qemu-e2k/include/block
Stefano Garzarella 1793ad0247 iothread: add aio-max-batch parameter
The `aio-max-batch` parameter will be propagated to AIO engines
and it will be used to control the maximum number of queued requests.

When there are in queue a number of requests equal to `aio-max-batch`,
the engine invokes the system call to forward the requests to the kernel.

This parameter allows us to control the maximum batch size to reduce
the latency that requests might accumulate while queued in the AIO
engine queue.

If `aio-max-batch` is equal to 0 (default value), the AIO engine will
use its default maximum batch size value.

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-id: 20210721094211.69853-3-sgarzare@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2021-07-21 13:47:50 +01:00
..
accounting.h block: add empty account cookie type 2019-10-10 10:56:18 +02:00
aio-wait.h qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
aio.h iothread: add aio-max-batch parameter 2021-07-21 13:47:50 +01:00
aio_task.h block: introduce aio task pool 2019-10-10 10:56:17 +02:00
block-copy.h block-copy: atomic .cancelled and .finished fields in BlockCopyCallState 2021-06-25 14:33:51 +03:00
block-hmp-cmds.h monitor/hmp: move hmp_info_block* to block-hmp-cmds.c 2020-03-09 18:20:21 +00:00
block.h block: Acquire AioContexts during bdrv_reopen_multiple() 2021-07-09 13:19:11 +02:00
block_backup.h block/backup: drop unused synchronization interface 2018-12-14 11:52:40 +01:00
block_int.h block: add max_hw_transfer to BlockLimits 2021-06-25 10:54:13 +02:00
blockjob.h blockjob: return status from block_job_set_speed() 2021-03-08 15:14:15 -06:00
blockjob_int.h blockjob: add set_speed to BlockJobDriver 2021-01-26 14:36:37 +01:00
dirty-bitmap.h block: remove dirty bitmaps 'status' field 2021-03-18 09:22:55 +00:00
export.h block/export: Move blk to BlockExport 2020-10-02 15:46:40 +02:00
fuse.h fuse: Allow exporting BDSs via FUSE 2020-12-11 17:52:39 +01:00
nbd.h nbd/client-connection: add option for non-blocking connection attempt 2021-06-18 12:21:22 -05:00
nvme.h hw/nvme: fix endianess conversion and add controller list 2021-06-29 07:16:25 +02:00
qapi.h qapi: Allow getting flat output from 'query-named-block-nodes' 2020-02-20 16:43:42 +01:00
qdict.h vl: plumb keyval-based options into -readconfig 2021-06-04 13:50:04 +02:00
raw-aio.h block/io_uring: implements interfaces for io_uring 2020-01-30 20:59:41 +00:00
replication.h replication: move include out of root directory 2021-05-26 14:49:46 +02:00
snapshot.h block: rename and alter bdrv_all_find_snapshot semantics 2021-02-08 11:19:51 +00:00
thread-pool.h Clean up decorations and whitespace around header guards 2016-07-12 16:20:46 +02:00
throttle-groups.h block/throttle-groups: throttle_group_co_io_limits_intercept(): 64bit bytes 2021-02-03 08:14:00 -06:00
write-threshold.h write-threshold: deal with includes 2021-05-14 16:14:10 +02:00