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Date:      Tue, 27 Sep 2022 20:13:45 -0700
From:      Cameron Berkenpas <cam@neo-zeon.de>
To:        ppc@freebsd.org
Subject:   Re: bpvo pool exhausted
Message-ID:  <5fa07e44-b840-7a2d-996c-755b7f0bed7e@neo-zeon.de>
In-Reply-To: <CAOpTx7G0faPob9yO5Z_DtDLeipaAsc9R2oSmnoRd8PU43MRDhw@mail.gmail.com>
References:  <6ddde0d6-03d8-6b54-fb5d-9589e3e5c1e3@neo-zeon.de> <CAOpTx7G0faPob9yO5Z_DtDLeipaAsc9R2oSmnoRd8PU43MRDhw@mail.gmail.com>
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Hello,

I do not have a way to consistently reproduce this. I was finally able 
to get through recompiling all of the installed ports before I was able 
to test this.

Should this show up via sysctl? Because it does not:
sysctl machdep.moea64_bpvo_pool_size
sysctl: unknown oid 'machdep.moea64_bpvo_pool_size'

Should I be able to set this in /boot/loader.conf?

I did try setting it at boot. I'm not sure it did anything though. 
Nothing in dmesg.

The VM has 12 threads and 16GB of memory running 13.1-RELEASE-p2.

Maybe this is a new option in CURRENT?

On 9/27/22 11:54, Alfredo Dal'Ava Júnior wrote:
>
> Hi Cameron,
>
> In the loader prompt I type:
>
> set machdep.moea64_bpvo_pool_size=655360
> boot
>
> How are you testing it? What's the FreeBSD version and how much memory 
> do you have on it? As reference I tested it on VMs with 64GB of RAM in 
> the past.
>
> []'s
> Alfredo
>
> On Tue, Sep 27, 2022 at 2:41 PM Cameron Berkenpas <cam@neo-zeon.de> wrote:
>
>     Hello,
>
>     When recompiling my ports, I started getting periodic crashes on a VM
>     running on POWER9.
>
>     "bpvo pool exhausted".
>
>     The message says to try setting
>     machdep.moea64_allocated_bpvo_entries,
>     but this is apparently read-only. I've attached a screenshot of the
>     stacktrace.
>

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<html>
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    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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  <body>
    Hello,<br>
    <br>
    I do not have a way to consistently reproduce this. I was finally
    able to get through recompiling all of the installed ports before I
    was able to test this.<br>
    <br>
    Should this show up via sysctl? Because it does not:<br>
    sysctl machdep.moea64_bpvo_pool_size<br>
    sysctl: unknown oid 'machdep.moea64_bpvo_pool_size'<br>
    <br>
    Should I be able to set this in /boot/loader.conf?<br>
    <br>
    I did try setting it at boot. I'm not sure it did anything though.
    Nothing in dmesg.<br>
    <br>
    The VM has 12 threads and 16GB of memory running 13.1-RELEASE-p2.<br>
    <br>
    Maybe this is a new option in CURRENT?<br>
    <br>
    <div class="moz-cite-prefix">On 9/27/22 11:54, Alfredo Dal'Ava
      Júnior wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAOpTx7G0faPob9yO5Z_DtDLeipaAsc9R2oSmnoRd8PU43MRDhw@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">
        <div><br>
        </div>
        <div>Hi Cameron,</div>
        <div><br>
        </div>
        <div>In the loader prompt I type:<br>
        </div>
        <div><br>
        </div>
        <div>set machdep.moea64_bpvo_pool_size=655360</div>
        <div>boot<br>
        </div>
        <div><br>
        </div>
        <div>How are you testing it? What's the FreeBSD version and how
          much memory do you have on it? As reference I tested it on VMs
          with 64GB of RAM in the past. </div>
        <div><br>
        </div>
        <div>[]'s</div>
        <div>Alfredo<br>
        </div>
      </div>
      <br>
      <div class="gmail_quote">
        <div dir="ltr" class="gmail_attr">On Tue, Sep 27, 2022 at 2:41
          PM Cameron Berkenpas &lt;<a href="mailto:cam@neo-zeon.de"
            moz-do-not-send="true" class="moz-txt-link-freetext">cam@neo-zeon.de</a>&gt;
          wrote:<br>
        </div>
        <blockquote class="gmail_quote" style="margin:0px 0px 0px
          0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello,<br>
          <br>
          When recompiling my ports, I started getting periodic crashes
          on a VM <br>
          running on POWER9.<br>
          <br>
          "bpvo pool exhausted".<br>
          <br>
          The message says to try setting
          machdep.moea64_allocated_bpvo_entries, <br>
          but this is apparently read-only. I've attached a screenshot
          of the <br>
          stacktrace.<br>
        </blockquote>
      </div>
    </blockquote>
    <br>
  </body>
</html>

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