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Use OCI Monitoring for cloud-side charts and alarms, and Linux commands over SSH for a live view of the VPS itself. To monitor both CPU and memory in OCI, enable the Compute Instance Monitoring plugin and check the oci_computeagent namespace; the agentless oci_vmi_resource_utilization option provides hypervisor-measured CPU, not the documented memory metric. Then watch a representative stream, establish your own baseline, and set alerts against the workload you actually observe.
Choose the right view for the question
OCI Monitoring helps you chart metrics over time and alert when they meet configured triggers. Linux tools show current host and process conditions directly. Use both: a cloud chart can reveal patterns and support notifications, while an SSH session helps investigate what the operating system and running processes are doing.
| Method | What it shows | What is required |
|---|---|---|
OCI agent-based metrics (oci_computeagent) |
CPU utilization, memory utilization, load average, and memory allocation stalls | Oracle Cloud Agent with the Compute Instance Monitoring plugin enabled and running |
OCI agentless CPU metric (oci_vmi_resource_utilization) |
Hypervisor-measured CPU utilization | No Oracle Cloud Agent monitoring tools for this metric |
| Linux over SSH | Current system and process details, with tools such as top, free, and vmstat |
SSH access and the relevant utilities on the instance |
Oracle describes the agent and agentless CPU metrics as different collection methods, so do not treat their charts as interchangeable time series. The documented agent-based metrics are emitted every 60 seconds; the agentless CPU metric table lists 3–4 minute granularity. OCI’s agentless metric option described here is CPU-only. See Oracle’s Agentless Compute Metrics and Compute Instance Metrics.
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1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsSet up CPU and memory charts in OCI
- Open the instance in the OCI Console. Select the instance you use for the YouTube stream.
- Check the monitoring plugin. Oracle Cloud Agent must be installed where required, and the Compute Instance Monitoring plugin must be enabled and running. The instance also needs a public IP or a service gateway to send metric data to OCI Monitoring.
- Open the metrics view. On the instance page, select Metrics under Resources, then choose the
oci_computeagentnamespace. - Inspect the available charts. Look for
CpuUtilizationandMemoryUtilization. Charts containing data confirm that OCI Monitoring is receiving these metrics. - Keep the source and cadence in mind. The documented agent metrics are emitted at a 60-second cadence. If instead you view
oci_vmi_resource_utilization, the cited agentless option is hypervisor-sourced CPU, with 3–4 minute granularity listed by Oracle; it does not replace the agent-based memory chart.
OCI defines MemoryUtilization as the percentage of used pages in the instance. The agent metric set also includes one-minute average LoadAverage and MemoryAllocationStalls. A rise in stall count is a reason to investigate memory pressure, not a direct measurement of the percentage of RAM in use. Oracle’s metric definitions are in Compute Instance Metrics.
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Check the VPS directly over SSH
Use these commands in an SSH session when a chart looks unusual or you want more immediate operating-system context:
top— a changing system and process view. Use it to see whether one process is consuming substantial CPU or memory while the stream is running.free— a memory summary. Compare the values over time rather than treating one snapshot as a universal pass/fail result.vmstat— virtual-memory statistics that can help show system activity across successive observations.mpstat— processor-related statistics; available through Oracle Linux’ssysstatpackage.sar— records system activity; also provided bysysstat.
Some slim OCI images may not include free, top, or vmstat by default; Oracle Linux documentation notes that procps-ng may be needed. Package availability depends on the actual image, so confirm the OS and repositories before installing anything. Oracle’s Oracle Linux documentation covers these utilities.
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Build a baseline during a representative stream
Oracle recommends measuring typical operation first so later changes can be recognized. For a streaming VPS, collect observations during a representative run, including startup and sustained operation, and compare them with quieter periods. A short sample taken only while idle may not describe the load during the stream.
- Record the instance, metric namespace, and observation time so you can compare like with like.
- Observe CPU and memory during ordinary streaming, startup, and a quiet period using OCI charts and SSH tools.
- Note recurring levels as well as brief spikes, and watch for changes in system load or memory allocation stalls alongside memory utilization.
- Use those observations as the VPS’s baseline; repeat the check after a material change to the workload or instance configuration.
There is no established universal safe CPU percentage or free-memory floor for a YouTube streaming VPS in the cited guidance. The sources also do not establish that a particular CPU or memory reading causes dropped frames. Use your own workload and symptoms to decide what merits investigation rather than applying an unsupported threshold.
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Configure an OCI alarm and verify notifications
OCI Monitoring evaluates alarm status once per minute and can send messages to configured destinations, including OCI Notifications or Streaming depending on the setup. Oracle summarizes the service this way: “The Monitoring service uses metrics to monitor resources and alarms to notify you when these metrics meet alarm-specified triggers.” See the Overview of Monitoring.
- Choose the metric you need to watch, using the agent-based namespace for documented memory utilization.
- Set the trigger based on the baseline you measured and the level of sustained or repeated pressure that matters for your instance. The Oracle sources do not prescribe a YouTube-streaming threshold.
- Choose and configure a notification destination, such as OCI Notifications, according to your OCI setup.
- Verify the notification path so you know an alarm reaches the intended destination.
Troubleshoot missing or confusing readings
- No agent-based charts or data: confirm Oracle Cloud Agent and the Compute Instance Monitoring plugin are installed, enabled, and running. Check that the instance has a public IP or service gateway for metric delivery.
- CPU appears but memory does not: confirm you selected
oci_computeagentand are looking forMemoryUtilization. The agentless namespace described here supplies CPU, not the documented memory metric. - Cloud chart and SSH readings differ: check whether you are comparing agent-based with agentless CPU data, or a charted interval with an instantaneous host view. Their collection methods and time granularity differ.
- A command is not found: the utility may not be installed on the image. Check the distribution and its package availability; Oracle Linux documentation identifies
sysstatformpstatandsar, and some slim images may needprocps-ngforfree,top, andvmstat. - Alarm messages never arrive: check the configured destination and notification path, then verify it. Alarm evaluation is once per minute, so it is not an instantaneous alerting mechanism.
Or let it run in the cloud
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