Date: Wed, 22 Mar 2023 13:42:32 -0400 From: Karl Denninger <karl@denninger.net> To: freebsd-hackers@freebsd.org Subject: Re: Periodic rant about SCHED_ULE Message-ID: <b29444be-1146-185b-d4cc-d422f9bcdd8c@denninger.net> In-Reply-To: <27f46bc2-54f8-f5aa-79ca-184e86d185d8@m5p.com> References: <202303221710.32MHAhe9047582@gndrsh.dnsmgr.net> <27f46bc2-54f8-f5aa-79ca-184e86d185d8@m5p.com>
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On 3/22/2023 13:37, George Mitchell wrote:
> On 3/22/23 13:10, Rodney W. Grimes wrote:
>> [...]
>> I dont even try ULE any more. I just used 4BSD, as did bde@freebsd.org,
>> ULE seems to suck when your have interactive use and compute bound on
>> the same box. I have seen interactive in the past take seconds to
>> echo a command. IIRC ULE and zfs in a memory contrained environment
>> dont play nicely togeather either.
>>
>> +1 on the return to 4BSD as the default scheduler
>>
> Thanks for the support and confirming I am not crazy! -- George
>
Am I correct that toggling between these without a kernel build (or even
at runtime) is not possible? Been a minute since I've cared.... :-)
--
Karl Denninger
karl@denninger.net
/The Market Ticker/
/[S/MIME encrypted email preferred]/
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<div class="moz-cite-prefix">On 3/22/2023 13:37, George Mitchell
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:27f46bc2-54f8-f5aa-79ca-184e86d185d8@m5p.com">On 3/22/23
13:10, Rodney W. Grimes wrote:
<br>
<blockquote type="cite">[...]
<br>
I dont even try ULE any more. I just used 4BSD, as did
<a class="moz-txt-link-abbreviated" href="mailto:bde@freebsd.org">bde@freebsd.org</a>,
<br>
ULE seems to suck when your have interactive use and compute
bound on
<br>
the same box. I have seen interactive in the past take seconds
to
<br>
echo a command. IIRC ULE and zfs in a memory contrained
environment
<br>
dont play nicely togeather either.
<br>
<br>
+1 on the return to 4BSD as the default scheduler
<br>
<br>
</blockquote>
Thanks for the support and confirming I am not crazy! --
George
<br>
<br>
</blockquote>
<p>Am I correct that toggling between these without a kernel build
(or even at runtime) is not possible? Been a minute since I've
cared.... :-)<br>
</p>
<div class="moz-signature">-- <br>
Karl Denninger<br>
<a href="mailto:karl@denninger.net" class="moz-txt-link-freetext">karl@denninger.net</a><br>
<i>The Market Ticker</i><br>
<font size="-2"><i>[S/MIME encrypted email preferred]</i></font></div>
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