From b6467ddd73458324abe9b8c470a78d9a60f396ca Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Fabiano=20Fid=C3=AAncio?= Date: Mon, 25 Apr 2022 16:53:58 +0200 Subject: [PATCH] clh: Expose disk rate limiter config MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit With everything implemented, let's now expose the disk rate limiter configuration options in the Cloud Hypervisor configuration file. Fixes: #4139 Signed-off-by: Fabiano Fidêncio --- src/runtime/config/configuration-clh.toml.in | 36 ++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/src/runtime/config/configuration-clh.toml.in b/src/runtime/config/configuration-clh.toml.in index 5dfe2082d8..41d4ae4930 100644 --- a/src/runtime/config/configuration-clh.toml.in +++ b/src/runtime/config/configuration-clh.toml.in @@ -215,6 +215,42 @@ block_device_driver = "virtio-blk" # This is *optional* and only takes effect if net_rate_limiter_bw_max_rate is # set to a non zero value. #net_rate_limiter_ops_one_time_burst = 0 +# +# These options are related to disk rate limiter at the VMM level, and are +# based on the Cloud Hypervisor I/O throttling. Those are disabled by default +# and we strongly advise users to refer the Cloud Hypervisor official +# documentation for a better understanding of its internals: +# https://github.com/cloud-hypervisor/cloud-hypervisor/blob/main/docs/io_throttling.md +# +# Bandwidth rate limiter options +# +# disk_rate_limiter_bw_max_rate controls disk I/O bandwidth (size in bits/sec +# for SB/VM). +# The same value is used for inbound and outbound bandwidth. +# Default 0-sized value means unlimited rate. +#disk_rate_limiter_bw_max_rate = 0 +# +# disk_rate_limiter_bw_one_time_burst increases the initial max rate and this +# initial extra credit does *NOT* affect the overall limit and can be used for +# an *initial* burst of data. +# This is *optional* and only takes effect if disk_rate_limiter_bw_max_rate is +# set to a non zero value. +#disk_rate_limiter_bw_one_time_burst = 0 +# +# Operation rate limiter options +# +# disk_rate_limiter_ops_max_rate controls disk I/O bandwidth (size in ops/sec +# for SB/VM). +# The same value is used for inbound and outbound bandwidth. +# Default 0-sized value means unlimited rate. +#disk_rate_limiter_ops_max_rate = 0 +# +# disk_rate_limiter_ops_one_time_burst increases the initial max rate and this +# initial extra credit does *NOT* affect the overall limit and can be used for +# an *initial* burst of data. +# This is *optional* and only takes effect if disk_rate_limiter_bw_max_rate is +# set to a non zero value. +#disk_rate_limiter_ops_one_time_burst = 0 [agent.@PROJECT_TYPE@] # If enabled, make the agent display debug-level messages.