For questions concerning computer, or computer-related, performance. Please include metrics in your questions.

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6 views

Change core voltage from ARM processor running Android

There is a way to change the core voltage from an ARM processor running an Android system? I want to run some benchmarks incrementally increasing core voltage, for example, from 0.7V to 1.05V in ...
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0answers
12 views

When an installer is optimising code, what is it actually doing?

Some installers, such as Toad's, perform a "code optimization" during the installation of the program, presumably to enhance the operation of the application. However, considering installers usually ...
0
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0answers
24 views

Does this speed numbers show I can improve my internet connection?

I have a... quite slow Internet connection, but some weeks ago to now I'm experiencing signs that lead me to believe that maybe my Internet connection is faster than I'm experiencing day to day. My ...
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0answers
29 views

Windows 7 - High DPC Latency

I've installed Windows 7 on my laptop, after having Windows 10 and not liking it because of several driver issues and constant bluescreens. My computer is performing much better, but I am still ...
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2answers
30 views

Logical vs. Physical CPU performance

A computer has 2 physical cores, and 4 logical cores (For example, a computer with an i5-3210M processor). When a program A runs, htop shows that it uses 100% of 1 core, and other 3 cores are nearly ...
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2answers
26 views

Does intel turbo boost count towards a minimum-requirements?

I have been asked at work to find cheaper alternatives to the default laptops being ordered and used currently by the various departments at work. Come across a few laptops which hit a solid price ...
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0answers
10 views

CRC keep rising up, the connection is slow, weak download rate

a few days ago, i had the my internet connection doubled from both the Tel Company and the internet provider, but since then, i had problems regarding the browsing speed, slow download rates(some ...
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2answers
29 views

Can laptop slow down after ram upgrade?

I upgraded RAM on my old ThinkPad T400 from 4GB to 8GB. Is it possible that my laptop slow down because of additional RAM? It is quite old laptop. Specs: Intel Core2Duo P8600 2,4GHz SSD Samsung Evo ...
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1answer
19 views

Dell computer slows down due to not charging

I have a Dell Latitude E6420. It currently has this problem where it will be plugged in and not be charging. When it doesn't charge it massively slows down its performance. Sometimes if I wiggle the ...
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3answers
37 views

New SHDD suddently responding VERY slow - Seagate Desktop SSHD

I have a two months old: Seagate Desktop SSHD - 2TB Im running this SSHD as a secondary drive (have an SSD running as boot), being a "backup" drive. I've created two partitions with it: one with 1....
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1answer
33 views

Linux swap slowing my system?

Can swap really slow the system because it uses the hard-disk as a RAM unit ? I have Fedora 24 (Gnome) here with 8 gigabytes of swap and 6 gigabytes of ram , but i am noticing a very bad conditional ...
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1answer
19 views

Why is it so slow to open up a 50 MB text file in a GUI text editor?

I've always wondered why is it so slow to open up a 50 MB text file, either in Notepad++ in Windows or Pluma in Linux. I have a computer with 16 GB of RAM, can't the OS just put the whole file in RAM ...
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0answers
21 views

Weird performance differences on similar workstation cpus

I'm running some scientific simulation code on a cluster which has nodes containing Intel Xeon E5-2630 v3 cpus. The cluster uses CentOS 7.2.1511, the gcc version I'm using is 5.1.0, and the assembler ...
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0answers
4 views

y700 on battery performance really drops after 30min

I got a Lenovo Y700 laptop and it's great! The only problem that I got is when I game on battery the performance are good (all battery saving are off) but about after 30m there is a huge frame drop, I ...
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0answers
12 views

GZIP is not enabled - Load balancer or web server - PageSpeed insights bug?

Is your web pages fast on all devices? Try Google's PageSpeed Insights. How well your site works across mobile and desktop devices? Think with Google. Now, most of these scanning site, looked ...
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0answers
8 views

Outlook + iCloud/iPhone + giga mailboxes - opinions please

I have someone asking me for a fonctional setup under these conditions Microsoft Outlook Google Apps contacts/email/calendar 6-7 PST files for a total of ~45-50 Gb Syncing via iCloud to iPhone ...
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3answers
49 views

Windows 10 - MSTSC UI has very bad performance

About a month ago I reinstalled my PC at work and put Windows 10 on it after I received my new SSD. While the system itself runs very smooth, the MSTSC UI (the connection dialog) is pretty much ...
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1answer
48 views

Old Toshiba Laptop Windows 7 AMD Cpu Upgrade

I want to be able to upgrade my Toshiba laptop from a C-50 dual core CPU to something better around say 2.50Ghz or at least 2Ghz. I don't know the exact socket of the CPU but I think that it is a ...
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0answers
52 views

SSD encryption the proper way

When encrypting devices it is always recommended to fill it with random data first, or it would become evident that the drive is encrypted and how much encrypted data there is. I've read that on an ...
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0answers
36 views

What CPU manufacturers really mean by “1-4Ghz Processor”

Recently I found out that what's known as the crystal oscillator is responsible for setting clock cycles. To my understanding this oscillator is found on the motherboard, not the CPU. My first ...
1
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1answer
36 views

Very slow random read of SSD on desktop (9,000 IOPS) but normal on laptop

I just purchased a new Plextor M6V 512GB SSD and am experiencing very low 4K Q32 read speed. 36 MB/s = ~9,000 IOPS which is 10 times as low as specification value. Why could it be? Motherboard: ASUS ...
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2answers
118 views

The PC runs very slow even after a clean format

Operating System: Microsoft Windows 8.1 Pro [Version 6.3.9600] My System Info My PC is running very slowly and sometimes it freezes. So, I did some Defragment Tests on the HDD's and did some ...
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0answers
101 views

Slow boot on Fedora 24

Last week, I installed Fedora 24. Previously, on the same computer, I was using Fedora 22 (Fedora 24 is a clean installation, not a package upgrade). What surprised me is that Fedora 24 is booting ...
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2answers
22 views

Why Is My Speed Showing Faster Than Max Speed

I am converting .mkv files to .mp4 files using handbrake. I understand that this program is a total resource hog, but it is the best one I have found that can batch convert. Regardless of all of ...
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1answer
19 views

Plugging in ethernet cable slows down wireless

I have a D2200D DSL router provided by Frontier. The router connection has been failing with the DSL link light solid green, Internet link light blue. Failures show up as computer wired and wireless ...
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0answers
16 views

dd file copy uploading to server is fast, downloading image back to local machine is slow

I've used dd to copy a hard drive on one server to the samba share on another server. The speed was between 30-60 MB/s, about what I'd expect. The connection is a dedicated gigabit line for each image....
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1answer
161 views

High CPU Usage, system and svchost [duplicate]

My pc has been experience lag ever since it came back from a fan upgrade. Now i noticed that my cpu usage spikes from 10% to 80% and back in seconds, i see that svchost.exe is consuming 25% and system ...
0
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1answer
32 views

Added new RAM that made computer slow, removed it and it's still slow

I have Windows 7 32-bit and a Kingston DDR2 SDRAM DDR2-800 400 MHz 2GB RAM module. The motherboard has two RAM slots so I added a new 2GB RAM module. This one was Kingston as well, and if I remember ...
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3answers
54 views

why only download is slow but upload is fast on my computer?

I'm confused about a network problem on my PC. It hasn't had a problem before but suddenly its happening often since a week ago. I tested the Internet speed at speedtest.net. My environment is: OS: ...
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2answers
50 views

More computing bang for your buck on Linux? [closed]

I have both a Linux box (running Debian) and a powerful Windows desktop running XP. At work I have a Windows 8 machine. I notice that my Linux box, even though it is just a little Zotac seems to ...
1
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3answers
38 views

Win 7 PC with i7 After SSD install, extremely slow “paint of green bar” on Directory open, performance issue

I have 16G ram and 2T hard drive, then added 120G Samsung SSD as new boot C: (had shop do it) and 2 things happened. The performance was much better for Win boot, but sometimes on opening a drive or ...
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5answers
195 views

Why doesn't a SSD improve the speed of running applications compared to a HDD?

In articles/forums about pc gaming I always see people saying how Solid State Drives only make games load faster at startup (of the applciation) than they would with a Hard Disk Drive, and that an SSD ...
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2answers
37 views

Is using GPU instead of CPU “even if it is slower” possible?

i understand that the GPU and the CPU are different. but whenever this question is asked the answer is the GPU is "many slower processors" while the CPU "fewer faster processors", does that mean that ...
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1answer
13 views

How to check AES speed on Ubuntu?

Is there any way to check how fast an Ubuntu 16.04 machine can do AES ciphering? I'm not interesting in comparing AES levels, but am just curious to see the cost quantified in some way. Since it's ...
1
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2answers
37 views

Windows Server Storage Spaces tier write-back cache, how to configure threshold that determines if write is performed on write-back cache?

The Storage Spaces feature included with Windows Server 2012 and the upcoming Windows Server 2016 consists of a virtual disk. In a tiered storage deployment a write-back cache is created (the default ...
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0answers
16 views

Follow up, extreme sluggishness on machine doing IO

This is a follow up to a previous question. After more investigation it appears that I have a slightly different problem, whenever I do any volume of disk based activity like copying files or backing ...
0
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1answer
29 views

How to know the device driver which is causing the computer to be sluggish (Windows)?

My computer suddenly became sluggish. Task manager didn't help. I had lots of memory (computer has 16GB), SSD and lots of free space. CPU% was less than 5%. The last change that happened before the ...
0
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1answer
25 views

PC Super Sluggish After Installing New Graphics Card

After installing my GT 610 my PC has been slowed down drastically. For example it takes 3 minutes to open chrome and 40 seconds to open the menu when right clicking on the desktop. GPU-Z says the the ...
3
votes
1answer
53 views

How can I determine what hardware is the bottleneck/limiting factor for system performance? [duplicate]

If I want to improve the performance of my computer, or optimise the performance of a computer yet to be bought, how can I determine what hardware I would need to choose/upgrade? Processor clock ...
0
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1answer
47 views

Slow performance using xfreerdp on Ubuntu 16.04

To connect to my virtual machine I use xfreerdp. Unfortunately, I feel too poor performance. For example, the machine has Windows 10, so when minimizing windows, you can see one frame of animation. I ...
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0answers
30 views

Windows 10 slows down after Edge or Git usage

I have a fresh Windows 10 installation, which is getting slow ~ 10 to 30s after logging in the first time. The system is not lagging otherwise. I'm a kind of clueless. My setup: Dell OptiPlex 7040 ...
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0answers
24 views

Optimize hardware for CPU intensive tasks

Can I use perf counters to make better decision about investing in hardware? My goal is to run CPU intensive tasks like gcc faster. I'm wondering whether I should focus on getting more CPU cores, ...
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0answers
29 views

What do more cores specifically do? [duplicate]

I am running Windows 8 on a custom built pc, where the processor is currently the Intel Pentium G3258 (2 CPUs) ~3.2GHz and I have overclocked it to run at 3.7GHz, but the performance I need is ...
0
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0answers
65 views

Mac is overheating, getting slow and unresponsive without any reason

About a year ago I noticed my laptop is strongly overheating and CPU raises up to 100% percent without any reason. FYI, no special apps are running. Typical apps to raise such beahavour are: Chrome ...
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votes
1answer
51 views

Slow PC after installing new GPU

A few days ago I installed my new GT 610 (I know you cant game on it) but my pc slowed down drasticly. For example it takes about 3 minutes to open chrome, about 40 seconds to load the menu when right ...
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0answers
28 views

Improving Sequential Writes on RAID5 - Write back to SSD?

I have a RAID 5 array consisting of 3x 5TB WD Red NAS drives. RAID 5 is done via a Dell H710 HW RAID card (LSI 2208 I believe). This is a home setup, and the pool is only really used to save ...
0
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1answer
23 views

Windows 10 keeps messing up draggable window's content

Starting a few weeks ago, I suddenly got no window contents when I dragged a window around. Quick googling helped and I activated the Setting "Show window contents while dragging" in the virtual ...
3
votes
0answers
34 views

Win7 keeps warning me about “slow performance” and disables Aero & UI effects. It is decidedly wrong

In the last few days, Windows has started giving me warnings about "slow performance" and subsequently disabling Aero and all the UI effects. I'm getting this a few times a day. This is Windows 7 ...
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0answers
22 views

Windows 10 boot loader appears twice

My Windows 10 Pc was working fine, when suddenly I encountered this problem. When I boot my pc on, the boot-loader appears twice, first it finishes and then it comes again, and this time its very long....
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0answers
26 views

Benchmarking network latency

I am trying to measure the latency of sending a packet. I do this as follows. The client sends recorded time. The server receives the packet and gives the difference between the current time and the ...