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changelog: Add information regarding scheduler implementation

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Signed-off-by: Maciej Szwed <maciej.szwed@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4857 (master)

(cherry picked from commit 67109ff88b)
Change-Id: Id389ffb2c6091add92fb2849fac21a0472c8a404
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/4960
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
This commit is contained in:
Maciej Szwed 2020-10-28 13:34:28 +01:00 committed by Tomasz Zawadzki
parent d3b788e9ab
commit ede2227a7c
1 changed files with 13 additions and 0 deletions
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13
CHANGELOG.md
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@ -38,6 +38,19 @@ 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