4	zvol: use multiple taskq	2024-04-17 10:10:24 -07:00