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changelog: Add information regarding scheduler implementation

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Signed-off-by: Maciej Szwed <maciej.szwed@intel.com>
Change-Id: Id389ffb2c6091add92fb2849fac21a0472c8a404
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4857
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
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Maciej Szwed 2020-10-28 13:34:28 +01:00 committed by Tomasz Zawadzki
parent 7fc48a5ffc
commit 67109ff88b
1 changed files with 13 additions and 0 deletions
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CHANGELOG.md
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@ -40,6 +40,19 @@ Removed `spdk_subsystem_config` callback for submodules as part of legacy config
Removed `spdk_app_get_running_config` function that printed configuration in legacy format,
and removed `usr1_handler` from `struct spdk_app_opts` callback that was used to call it.
Added SPDK thread scheduler framework which is used to rebalance load among CPU cores.
The scheduler implementation is pluggable and two schedulers are added first, `static` scheduler
and `gscheduler` scheduler.
`static` scheduler is used by default and does not reschedule threads and keeps the initial
assignments.
CPU frequency governor framework and implementation are also added.
`dpdk_governor` is the first implementation and is based on rte_power library of DPDK.
`gscheduler` scheduler utilizes the CPU frequency governor.
Scheduler and governor frameworks are experimental features.
### fio
Bdev fio_plugin no longer supports legacy configuration files. Options `spdk_conf` and