From nobody Sun Oct 9 01:28:54 2022 X-Original-To: questions@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4MlPbF6Bkkz4V8mX for ; Sun, 9 Oct 2022 01:29:13 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: from mail-il1-x12c.google.com (mail-il1-x12c.google.com [IPv6:2607:f8b0:4864:20::12c]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4MlPbD4jBJz3q3y for ; Sun, 9 Oct 2022 01:29:12 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: by mail-il1-x12c.google.com with SMTP id h18so4236175ilh.3 for ; Sat, 08 Oct 2022 18:29:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=wN1yEuU8HcigmyBCzHNzznGVNjEkU3bOI7kLCO3fdVs=; b=KwNvLeEcIF1G/vJNJKVbc6ptTa0CBO56vFutONlXEnBW739YZQfSlK3+WePD3v6xgT 9yGWgqzbITp/Jsw6o7C/njZi0ek6uBS91+6w4anpcPBHMRwTlx9y2OQSpXIzI0dzVcQC PgJhH8waQZny2hJjYXmso72OgoMRp2DQO4HmktoIEDNz/GtaiGoGrKdb0p2uUhk3WyEB 9/RC3INqcR98fb9UDwiEgqdcYyMe1fHPrf30mGfZ40gYVJxhOaUGHV7pLeEqbUC9yxg+ Ozvl8P0WNpkKlUIJhJdv8U6r/YtaOS6wl4FSpUSJfYNGtUayVHt5KmIhqGUnwxllN6x/ 8dTg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=wN1yEuU8HcigmyBCzHNzznGVNjEkU3bOI7kLCO3fdVs=; b=hGotUmHwb89JaneYKqn9SujFTwtZ0PExc8STJnuFEw77BAK50fTH8YO6eL4zbFIUOs YYOKB9g+f2jFlePeYhERpjD30f+4ULJv8/0H6L4mGTJa8kTcCqo3tCyEdDrJs5ys5rE2 u/zNgs41HR0pu8eCgu3gR1N/bfuq/Gdfy69OBv/62zs9+Vxc2shwvaJ3Bl9wHVeLmLYf YfY90Ybacujx0E6+aAUa9UiUUDuiNLYKdH6cs99Wmnzgml5Sq6G5ueNt2ACq8JD1WUFq ZdRsZo6nMhVX9KSW1pKl0URDNey1t0EQY7Mm0BussTB6Xw6I3Uy0oR+du7RcycXVA1Ep LiqA== X-Gm-Message-State: ACrzQf1yu17XFzqFGTAAtgVe4pnO04JG3m0BvKhbiU21aokPmN6emLSr JipdHfkaBtza4OTGzYDsbSpi0MP6QgaFQxa3gDlQZ5mU X-Google-Smtp-Source: AMsMyM4cx7dzunxqDiwzE4Hkr2c7Qop06dTnmtqktOUoE9A/OY1BVcKICHOUQQWuHgQLsneOyMTS6x6xwZnXAGoHjVQ= X-Received: by 2002:a05:6e02:1a0f:b0:2f9:6dcb:c451 with SMTP id s15-20020a056e021a0f00b002f96dcbc451mr5908336ild.290.1665278950230; Sat, 08 Oct 2022 18:29:10 -0700 (PDT) List-Id: User questions List-Archive: https://lists.freebsd.org/archives/freebsd-questions List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-questions@freebsd.org X-BeenThere: freebsd-questions@freebsd.org MIME-Version: 1.0 References: <20220922180626.GB79310@darkbeer.org> <20220924070708.GA48911@darkbeer.org> In-Reply-To: From: Kevin Oberman Date: Sat, 8 Oct 2022 18:28:54 -0700 Message-ID: Subject: Re: Disabling CPUs To: Ian Smith Cc: questions@freebsd.org Content-Type: multipart/alternative; boundary="00000000000047d12005ea8ff831" X-Rspamd-Queue-Id: 4MlPbD4jBJz3q3y X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20210112 header.b=KwNvLeEc; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of kob6558@gmail.com designates 2607:f8b0:4864:20::12c as permitted sender) smtp.mailfrom=kob6558@gmail.com X-Spamd-Result: default: False [-3.68 / 15.00]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.99)[-0.992]; NEURAL_HAM_LONG(-0.99)[-0.990]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; FORGED_SENDER(0.30)[rkoberman@gmail.com,kob6558@gmail.com]; R_SPF_ALLOW(-0.20)[+ip6:2607:f8b0:4000::/36]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20210112]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[questions@freebsd.org]; ARC_NA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2607:f8b0:4864:20::12c:from]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US]; MLMMJ_DEST(0.00)[questions@freebsd.org]; DKIM_TRACE(0.00)[gmail.com:+]; MID_RHS_MATCH_FROMTLD(0.00)[]; FREEMAIL_FROM(0.00)[gmail.com]; FROM_NEQ_ENVFROM(0.00)[rkoberman@gmail.com,kob6558@gmail.com]; RCPT_COUNT_TWO(0.00)[2]; MIME_TRACE(0.00)[0:+,1:+,2:~]; RCVD_TLS_LAST(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; RCVD_COUNT_TWO(0.00)[2] X-ThisMailContainsUnwantedMimeParts: N --00000000000047d12005ea8ff831 Content-Type: text/plain; charset="UTF-8" On Sat, Oct 8, 2022 at 5:54 PM Kevin Oberman wrote: > On Fri, Oct 7, 2022 at 9:56 AM Ian Smith wrote: > >> On 7 October 2022 2:05:32 pm AEDT, Kevin Oberman >> wrote: >> >> [...] >> >> > I've been silent while waiting for the additional memory since I >> > could not >> > do any real work with only 8G. It finally arrived and I installed it >> > yesterday. I'm very happy to say that my VirtualBox VMs seem to now >> > be >> > working correctly. I've done limited testing, but seen no problems to >> > this >> > point. Much better than an instant system panic when a VM finished >> > loading. >> > >> > On the plus side, with "cpuset -s 1 -l 0-3", things seem reasonably >> > stable. >> > That means no crashes with many hours of use and a lot of >> > compilations. >> > With only 4 cores, it's not a fast as I had hoped, but I will be >> > benchmarking soon. >> >> Hi Kevin, three questions if I may: >> >> I may have missed it, but did you wind up testing sched_ULE vs 4BSD? >> > > cpuset(8) only works with ULE, so that is what I am running. So far I have > not seen the interactivity issues that caused me to move to 4BSD over a > decade ago. > > >> Is that 4 cores including HT, or not? >> > > Yes, 2 cores and 4 threads. Sorry to have failed to make that clear. My > CPU has 2 P cores and 8 E cores. It has never crashed when running the 2 P > cores, but I had one crash running the 8 E cores. Now that I have a > stable system, I may try switching back to just the E cores as they seem > to provide almost double the performance of the 2 P cores. Oddly, while > using rsync to move a big batch of files from my backup disk to the new > system after cpuset, I saw 0-3 busy, as I would expect, but one E core was > running at about 30% the entire time, as well. I have no idea why. > >> >> And how much power does your new Thinkpad T16 use on battery, say, at >> idle and 'fairly busy' (acpiconf -i0) ? >> > > With the 2 P cores I see about 1.1W idle. Wow! While compiling Firefox > (all threads running at over 95%), I see about 25.3W. With a 52500 mWh > battery, it will last a long time. > With the 9 E cores I see about 10.4W idle. Wow, the other way. While > compiling Firefox, I saw a momentary spike of 35W, but it varied between > 20.5 and 27.8 W with occasional hits up to 31 W. The E core power > consumption seems far more inconsistent thaa the P cores. compile time with > P cores was 1:29 while it was only :50 with the 8 E cores. > > In both cases I had my Mate desktop running. > > The L15 was a piece of junk where I learned my lesson about budget > systems. The ABS case started cracking at both hinges after about a year > of use. That was after about 9 months of trying to get it working properly > after Lenovo had replaced the motherboard and the disk. and, finally, the > keyboard. I think the MB was fine, but was the obvious suspect for system > lock-ups in POST. Took my a while to track it down to the keyboard and the > tech who swapped it out didn't believe that the keyboard was the problem > but agreed to humor me. As a result, by the time the case started cracking, > the warranty had expired. If I had been willing to give up the TrackPoint, > I would have bought a non-Lenovo/IBM for the first time ever. > > The T16 is built like a T series with a metal frame and feels solid. My > T16 is all SSD. Yes, it's heavier. The L15 flexed noticeably with no frame, > just the MB, battery, and disk attached to the ABS case. > > cheers, Ian >> > Sigh. Less than 5 minutes after I sent my reply, the "all E core" system panicked. The usual vfs/ufs crash in ufs_lookup_ino. I'm back to all P core" as that has never cashed. So far I have seen no activity on my ticket. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 --00000000000047d12005ea8ff831 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Sat, Oct 8, 2022 at 5:54 PM = Kevin Oberman <rkoberman@gmail.co= m> wrote:
On Fri, Oct 7, 2022 a= t 9:56 AM Ian Smith <smithi@nimnet.asn.au> wrote:
On 7 October 20= 22 2:05:32 pm AEDT, Kevin Oberman <rkoberman@gmail.com> wrote:

[...]

=C2=A0> I've been silent while waiting for the additional memory sin= ce I
=C2=A0> could not
=C2=A0> do any real work with only 8G. It finally arrived and I installe= d it
=C2=A0> yesterday. I'm very happy to say that my VirtualBox VMs seem= to now
=C2=A0> be
=C2=A0> working correctly. I've done limited testing, but seen no pr= oblems to
=C2=A0> this
=C2=A0> point. Much better than an instant system panic when a VM finish= ed
=C2=A0> loading.
=C2=A0>
=C2=A0> On the plus side, with "cpuset -s 1 -l 0-3", things se= em reasonably
=C2=A0> stable.
=C2=A0> That means no crashes with many hours of use and a lot of
=C2=A0> compilations.
=C2=A0> With only 4 cores, it's not a fast as I had hoped, but I wil= l be
=C2=A0> benchmarking soon.

Hi Kevin, three questions if I may:

I may have missed it, but did you wind up testing sched_ULE vs 4BSD?
=C2=A0
cpuset(8) only works with ULE, s= o that is what I am running. So far I have not seen the interactivity issue= s that caused me to move to 4BSD over a decade ago.=C2=A0
<= div>=C2=A0
Is that 4 cores including HT, or not?
=C2=A0
Yes, 2 cores and 4 threads. Sorry to have failed to make that c= lear. My CPU has 2 P cores and 8 E cores. It has never crashed=C2=A0 when r= unning the 2 P cores, but I had one crash running the 8 E cores.=C2= =A0Now that I have a stable system, I may try switching back to = just the E cores as they=C2=A0 seem to provide almost double the performanc= e of the 2 P cores. Oddly, while using rsync to move a big batch of files f= rom my backup disk to the new system after cpuset, I saw 0-3 busy, as I wou= ld expect, but one E core was running at about 30% the entire time, as well= . I have no idea why.

And how much power does your new Thinkpad T16 use on battery, say, at idle = and 'fairly busy' (acpiconf -i0) ?

<= div style=3D"font-family:tahoma,sans-serif;font-size:small">With=C2=A0 the = 2 P cores I see about 1.1W idle. Wow! While compiling Firefox (all=C2=A0 th= reads running at over 95%), I see about 25.3W. With a 52500 mWh battery, it= will last a long time.
With the 9 E cores I see about 10.4W idle. Wow, the other wa= y. While compiling Firefox, I saw a momentary spike of 35W, but it varied b= etween 20.5 and 27.8 W with occasional hits up to 31 W. The E core power co= nsumption seems far more inconsistent thaa the P cores. compile time with P= cores was 1:29 while it was only :50 with the 8 E cores.

In both cases I had my M= ate desktop running.

The L15 was a piece of junk where I learned my lesson about bud= get systems.=C2=A0 The ABS case started cracking at both hinges after about= a year of use. That was after about 9 months of trying to get it working p= roperly after Lenovo had replaced the motherboard and the disk. and, finall= y, the keyboard. I think the MB was fine, but was the obvious suspect for s= ystem lock-ups in POST. Took my a while to track it down to the keyboard an= d the tech who swapped it out didn't believe that the keyboard was the = problem but agreed to humor me. As a result, by the time the case started c= racking, the warranty had expired. If I had been willing to give up the Tra= ckPoint, I would have bought a non-Lenovo/IBM for the first time ever.

The T16 is built = like a T series with a metal frame and feels solid. My T16 is all SSD. Yes= , it's heavier. The L15 flexed noticeably with no frame, just the MB, b= attery, and disk attached to the ABS case.

cheers, Ian
Sigh. Less than 5 min= utes after I sent my reply, the=C2=A0"all E core&quo= t; system panicked. The usual vfs/ufs crash in ufs_lookup_ino. I'm back= to all P core" as that has never cashed. So far I have seen no activi= ty on my ticket.
--
=
Kevin Oberman, Part time kid herder and retired Netwo= rk Engineer
E-mail: rkoberman@gmail.com
PGP Fingerprint: D03FB98AFA78E3B= 78C1694B318AB39EF1B055683
--00000000000047d12005ea8ff831--