Does anybody know if the 30% performance reduction would apply to Macbook pros from within the past 2 years?
Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
191–200 of 567 posts
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#192Earlier quoted context omitted.
So this is evil for virtualization hosting, which is the major enterprise application for Intel chips. Hosting on bare metal will become more attractive. Too bad you can't long OVH and Hetzner.
For some reason I can’t reply to ‘chrisper’ but I think ‘api’ is referring to going long in the stock market. https://www.investopedia.com/terms/l/long.asp
> For some reason I can’t reply to ‘chrisper’
HN doesn't let you do this to new comments to avoid back-and-forth commenting that is typical in flamewars.
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#193Earlier quoted context omitted.
Unless the advance scheduling is completely binding, I don't see why that should sidestep insider trading. What's to stop these guys from always having a cascading series of sells and buys 6 mo. in advance, and just cancelling them?
What, they are never allowed to sell shares then? There are constantly bugs being found in major software and hardware.
Surely this is a material design defect that anyone would expect to hurt Intel's business in a very significant way.
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#194What started as speculation about recent kernel developments has really turned into a shitshow for Intel. I can't imagine they thought that these massive changes would get through without anyone finding out. However, there really isn't any other better option for Intel, so it seems they are in a lose lose situation with no way out. Or at least a way out that doesn't involve them going bankrupt trying to repair the damage.
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#195Earlier quoted context omitted.
As I mentioned in the other thread yesterday database and database like applications are going to be hit particular hard. Even more so on fast flash storage. Double whammy compared to apps just doing network IO. And while databases try to minimize the number of syscalls they still end up doing a lot of them for read, writeout, flush.
Don't flash devices use nvme (eg userspace queues) now and avoid the kernel all together for read and write operations? Shouldn't they have no impact?
Not by default they don't. That only works if you're willing to dedicate that entire physical drive to a single application anyway.
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#196I'm worried about the performance impact on low end intel chips like Atom/Celeron found in Chromebooks.30% hit will make computing on those platforms miserable. Talking about chromeOS, is there any speculation about the impact of bug? Does it's hardened sand-boxing techniques put it in a better position even if KASLR is compromised?
The bug isn't really KASLR, it's more about reading kernel memory from userspace through side channel attacks of speculative execution. KASLR is/was the cover for the kernel patches, to avoid disclosing the real bug.
The comment in linux kernel mailing list, does pin point attacks using 'speculative execution' but isn't access to kernel memory space by any means a potential hazard to the security depending upon KASLR?
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#197Earlier quoted context omitted.
Superficially, it seems like the performance hit mostly scales with IOPS or transactions per second, which might have some pretty serious implications for performance/dollar in the kinds of intensive back-end applications where Intel currently dominates and AMD is trying to make inroads with EPYC.
It has very little to do with what kind of syscalls (I/O or other kinds) and all to do with how many syscalls a given application makes per given time period. Compute bound applications are already avoiding syscalls in their hotter parts. This will mostly be a blow to databases, caching servers and other such I/O limited applications.
In other words, don't worry - pretty much all the key performance bottlenecks most of us deal with at work will be getting tighter, but at least our video games will still run OK.
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#198> AMD shares surged as much as 7.2 percent to $11.77 Wednesday. Intel fell as much as 3.8 percent, the most since April, to $45.05. An Intel spokesman declined to comment. I have no real context for this, but is 7.2% considered a "soar"? And a 3.8% decrease seems like kind of not a lot, considering what's fucking happening here.
A 7.2% rise intraday is pretty big, especially for traders holding leveraged positions. If you're comparing to crypto markets then no, but generally speaking yes.
Thanks!
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#199This is a clusterf /big deal. Beyond the security implications, it means that all companies paying for computing resources will have to pay roughly 30% more overnight on cloud expenses for the same amount of CPU, assuming that they can just scale up their infrastructure. I know that bugs happen and that there was nothing intentional on this one, but at times like this is hard to held at bay the temptation of claiming…
> all companies paying for computing resources will have to pay roughly 30% more overnight on cloud expenses Well, if I rent a VPS with x performance, I still expect x performance after this flaw is patched. The company providing the virtual machine will perhaps have to pay 30% more to provide me with the same product I've been getting. Since most VPS offerings arbitrage shared resources, this will not increase costs…
But all you are ever getting with vps offerings is a description of the number of cpus and amount of ram and suchlike. I haven't seen vps offerings that say "x" chips yield "y" performance. Granted it is sort of implied that the hardware meets certain expectations but there isn't any guarantee. I was just now reading the TOS for AWS just to check and so far as I can tell they aren't guaranteeing any kind of specific performance.
Re: Intel Confronts Potential ‘PR Nightmare’ With Reported Chip Flaw
#200What started as speculation about recent kernel developments has really turned into a shitshow for Intel. I can't imagine they thought that these massive changes would get through without anyone finding out. However, there really isn't any other better option for Intel, so it seems they are in a lose lose situation with no way out. Or at least a way out that doesn't involve them going bankrupt trying to repair the da…
> going bankrupt trying to repair the damage.
I think you took it a bit too far. May be, I am missing something. Is it really that bad?