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Re: [RFC] hw/nvme: Use irqfd to send interrupts
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From: |
Jinhao Fan |
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Subject: |
Re: [RFC] hw/nvme: Use irqfd to send interrupts |
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Date: |
Sun, 24 Jul 2022 23:20:54 +0800 |
at 9:29 PM, Stefan Hajnoczi <stefanha@gmail.com> wrote:
>
> Nice, perf(1) is good for that. You can enable trace events and add
> kprobes/uprobes to record timestamps when specific functions are entered.
>
Thanks Stefan,
One last question: Currently we can achieve hundreds of KIOPS. That means
perf can easily capture millions of trace events per second. I found perf
has quite high overhead at such a rate of trace events. Do you have any
advices on tracing high IOPS tasks?
- [RFC] hw/nvme: Use irqfd to send interrupts, Jinhao Fan, 2022/07/09
- Re: [RFC] hw/nvme: Use irqfd to send interrupts, Klaus Jensen, 2022/07/12
- Re: [RFC] hw/nvme: Use irqfd to send interrupts, Jinhao Fan, 2022/07/20
- Re: [RFC] hw/nvme: Use irqfd to send interrupts, Stefan Hajnoczi, 2022/07/20
- Re: [RFC] hw/nvme: Use irqfd to send interrupts, Klaus Jensen, 2022/07/27
- Re: [RFC] hw/nvme: Use irqfd to send interrupts, Stefan Hajnoczi, 2022/07/27
- Re: [RFC] hw/nvme: Use irqfd to send interrupts, Jinhao Fan, 2022/07/28
- Re: [RFC] hw/nvme: Use irqfd to send interrupts, Stefan Hajnoczi, 2022/07/28