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

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4
votes
1answer
4k views

High CPU usage by dwm.exe when nothing is happening

Setup: Windows 7 Ultimate, running in a VMware box inside Windows 8, VMware Tools installed; VMware Workstation is the only application launched in win8). Aero is on. Starting a few months ago, on ...
1
vote
3answers
7k views

Will graphics improve if I add RAM with Shared Graphic Memory?

Recently I purchased a Toshiba L675-S7108 laptop with shared Graphic memory 64MB~1696MB with 4GB RAM (DDR3 1066MHz). If I increase the RAM up to 8GB, will the graphics also be improved while gaming? ...
0
votes
1answer
30 views

Gaming write-to-disk amount

I'm wondering (and I can't seem to find any relevant information) how much does gaming specifically use in disk writing? I know "gaming" is quite generic, but I'm comparing this to classic desktop ...
1
vote
0answers
46 views

svchost.exe (LocalServiceNetworkRestricted) uses excessive RAM on startup

I'm running Windows 8.1 on a Lenovo Ideapad Yoga 13 with a Core i5 CPU and 4 GB of RAM that I bought July of 2014. Though I have had a good experience, there's one problem, as you can see from the ...
0
votes
0answers
27 views

Hard Drive R/W Speeds are Limited to about 3Mb/s

My mom's Acer laptop is super slow. However, when I open the task manager, the limiting factor of its performance seems to be the hard drive, which is usually maxed out at 100%, though only operating ...
1
vote
0answers
32 views

How to diagnose slow (only for awhile after start) Windows 7 machine?

I've got a Lenovo Ideapad, with a dual core Atom processor and Windows 7 that exhibits some odd behaviour. It's insanely slow right after boot. The disk drive will be lit up solid and grinding away ...
6
votes
1answer
232 views

After plugging in a USB device, Win7 severely slows. What causes this and how could it be fixed?

This is the second PC undergoing this condition, both running Win7. On PC1 a Logitech device was connected through USB before installing it's branded driver (allowing windows to auto-install it), and ...
48
votes
8answers
65k views

How can I produce high CPU load on a Linux server?

I’m currently in the process of debugging a Cacti installation and want to create CPU load to debug my CPU utilization graphs. I tried to simply run cat /dev/zero > /dev/null, which works great ...
-1
votes
3answers
46 views

Will I perceive speed improvement with more ram?

I have a Toshiba Satellite L855-S5240. The current specs are, Intel® Core™ i5-2450M Processor2.5 GHz, (3.1 GHz with Turbo Boost Technology 2.0), 3MB L3 Cache Mobile Intel® HM76 Express ...
0
votes
0answers
40 views

How can I improve the performance of my computer?

I have had my computer for a long time now and even though I try to keep things clean, it seems relatively slow. Particularly, the windowing system seems to lag frequently. Windows fade in slowly ...
0
votes
1answer
28 views

Black screen after resume from hibernate

Here's my config: Windows 7 Ultimate (64-bit) i5 + 8GB (1600MHz) Samsung 850 Pro (256GB) My disk is giving me around 540MB/sec read speed, so I get a resume time of about 15-17 seconds which is ...
25
votes
8answers
3k views

Can a massive MySQL data import on an SSD damage it?

I have to import quite a lot of data (~100 million rows, ~100 times) into a MySQL database. Currently, it is stored on my hard disk drive, and the bottleneck of my import seems to be the hard disk ...
3
votes
1answer
122 views

Evaluate memory throughput

I use memtest86+ since years to evaluate memory throughput, allowing me to be sure everything is ok before putting a server in action. With one motherboard I can't have this information: The ...
156
votes
9answers
18k views

Why does emptying disk space speed up computers?

I have been looking to a bunch of videos and I now understand a bit better how computers work. I understand a bit better as well what is the RAM, the volatile and non-volatile memories or the process ...
0
votes
2answers
50 views

Does disk partitioning impact performance? [duplicate]

I will soon buy a 4 TB HDD and I am wondering if I should split it since it has so much space. My question is: will doing this affect my computer's performance? If I would keep everything in one disk, ...
0
votes
1answer
26 views

Arch Linux extremelly slow and laggy

I was looking for an distribution that has Android Studio built in and came across 'BBQLinux'. The Android Studio works, but it's extremelly slow, to the point where it's unusable. I downloaded the ...
16
votes
7answers
11k views

Does storage capacity affect hard drive performance?

I read somewhere that smaller (in terms of disk space) hard drives are faster than equivalent but bigger hard drives. How true is this? In other words, say I have two hard drives. Both are of the ...
2
votes
3answers
38 views

What does the minimum spec mean in regards to CPU clock speed

Most software provide a minimum and/or recommended spec of hardware in order to the software. Within this list, we're usually informed of a clock speed for the CPU. For example, Visual Studio has, as ...
0
votes
0answers
13 views

Speed with multi-cpu motherboard

I'm looking at building a dual-cpu system, but I was wondering if there were any concerns with bottlenecks that I should be aware of since data is going to two different places now. I know that each ...
33
votes
7answers
17k views

Why is my computer really slow despite having a considerable amount of free memory?

I have a Lenovo g560 3-4 years old, Intel i5, with 2GB ram and with a Geforce 310M. It always had some issues during startup or when starting a new program, but recently it just went crazy. From the ...
0
votes
0answers
35 views

Use two different connections: one exclusively for download and the other for upload: possible? [duplicate]

I hope you can help me with this dilemma. I have two different connections, one is via router/ethernet, the other one is mobile: the first one has a very good download speed, but lacks of upload ...
0
votes
3answers
90 views

Why is my Acer Aspire E15 running slower when plugged in than on battery?

I am working on an Acer Aspire E15 (ES1-511-C590) running Windows 8.1 X64 with all the latest patches. It is running significantly slower while plugged in than when running off battery. Yes, this is ...
0
votes
0answers
15 views

Gateway NV5398U hard drive very slow to respond after upgrade from Windows 7 to Windows 8.1

This old but fully functional notebook PC worked as expected with Windows 7, just as fast (or slow, rather) as it was when new. After installing Windows 8.1, the graphics drivers were manually ...
-2
votes
1answer
31 views

Compare the performance and reliability of two hard disk drives [closed]

I currently have two basic hard disk drives from brands I don’t even recall. I just bought a new SSD to be the replacement of one of the two current ones. The two hard disk drives I currently ...
0
votes
1answer
78 views

Speccing out CPUs (more than just cores and clock) [duplicate]

This is not a production question, just something that I've been thinking about. When speccing out CPUs I know the general rule is a faster clock speed will make a core run faster and the greater ...
1
vote
0answers
60 views

Samsung 830 256GB SSD dying?

I have a decent fast Computer (i7, 32 GB RAM, SSD, ...), which worked flawlessly for a year now, but about over a week ago the access rates just went bananas (well, very slow like on HDDs). Just some ...
-1
votes
0answers
23 views

Laptop stops charging after a few minutes

I'm using a Gateway laptop, the machine works fine on battery power. As soon as I plugin the charger it charges the battery for few minutes before the system show it as disconnected even though the ...
0
votes
1answer
74 views

My CPU claims it is 2.53 GHz but never reaches it. Why?

My CPU claims it is 2.53 GHz but never reaches it. I run CPU burner, and set c state limit to c0. All power savings are disabled and I set multiplier to 20T which is the only allowed turbo multiplier ...
19
votes
3answers
1k views

Why are newer generations of processors faster at the same clock speed?

Why, for example, would a 2.66 GHz dual-core Core i5 be faster than a 2.66 GHz Core 2 Duo, which is also dual-core? Is this because of newer instructions that can process information in fewer clock ...
0
votes
3answers
55 views

What factors other than clock speed influence the performance of a CPU? [duplicate]

Having seen various people test powerful emulators on their computers, I have come to surprise hearing about how one CPU can have triple the clock speed but still have worse single-threaded ...
0
votes
4answers
66 views

Random spikes to 100% CPU lasting several minutes, (intervals, duration, processes) W7 PRO Dell E6400

For the last month or so I'm plagued with often, yet unexplainable spikes to 100% CPU load. Usually then Task Manager shows one or two processes taking 50%+ of CPU (not always the same: svchost, ...
1
vote
1answer
13 views

VMware vSphere / ESXi 5.5 recommended guest system architecture

I am currently setting um VMware vSphere / ESXi 5.5 on a DellPowerEdge2900 and since it's an older server the following question came to my mind: Considering performance should I install guest ...
0
votes
1answer
3k views

ext4 vs btrfs performance on SSD array

I am observing something that I cannot explain. I am trying to come up with a good filesystem configuration using HP P420i controller and SSDs. Out of curiosity I have tried BTRFS (still unstable so I ...
2
votes
2answers
88 views

Windows XP (32-bit) system with 8GB RAM, will I still get dual-channel benefit?

I am running a legacy Windows XP 32-bit PC (not for internet use of course). It has 2x4GB RAM which operates in dual-channel mode. Obviously Windows XP can only use 4GB RAM. One could argue the ...
8
votes
8answers
40k views

TiWorker.exe - Very High CPU Usage

I have a laptop running Windows 8. Although it originally ran well, it started having very bad performance issues. I decided to perform some research into the topic. Opening up Task Manager, I ...
3
votes
1answer
4k views

BootCKCL.etl file size & Session “Circular Kernel Context Logger” stopped due to the following error: 0xC0000188

I have a few regular / re-occurring errors in my event viewer which seem to be linked to logging upon boot and shutdown. I am running Windows 8 x64 professional. Event ID 4: The maximum file ...
9
votes
7answers
15k views

Are we suppose to manually delete contents of /tmp?

I was under the impression that /tmp will regularly delete "old" files. Seems to me that /tmp will just grow as long as it wants to and won't delete anything. Some people say it's betetr to just leave ...
5
votes
2answers
156 views

Choppy CSS3 animations in all browsers on yoga pro 2

This might seem as a broad question because I don't know where to start. When I compare the same CSS3 animations between my old Lenovo Yoga 13 and my new Lenovo Yoga 2 pro, my old laptop performs much ...
0
votes
1answer
54 views

Computer super slow and laggy, while resources are not being used

Ok so I have a custom built PC; specs below: CPU: Intel Core i7-4700 Motherboard: MSI Z97-G55 RAM: 16GB DDR3 Video Card: PNY nVidia GTX 770 Primary Hard Disk: Samsung 850 Evo Primary OS: Windows 8.1 ...
3
votes
2answers
2k views

Why does my laptop's CPU intermittently run REALLY slow?

My laptop's CPU is an Intel P8400, rated for operation at 2.26GHz. However, sometimes it starts running really slow: the computer becomes nigh unusable, and utilities like CPU-Z show clock speeds in ...
1
vote
1answer
33 views

Arch Linux insane memory usage

I just installed Arch Linux and set it pretty much up how I want it to be. At the moment XFCE4 with LighDM, Firefox and a few other little applications are running. I wanted to see whats going on in ...
48
votes
16answers
99k views

How do I troubleshoot a Windows freeze or slowness?

A machine is described as being "really slow" or "freezing". How can I troubleshoot/resolve this issue? What should be the first steps to take?
1
vote
1answer
2k views

Flash stream makes my internet slow and cpu rush

When I try to watch a live Flash stream, my CPU usage goes up to 75% and my Internet speed goes down. If I run a test before the video-stream, my speed is ~40/10Mbps and during the stream it drops to ...
0
votes
1answer
393 views

Extremely slow download speed, could my modem be causing it?

First off all I want to thank everyone who is reading this. This will be a long problem so I really hope someone has an answer, as my ISP doesn't. For over a month we have been experiencing ...
25
votes
12answers
9k views

Reclaiming disk space on Windows [closed]

A lot of disk space is taken up by a default Windows installation in various temporary and backup data that may never get cleaned up on its own. Eventually you realize that the large multi hundred ...
0
votes
4answers
3k views

Low disk performance with Windows 8.1

I have a Dell XPS 15 (L502X) that have a Core i5-2450M, 6GB RAM and a 1TB WD 5400RPM HDD. This notebook Achilles' heel is the disk. It's slow and I understand that if I do stress it to much, it lends ...
2
votes
0answers
273 views

USB Keyboard and Mouse slow to activate using docking station for Lenovo T430

I just recently upgraded to a T430. Happy with the laptop but one thing I find annoying is that when I use it through the docking station - it takes several minutes ie 3-5 for the USB keyboard and ...
-1
votes
0answers
55 views

Disk transfer rate suddenly became extremely slow Windows 8.1

I've been running Windows 8.1 x64 on my AMD Phenom PC for a long time without serious problems, and today my HDD transfer rate got ridiculously slow. The Seagate Barracuda 7200 1TB HDD was bought ...
0
votes
0answers
213 views

Toshiba Satellite P850 - Freezing and Stuttering

I've about exhausted all my known options at this point. I own a Toshiba Satellite p850 which was new in 2012. The laptop frequently (several times per minutes) locks up or stutters the entire system. ...
2
votes
1answer
47 views

Ethernet switch throughput

I'm not a network/hardware guy so please bear with me if I'm using the wrong vernacular in my question: My office recently upgraded our Internet from 50/10 Mbps to 150/20 Mbps. For this upgrade, we ...