44 lines
1.7 KiB
Diff
44 lines
1.7 KiB
Diff
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From 14b8a140c5794b28ccbb1c396924a9363767b7ea Mon Sep 17 00:00:00 2001
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From: Keqian Zhu <zhukeqian1@huawei.com>
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Date: Thu, 4 Aug 2022 15:34:59 -0400
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Subject: [PATCH 2/3] cpu_qos: Add aditional setting for cpu QOS
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Set overload_detect_period and offline_wait_interval, so as
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to prevent low priority vm to be hungry too much time.
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Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
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---
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qos_controller/cpucontroller.py | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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diff --git a/qos_controller/cpucontroller.py b/qos_controller/cpucontroller.py
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index f857973..f2a67e0 100644
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--- a/qos_controller/cpucontroller.py
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+++ b/qos_controller/cpucontroller.py
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@@ -23,6 +23,10 @@ import util
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LOW_PRIORITY_SLICES_PATH = "/sys/fs/cgroup/cpu/low_prio_machine.slice"
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LOW_PRIORITY_QOS_LEVEL = -1
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+OVERLOAG_DETECT_PERIOD_PATH = "/proc/sys/kernel/qos_overload_detect_period_ms"
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+OVERLOAG_DETECT_PERIOD_MS = 100
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+OFFLINE_WAIT_INTERVAL_PATH = "/proc/sys/kernel/qos_offline_wait_interval_ms"
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+OFFLINE_WAIT_INTERVAL_MS = 100
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MIN_QUOTA_US = 0
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@@ -36,8 +40,10 @@ class CpuController:
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qos_level_path = os.path.join(LOW_PRIORITY_SLICES_PATH, "cpu.qos_level")
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try:
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util.file_write(qos_level_path, str(LOW_PRIORITY_QOS_LEVEL))
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+ util.file_write(OVERLOAG_DETECT_PERIOD_PATH, str(OVERLOAG_DETECT_PERIOD_MS))
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+ util.file_write(OFFLINE_WAIT_INTERVAL_PATH, str(OFFLINE_WAIT_INTERVAL_MS))
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except IOError as error:
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- LOGGER.error("Failed to set low priority cpu qos level: %s" % str(error))
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+ LOGGER.error("Failed to configure CPU QoS for low priority VMs: %s" % str(error))
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raise
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def limit_domain_bandwidth(self, guest_info, quota_threshold, abnormal_threshold):
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--
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2.33.0
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