ChanServ changed the topic of #asahi-dev to: Asahi Linux: porting Linux to Apple Silicon macs | Non-development talk: #asahi | General development | GitHub: https://alx.sh/g | Wiki: https://alx.sh/w | Logs: https://alx.sh/l/asahi-dev
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<marcan> jannau: oh you got an M2 Mini already?
<marcan> nice
<marcan> I was wondering if I'd have to get one due to the DCP nonsense but I see you're on it already :)
<marcan> (will probably still get one as the third server node though)
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<jannau> marcan: yes. dcp sillyness is not playing nice so far
<jannau> the m2 pro mac mini seems to use the same sillyness judging by the adt although apple doesn't advertise 3 thunderbolt/dp-altmode displays
<jannau> this might be part of the reason why apple stopped bringing up hdmi in iboot
<jannau> this seems to be sufficiently similar to the hdmi handling on the macbook pros so that we should be able to enable those too once this is working
<marcan> makes sense
<marcan> sounds like this is going to be the One New Annoying Thing this time around then
<marcan> (last time it was MTP)
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<Ry_Darcy> Just read a comment on heise.de and looked at the youtube video regarding the (bad, compared to the M1 Mini) performance of the NVME 256GB performance on the M2 Mini - https://www.youtube.com/watch?v=m1XWHFkHgp8 from 4 min 50 sec. if you can stand his waffling and marketing...
<Ry_Darcy> This was the amount of NVME storage (256GB) I wanted to buy with the M2 Mini btw. Any thoughts?
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<ChaosPrincess> What are you gonna use the machine for
<kettenis> if you are planning to run Asahi, I would strongly recommend at least 512GB
<Ry_Darcy> I am not a gamer/developer/hoarder of videos or photos. Being a Mainframer, I am used to Mainframe access/response times. Hence te need for speed when I am paying my bills or looking at the news...
<Ry_Darcy> te = the
<j`ey> lol
<Ry_Darcy> My current M1 Mini has 512GB. I am having second thoughts now vis-a-vis the M2 Mini. How I abhore apple...
<Ry_Darcy> The current setup is 410GB Debian, 90GB for the unmentionable.
<Ry_Darcy> I must run a FIO benchmark when I am at home this evening for posterity..
<ChaosPrincess> So, just general "office" use?
<ChaosPrincess> Then io speed shouldnt matter
<jannau> neither should the difference between m1 and m2
<ChaosPrincess> Also, isnt mainframe response times - submit batch job overnight, get results in the morning? :P
<Ry_Darcy> @Jannau agreed. But I will not settle for an underpowered NVME SSD either. Read some of the comments about the "new" NVME speeds being offered for the M2 Mini. Not impressive.
<Ry_Darcy> @ChaosPrincess basically, home office use and the occasional kernel compile. Light use, if you would.
<Ry_Darcy> That was in the 70's lady. Not any more.
<ChaosPrincess> Anyway, i only seen the slides in that video and havent heard his commentary (forgot headphones today), but if it is sequential - then it literally does not matter
<ChaosPrincess> random low queue depth io is what affects the perf you want
<Ry_Darcy> Frank Zappa's "cheepnis" comes to mind. Fool the punter, make her/him think he is getting more for less. Oh dear.
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<ChaosPrincess> Personally, i wouldnt buy a machine with less than 512gb even if it has a replaceable ssd
<ChaosPrincess> and apple stuff is soldered, which is technically replaceable, but you won't do it
<Ry_Darcy> Just as well you did not hear his nattering. There are other sources for this news however.
<ChaosPrincess> and yes, the 8/256 model seems like a "we want to advertise low prices" play
<Ry_Darcy> I am not a great collector of things, hence my modest (256GB) requirements.
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<ChaosPrincess> I think that if you dont work with video or similar disk filler, you won't notice the perf difference
<Ry_Darcy> Tis the principle...
<Ry_Darcy> To put it in a simpler way - I do not want to go backwards.
<j`ey> jannau: yay joerg applied the reserved-memory stuff
<maz> did someone just quite FZ here?
<maz> quote*
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<j`ey> did you FZ-sense tingle
<j`ey> *your
<maz> it did! and Cheepnis is an awesome tune!
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<jannau> I've seen. 4 patches less and I can start thinking of submitting support for reserved regions with translation
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<jannau> kettenis: 1gb ethernet on the m2 mini is tg3 as expected
<kettenis> so I made the right decision to get the 10gb ethernet ;)
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<Ry_Darcy_> As threatened this morning, here are the FIO results for my 512GB storage. Apple M1 Mini (2020) 16GB.
<axboe> Ry_Darcy_: have your job file too? curious on the m2 max for comparison
<Ry_Darcy_> On the way.. Few minutes...
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<Ry_Darcy_> Here we are - https://paste.debian.net/1268427/
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<axboe> just realized we didn't have crc32c enabled on osx for arm64...
<Ry_Darcy_> At least that is something. You can buy me a cognac in a different life.. :)
<axboe> for?
<Ry_Darcy_> Nothing special.
<axboe> now I'm pondering if the cache bypass works on osx
<axboe> getting ~16GB/sec on the m2 max
<Ry_Darcy_> Best of luck.
<axboe> 15.8GB/sec F_NONCACHE, 16.3GB/sec normal buffered
<axboe> oh well, will test once linux boots on it
<Ry_Darcy_> @axboe - 15.8GB/sec F_NONCACHE, 16.3GB/sec normal buffered... did you use FIO for this? If yes, could you share the FIO job file please?
<axboe> of course I used fio :)
<axboe> this is what I ran:
<axboe> ./fio --name=test --time_based --ramp_time=5s --timeout=30s --bs=256k --rw=read --direct=1 --size=4g
<axboe> but googled F_NONCACHE, and it's not zero copy, it just reduces caching effects
<axboe> so suspect both are essentially buffered, just !F_NONCACHE not persistently so
<axboe> maybe rdisk would be better, I know very little about osx
<Ry_Darcy_> @axboe Thanks for the information. I will also have to consult the search engine of my choice also..
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<nicolas17> Ry_Darcy: you know axboe *made* fio, right? ;)
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