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Staro 15.05.2019., 15:18   #301
Mladenxy
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Mislio sam na neki grafikon ili video koji bi pokazao testove igara prije i poslije zakrpe, koji bi potvrdio gubitak od 10% u gamingu.
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Staro 15.05.2019., 15:34   #302
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GTA V, Meltdown/Spectre protection enabled:



Frames Per Second (Higher is better) Min, Max, Avg

Pass 0, 12.466310, 87.951523, 67.537834

Pass 1, 35.587948, 102.294464, 77.057365

Pass 2, 45.975742, 123.643021, 79.567863

Pass 3, 44.063927, 114.885742, 86.587761

Pass 4, 22.912081, 130.247345, 77.674034



GTA V, Meltdown/Spectre protection disabled:



Frames Per Second (Higher is better) Min, Max, Avg

Pass 0, 18.301443, 94.711319, 76.394928

Pass 1, 49.353958, 135.707306, 87.262985

Pass 2, 49.573666, 136.217514, 88.964317

Pass 3, 55.602509, 132.006226, 101.361748

Pass 4, 25.132448, 149.900314, 85.941391



Ghost Recon Wildlands, Meltdown/Spectre protection enabled:



FPS:Average: 50.48 Min: 34.72 Max: 56.16

GPU peak temp: 74

CPU usage: Average: 46.0% Min: 36.7% Max: 59.5%

GPU usage: Average: 76.1% Min: 65.8% Max: 86.1%

RAM usage: Average: 2.8 GB Min: 2.7 GB Max: 2.9 GB



Ghost Recon Wildlands, Meltdown/Spectre protection disabled:



FPS: Average: 54.50 Min: 45.14 Max: 58.59

GPU peak temp: 74

CPU usage: Average: 42.7% Min: 32.3% Max: 52.3%

GPU usage: Average: 81.9% Min: 62.5% Max: 92.3%

RAM usage: Average: 2.7 GB Min: 2.6 GB Max: 2.8 GB



It may be worth noting the higher CPU and lower GPU usage in Ghost Recon Wildlands with Meltdown/Spectre patches enabled, which may indicate TLB flushing is eating CPU cycles and bottlenecking the GPU in this scenario.



TL;DR

Meltdown/Spectre protection patches hit the performance of open-world games particularly hard on pre-Haswell CPUs.






Win10 Unpatched Win10 Meltdown Patch Win10 Meltdown + Microcode Patch
The Witcher 3, Ultra, No HairWorks 139.8fps 128.3fps 126.6fps
Rise of the Tomb Raider, Very High, DX12 121.6fps 117.2fps 121.6fps
Far Cry Primal, Ultra 128.4fps 127.0fps 126.2fps
Crysis 3, Very High 129.3fps 129.2fps 126.8fps
Ashes of the Singularity, CPU Test 35.3fps 35.5fps 35.6fps
Assassin's Creed Unity, Ultra High 131.1fps 131.2fps 130.3fps
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Staro 15.05.2019., 16:48   #303
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Ovdje su testirali i razlike su bile u jednoj igri, sa drugim intelom čak ni ni u toj jednoj igri...par postotaka razlike.

https://youtu.be/LC1WuKdPVCQ
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Staro 15.05.2019., 17:23   #304
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Ima i razlike koji je OS.
Win 10 navodno bolje podnosi Spectre/Meltdown patcheve.
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Staro 15.05.2019., 17:31   #305
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Ovdje su testirali i razlike su bile u jednoj igri, sa drugim intelom čak ni ni u toj jednoj igri...par postotaka razlike.

https://youtu.be/LC1WuKdPVCQ
to ti je ova drugi dio rezultata sto sam stavio post ranije(Win10 Unpatched Win10 Meltdown Patch Win10 Meltdown + Microcode Patch), to je testirano 10.1.2018., ovo iznad gdje su osjetnije razilke je test iz 3.mj.2019. sa dodatnim zakrpama(1809 ver. win10)
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Staro 15.05.2019., 19:06   #306
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Mislim da je Mladenxy pitao za utjecaj Retpoline patch-a.
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Staro 16.05.2019., 13:18   #307
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Intel Tried to Bribe Dutch University to Suppress Knowledge of MDS Vulnerability
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Dutch publication Nieuwe Rotterdamsche Courant reports that Intel offered to pay the researchers a USD $40,000 "reward" to allegedly get them to downplay the severity of the vulnerability, and backed their offer with an additional $80,000. The team politely refused both offers.
Izvor: TechPowerUp
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Staro 16.05.2019., 13:21   #308
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A i jesu se isprsili s ponudom
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Staro 16.05.2019., 14:17   #309
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Trebali su im travuljagu umjeso para ponudit, bolje bi prosli
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Staro 16.05.2019., 14:21   #310
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Treba pričekati da netko relevantan napravi nove testove, po ovim prethodnim zakrpama nije se izgubilo praktički ništa za kućnog korisnika.

Osobno nisam ništa osjetio a windowsi se krpaju redovno kao i biosi na zadnje verzije.

https://www.youtube.com/watch?v=_qZksorJAuY
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Staro 16.05.2019., 15:40   #311
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Intel i plave kuverte?
Ne mogu vjerovat.
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Staro 16.05.2019., 16:14   #312
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Treba pričekati da netko relevantan napravi nove testove, po ovim prethodnim zakrpama nije se izgubilo praktički ništa za kućnog korisnika. Osobno nisam ništa osjetio a windowsi se krpaju redovno kao i biosi na zadnje verzije.
Noviji hardver još i relativno dobro podnosi sve te zakrpane peripetije, ali nažalost Sandy, Ivy, Haswell i Broadwell znaju pokleknuti, a još uvijek se koriste.
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Staro 16.05.2019., 16:20   #313
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Ali i na novijima su razlike vece nakon 1809 ak sam dobro skuzio piskaranja po netu jer su dodatne zakrpe tad metnuli

Kroz koji tjedan ce se znat sto je s ovim zadnjim failom, kako te zakrpe utjecu na perf.
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Staro 16.05.2019., 18:59   #314
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Kažu ovdje

https://www.pcgamesn.com/intel/zombi...on-performance

Intel’s benchmarks suggest only a marginal decrease in within some tasks while Zombieload mitigations are in place.
Within the company’s in-house testing, a Core i9 9900K with HyperThreading enabled drops 3% performance in WebXPRT 3 testing. At best, it gained 1% within SPECint_rate_base 2017 (1 copy) testing.

Problem je ovo gašenje HT-a dok ne izdaju mikrokodove.
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Staro 16.05.2019., 19:29   #315
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Je, a intelovim in-houe testiranjima je baš za vjerovati kao objektivnima i neovisnima
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Staro 16.05.2019., 22:19   #316
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Kak god se okrene daleko je ovo od zajebancije koje će se "riješiti" hrpom zakrpa, koje pak same po sebi nisu nikakvo rješenje - pogotovo, ako se gubi dobar dio funkcionalnosti.
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The full mitigation, which includes disabling hyper-threading, prevents information leakage across threads and when transitioning between kernel and user space, which is associated with the MDS vulnerabilities for both local and remote (web) attacks. Testing conducted by Apple in May 2019 showed as much as a 40 percent reduction in performance with tests that include multithreaded workloads and public benchmarks. Performance tests are conducted using specific Mac computers. Actual results will vary based on model, configuration, usage, and other factors.
Izvor: Apple
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Staro 16.05.2019., 23:39   #317
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Za taj dio me zaboli Nek mi ne diraju igre
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Staro 16.05.2019., 23:57   #318
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intel in house benchmark hahaha, pa pokusali su potplatiti ekipu da se ne prosiri vijest, sto onda tek vele svojima koji su im na legalnoj platnoj listi...
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Staro 18.05.2019., 19:17   #319
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The Performance Impact of MDS / Zombieload: The overall cost of Spectre/Meltdown/L1TF/MDS
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The Intel systems all saw about 16% lower performance out-of-the-box now with these default mitigations and obviously even lower if disabling Hyper Threading for maximum security. The two AMD systems tested saw a 3% performance hit with the default mitigations. While there are minor differences between the systems to consider, the mitigation impact is enough to draw the Core i7 8700K much closer to the Ryzen 7 2700X and the Core i9 7980XE to the Threadripper 2990WX.
Izvor: Phoronix
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Staro 21.05.2019., 18:44   #320
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Evo nekaj testova sa isključenim HT-om.

https://www.youtube.com/watch?time_c...&v=a8yXqsfXWcM
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Staro 23.05.2019., 21:31   #321
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Windows 10 Security Patch Slowed Intel Core i9 9900K in Pix4D, Metashape & RealityCapture
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Single patch, to address a couple of CPU vulnerabilities, caused Intel's Core i9 9900K processor to take 2 to 11% longer to process image sets in these photogrammetry applications. This is not the first update that has addressed such weaknesses in modern CPUs, so I wouldn't be surprised if the overall impact from those cumulative patches is even bigger. Some applications might be affected even more heavily, while others could see little or no difference - and of course, different CPUs may be affected more or less with each discovered vulnerability and subsequent patch. I look forward to seeing if this performance drop on the 9900K (and related models) impacts what CPUs are the best for photogrammetry moving forward, and we will have articles covering that topic in the coming days.
Spectre/Meltdown/L1TF/MDS Mitigation costs on an Intel Dual Core + HT Laptop
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Here are some benchmarks of a Lenovo ThinkPad with Core i7 Broadwell CPU looking at those mitigation costs, when using a Core i7 5600U with two physical cores plus Hyper Threading.
The default/out-of-the-box mitigations dropped the performance by 18% or 25% when disabling Hyper Threading.
ZombieLoad Mitigation Costs For Intel Haswell Xeon, Plus Overall Mitigation Impact
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When looking at the current costs of all mitigations to date combined, that's a 13% hit using the same set of benchmarks carried out for the recent Xeon/EPYC comparison a few days back. If also disabling Hyper Threading, it equates to about a 19% hit.
Izvor: Puget Systems i Phoronix
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Staro 25.05.2019., 17:05   #322
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Ako bude ovako biti će totalna katastrofa za i7 4/8 procesore a 2/4 procesori će postati totalno neupotrebljivi.

https://www.youtube.com/watch?v=O9t7u5pM1cE

Za te korisnike jedino rješenje je ne nadograđivati BIOS ali opet je upitno kao će razviti situacija nakon krpanja windowsa.
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Staro 25.05.2019., 18:50   #323
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Bojim se da bi u par godina ista stvar mogla dočekati trenutno aktualne Intelove 6C/12T i 8C/16T modele, jer primjera radi - Core i7-7700K je daleko od lošeg procesora. Nažalost, taman kad je lansiran su izašli i novi Ryzen modeli, a sve ostalo u pogledu ovih sigurnosnih propusta je samo dodatno zapečatilo sudbinu nekadašnjih high-end 4C/8T procesora. Neovisno o AMD-u i Ryzenima, Intel bi ovo kad-tad dočekalo, možda bi zabava potrajala još koju godinu, ali sustiglo bi ih svakak.
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Staro 25.05.2019., 19:28   #324
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Bude li stvarno ovako po 30% pada performansi nakon novih biosa ili nadograđenih windowsa tužbe bi morale pljuštati barem u USA. Nisu ni nvidiji gledali kroz prste sa GTX 970 i lažno predstavljenih kartica sa vramom. Vraćali su kupcima dio novaca.

Kaj se tiče i7 7700K deleko je još on pečačenja, po svim testovima dere u gamingu pogotovo kada se kloka, bez obzira na konkurenciju.
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Staro 25.05.2019., 19:39   #325
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Ma je, sve je jasno, a 7700K sam samo za primjer navel, jer vidi kaj se događa kad se sve te zakrpe nabacaju na hardver koji uopće nije za baciti. Izuzev kompletno nove arhitekture, nemaju baš puno manevarskog prostora.

Na stranu isključivo igranje, već kad se pogleda kompletna slika - igre + općenito svakodnevno korištenje računala u ostalim aplikacijama i rezultati su nažalost poražavajući.
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Staro 13.11.2019., 11:48   #326
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Citiraj:
New speculative vulnerability called ZombieLoad 2, or TSX Asynchronous Abort, has been disclosed today that targets the Transactional Synchronization Extensions (TSX) feature in Intel processors. Using this vulnerability, local attackers or malware can steal sensitive data from the operating system kernel or other processes. Performance in modern CPUs is increased through speculative execution, a feature that runs instructions in advance of knowing if they are needed or not. If they are required, the task completes faster, otherwise the data is discarded. Attacks that target this feature are called speculative execution side-channel attacks. In May 2019, new speculative execution attacks called RIDL, Fallout, and ZombieLoad were disclosed that could allow a malicious program to steal sensitive data from memory locations that normally they could not access. While microcodes and software-based protections were released to mitigate these older vulnerabilities, it was disclosed today that a new version of the ZombieLoad attacks can bypass current defenses and even affect processors in the Intel Cascade Lake CPU family.
Citiraj:
Researchers discovered two new vulnerabilities known as TPM-FAIL in Intel firmware-based TPM (fTPM) and STMicroelectronics' TPM chips that could be used by hackers to steal their targets' cryptographic keys. TPM (short for Trusted Platform Module) is a chip used as a root of trust for a device's OS that can store highly sensitive data such as security keys, protecting them from malicious tools such as implanted rootkits or malware dropped by a threat actor. TPMs can also be firmware-based solutions (fTPM) that run on separate 32-bit microcontrollers inside a CPU, as is the case of Intel processors starting with the Haswell generation (2013). The two vulnerabilities allow hackers to circumvent this security shield and steal the data stored within a TPM. Once they have their hands on your signing keys, the attackers can forge digital signatures that can be used to tamper with the operating systems or to bypass authentication on the compromised machine.
Citiraj:
Intel has disclosed a whooping 77 vulnerabilities that range from processors to graphics and even ethernet controllers. 67 of these bugs have been discovered by Intel internally, while outside sources uncovered ten. Many of these vulnerabilities are minor, though some others will have a notable impact on Intel's products. More information about these vulnerabilities is available here, with the focus of this article being a specific vulnerability called "JCC Erratum". This vulnerability impact most of Intel's recently released processors, including Coffee Lake, Amber Lake, Cascade Lake, Skylake, Whiskey lake, Comet Lake and Kaby Lake. This bug relates to Intel's ICache/ Decodes Streaming buffer, though the issue can be addressed with firmware. However, Intel's mitigations document for Jump Conditional Code Erratum states that the mitigation/workaround will impact performance by 0-4% excluding outliers, which means that even higher performance downsides in specific workloads. Phoronix is the first website to benchmark Intel's processors both with an without their JCC Erratum mitigations, finding notable performance hits in some software.
Izvor: BleepingComputer, OC3D i Phoronix

Zadnje izmijenjeno od: The Exiled. 13.11.2019. u 21:03.
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Staro 17.11.2019., 01:47   #327
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Ispada da su Intelovci žrtvovali sigurnost da bi imali brže procesore. Sad će softwaresko i microcode krpanje usporit procesore puno više nego što su dobili na brzini time što nisu staviti hardware checkove kao AMD.

Imam neki feeling da još nismo vidjeli sve i da će biti još toga...
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Staro 17.11.2019., 10:57   #328
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Te zvijeri još uvijek nisu s whitehatovskih papira pobjegle "in the wild".
Neznam šta čekaju ti zli blackhat momci, još če ispast ko bura u čaši vode.
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Staro 17.11.2019., 11:28   #329
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Bura ili ne, ali je u svakom slučaju pljuska intelu
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Staro 17.11.2019., 11:41   #330
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Definitivno pljuska ali i clickbait...nešto poput prijetnja mentorom ili supervulkanom nedjeljom poslijepodne
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