Jedna od mojih nedavnih dilema bila je: ako šifriram svoje računalo, koliko će računalne performanse morati patiti zbog toga? Hoće li biti velike razlike? Ako da, u kojim područjima? Zato sam odlučio provesti neke testove na oba svoja računala i saznati više o utjecaju TrueCrypt enkripcije na performanse računala.

Sustavi se testiraju

Testovi su rađeni na dva računala: desktop i laptop. Radna površina ima sljedeću konfiguraciju: procesor AMD Phenom II X4 905^{(AMD Phenom II X4 905)} (2,5 GHz ), matičnu ploču Gigabyte GA-MA785GT-UD3H , memoriju je Corsair XMS3 DHX 6GB DDR3 1600 MHz , Gigabyte Radeon HD6870 OC 1GB 1GB ^{(Gigabyte Radeon HD6870 OC 1GB)} DDR52^(DDR5) video karticu RunCore Pro V 2,5" SATA III SSD disk.

Za razliku od desktopa, laptop nema SSD . Opremljen je sljedećim komponentama: Intel Core2 Quad CPU Q9000 @ 2,00 GHz , 6 GB RAM-a DDR2^{(RAM DDR2)} , ATI Mobility Radeon HD 4650 i hibridni HDD - Seagate Momentus XT 500GB .

Niti jedan od sustava nema čistu instalaciju Windowsa^(Windows) . Korišteni su mnogo mjeseci i imaju sav softver koji obično koristim na njima. To je zato što sam želio naučiti kakav će učinak enkripcija imati na performanse na sustavima koji se koriste na dnevnoj bazi dulje vrijeme.

Testovi koji su napravljeni

Prvo sam izmjerio performanse na svakom sustavu, prije nego što sam izvršio enkripciju s TrueCryptom^(TrueCrypt) .

Izmjerio sam vrijeme pokretanja s najnovijom verzijom Soluta^(Soluto) . Zatim sam izmjerio opće performanse računala koristeći 64-bitnu verziju PCMark Vantage i performanse grafike i igara koristeći 3DMark Vantage Advanced .

PCMark Vantage ocjena je mjera performansi računala u nizu uobičajenih računalnih zadataka kao što su gledanje i uređivanje fotografija, videa, glazbe i drugih medija, igranja, komunikacija, produktivnosti i sigurnosti. Više o testovima koje obavlja možete saznati na ovoj stranici: značajke PCMark Vantage^{(PCMark Vantage features)} .

3DMark Vantage ocjenjuje grafičke performanse i izvodi dva grafička testa, dva CPU testa i šest testova značajki. Ako želite saznati više o testovima koje provodi napredno^(Advanced) izdanje, pogledajte ovu stranicu: Referentna ocjena video kartice za DirectX 10 u sustavu Windows^{(Video Card Benchmark for DirectX 10 on Windows)} .

Svaki test je izveden tri puta i zabilježio sam prosjek svih triju vožnji.

Zatim je pogon sustava potpuno šifriran s TrueCryptom^(TrueCrypt) i isti su testovi ponovno izvedeni, tri puta. Za svaki test su zabilježeni prosječni rezultati.

Kako enkripcija utječe na vrijeme pokretanja^{(Does Encryption Impact Boot Timings)} ?

Moje prvo pitanje bilo je o utjecaju na vrijeme pokretanja. Bio sam ugodno iznenađen primijetivši da je utjecaj bio minimalan. Na prijenosnom računalu s hibridnim tvrdim diskom pokretanje je bilo samo 5% (5 sekundi) sporije. Iznenađujuće dobar rezultat ako mene pitate.

Na radnoj površini, koja je opremljena SSD -om , nije bilo utjecaja na vrijeme pokretanja. SSD je vrlo dobro odradio svoj posao i sustav se dizao jednako brzo kao i prije.

Ovo je još jedan dokaz da ulaganje u SSD donosi stvarno dobre performanse.

Utjecaj enkripcije^(Encryption) na opće^{(General Computing)} performanse računala _^(Impact)

PCMark Vantage izvodi nekoliko testova i prosječna ocjena mu je u prosjeku 7 područja testiranja: Memorije (rad s fotografijama), TV i filmovi, Igre^(Gaming) , Glazba^(Music) , Komunikacije^{(Communications)} , Produktivnost^{(Productivity)} i HDD . Šifriranje je jako utjecalo na rezultate.

Na prijenosnom računalu zabilježeno je ukupno smanjenje od 4%, dok je na desktopu primijećeno ogromno smanjenje performansi od 15%.

Pogledao sam pojedinačne rezultate i čini se da najveći utjecaj imaju oba sustava u HDD testovima. Tu je posebno pogođen SSD koji daje 20% manje performanse.^(SSD)

U svim testovima gdje je bilo uključeno puno zapisa podataka na tvrdi disk, razlika u performansama bila je ogromna. SSD - u je u nekim testovima brzina pisanja smanjena za 30%. Međutim, hibridni tvrdi disk s prijenosnog računala bio je puno manje pogođen. Imao je smanjenje brzine pisanja, ali nikad niže od 10%.

Još jedan neobičan rezultat koji sam primijetio je da su performanse igara, kako ih je objavio PCMark Vantage , vrlo malo pogođene enkripcijom - smanjenje od oko 5%.

Utjecaj enkripcije^(Encryption) na performanse igara ^{(Gaming Performance)}_^(Impact)

3DMark Vantage Advanced^{(3DMark Vantage Advanced)} benchmark potvrdio je zaključke o igraćim performansama koje je podijelio PCMark Vantage .

Nije bilo utjecaja u svim testovima, kako na prijenosnom računalu tako i na stolnom računalu. Pad performansi bio je manji od 0,1%. Bio je tako malen da se nije primijetio.

Očekivao sam vrlo mali učinak zbog činjenice da igranje ne uključuje puno tvrdi disk u smislu pisanja podataka na njega. Igranje se uglavnom odnosi na čitanje podataka, opterećivanje procesora, video kartice i vaše RAM memorije. Stoga, nije važno je li vaš sustav šifriran ili ne. Djeluje isto.

Zaključak

Moji testovi su pokazali zanimljive rezultate. Čini se da će šifriranje vašeg računala s TrueCryptom^(TrueCrypt) imati razuman utjecaj na performanse vašeg sustava. Vrijeme pokretanja će se malo povećati kada se koriste tradicionalni tvrdi diskovi i neće utjecati na korištenje SSD^(SSDs) -ova . Na performanse igara uopće ne utječe, dok će općeniti računalni zadaci patiti, osobito kada morate zapisivati ​​podatke na tvrdi disk. Ono što je ipak čudno je da se čini da tradicionalni tvrdi diskovi manje utječu na SSD^(SSDs) -ove kada koriste enkripciju. Međutim, posjedovanje SSD - a i dalje će pružiti bolje performanse od tradicionalnog tvrdog diska, čak i kada je vaš sustav šifriran.

What is the Performance Impact of System Encryption With TrueCrypt

One of my recent dilеmmаs wаѕ: if I encrypt my computer, how much will computing performance have to suffer beсause of іt? Will there be a big difference? If yes, in which areas? Τhat's why I decided to rυn some tests on both my сomputers and learn more about the impact TrueCrypt encryption has on computing performance.

Systems Being Tested

The tests were made on two computers: a desktop and a laptop. The desktop has the following configuration: AMD Phenom II X4 905 (2.5 GHz) processor, a Gigabyte GA-MA785GT-UD3H motherboard, the memory is Corsair XMS3 DHX 6GB DDR3 1600 MHz, a Gigabyte Radeon HD6870 OC 1GB DDR5 video card and a 120GB RunCore Pro V 2.5" SATA III SSD drive.

Unlike the desktop, the laptop doesn't have an SSD. It is equipped with the following components: Intel Core2 Quad CPU Q9000 @ 2.00 GHz, 6 GB of RAM DDR2, ATI Mobility Radeon HD 4650 and a hybrid HDD - Seagate Momentus XT 500GB.

Neither of the systems has a clean Windows installation. They were used for many months and have all the software I usually run on them. This is because I wanted to learn the performance impact encryption will have on systems that are used on a daily basis for a long period of time.

The Tests That Were Made

First, I measured the performance on each system, prior to performing the encryption with TrueCrypt.

I measured the boot timings with the latest version of Soluto. Then, I measured general computing performance using the 64-bit version of PCMark Vantage and graphics and gaming performance using 3DMark Vantage Advanced.

A PCMark Vantage score is a measure of the computer's performance across a variety of common computing tasks such as viewing and editing photos, video, music and other media, gaming, communications, productivity and security. You can learn more about the tests it performs from this page: PCMark Vantage features.

3DMark Vantage evaluates graphics performance and it runs two graphics tests, two CPU tests and six feature tests. If you want to learn about the tests run by the Advanced edition, check out this page: Video Card Benchmark for DirectX 10 on Windows.

Each test was run three times and I recorded the average of all three runs.

Then, the system drive was fully encrypted with TrueCrypt and the same tests were run again, three times. The average scores were recorded for each test.

How Does Encryption Impact Boot Timings?

My first question was about the impact on boot timings. I was pleasantly surprised to notice that the impact was minimal. On the laptop with the hybrid hard drive, the boot was only 5% (5 seconds) slower. A surprisingly good result if you ask me.

On the desktop, which is equipped with an SSD, there was no impact on boot timings. The SSD did its job very well and the system booted just as fast as before.

This is another proof that investing in an SSD delivers really good performance.

The Impact of the Encryption on General Computing Performance

PCMark Vantage runs several tests and its average score is an average of 7 testing areas: Memories (working with photos), TV and Movies, Gaming, Music, Communications, Productivity and HDD. The scores were highly impacted by encryption.

On the laptop an overall 4% decrease was noticed while on the desktop a huge 15% decrease in performance was noticed.

I looked at the individual results, and it looks like the biggest impact is felt by both systems in the HDD tests. There, especially the SSD is hit a lot, delivering 20% less performance.

In all the tests where a lot of data writing on the hard disk was involved, the difference in performance was huge. The SSD had its writing speed lowered by 30% in some tests. However, the hybrid hard disk from the laptop was hit a lot less. It had a decrease in writing speed but never lower than 10%.

Another peculiar result I noticed is that gaming performance as reported by PCMark Vantage, was hit very little by encryption - around 5% decrease.

The Impact of the Encryption on Gaming Performance

The 3DMark Vantage Advanced benchmark confirmed the conclusions about gaming performance, that were shared by PCMark Vantage.

There was no impact in all tests, both on the laptop and the desktop. The performance decrease was less than 0.1%. It was so small that it wasn't noticeable.

I expected very little impact due to the fact that gaming doesn't involve the hard disk much in terms of writing data to it. Gaming is mostly about reading data, stressing the processor, the video card and your RAM memory. Therefore, it doesn't matter if your system is encrypted or not. It works the same.

Conclusion

My tests revealed interesting results. It seems that encrypting your computer with TrueCrypt will have a reasonable impact on the performance of your system. The boot timings will see a small increase when using traditional hard disks and no impact when using SSDs. Gaming performance is not impacted at all, while general computing tasks will suffer, especially when you have to write data to the hard disk. What's strange though is that traditional hard disks seem to be impacted less than SSDs when using encryption. However, having an SSD will still deliver better performance than a traditional hard disk, even when your system is encrypted.

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