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| author | Matias Bjørling <m@bjorling.me> | 2013-12-21 00:11:00 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-12-21 17:30:33 +0100 |
| commit | 200052440d3b56f593038a35b7c14bdc780184a9 (patch) | |
| tree | 487eade5e8f9150e6a0b374f3d49e066057e50b4 /Documentation/block/null_blk.txt | |
| parent | null_blk: corrections to documentation (diff) | |
| download | linux-200052440d3b56f593038a35b7c14bdc780184a9.tar.xz linux-200052440d3b56f593038a35b7c14bdc780184a9.zip | |
null_blk: set use_per_node_hctx param to false
The defaults for the module is to instantiate itself with blk-mq and a
submit queue for each CPU node in the system.
To save resources, initialize instead with a single submit queue.
Signed-off-by: Matias Bjorling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'Documentation/block/null_blk.txt')
| -rw-r--r-- | Documentation/block/null_blk.txt | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/block/null_blk.txt b/Documentation/block/null_blk.txt index 5603dad5534b..b2830b435895 100644 --- a/Documentation/block/null_blk.txt +++ b/Documentation/block/null_blk.txt @@ -65,7 +65,8 @@ hw_queue_depth=[0..qdepth]: Default: 64 III: Multi-queue specific parameters -use_per_node_hctx=[0/1]: Default: 1 - If 1, the multi-queue block layer is instantiated with a hardware dispatch - queue for each CPU node in the system. If 0, it is instantiated with the - number of queues defined in the submit_queues parameter. +use_per_node_hctx=[0/1]: Default: 0 + 0: The number of submit queues are set to the value of the submit_queues + parameter. + 1: The multi-queue block layer is instantiated with a hardware dispatch + queue for each CPU node in the system. |