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

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-2
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0answers
18 views

Why does AMD (based) ramdisk performance suck?

I'm using: softperfect Ram Disk I've tried imdisk and a few others, they were way slower. @2133 16GB dual config Ungagged. Kingston HyperX KHX2133C11D3/8GX, yes motherboard compatible (manually set ...
0
votes
0answers
9 views

Macbook Air, Mavericks: 2.9 gb of ram used at startup

Running: MacBook Air Late 2010, 13 in, 4gb RAM. Only 8gb free on SSD Immediately after booting, I opened activity monitor and this is what I saw: About 2.9gb of Ram already used up, and a list of ...
1
vote
1answer
52 views

WD Black 2.5 sata drive slow on windows 8. Sector size is 4k. What gives? 40MBps write

WD Black 2.5 sata drive slow on windows 8. Sector size is 4k. What gives? 40MBps write. This is a brand new WD black scorpion 500gb drive, on a brand new Zotac Zbox Nano CI320, quad core with 4gb of ...
0
votes
0answers
25 views

Powerful PC struggles during normal use

I recently bought a PC with the following specs: MOBO: ASRock Z97M Pro4 Chip: Intel i5 4670k RAM: 16 GB RAM 1600MHz Storage: SSD Samsung 840 EVO 250GB to boot the OS and 1TB HDD 7200rpm for data ...
-1
votes
0answers
11 views

How to find out if my slow PC could use more RAM to gain performance? [duplicate]

I'm an owner of a relatively slow netbook Asus EEE PC 1101HA, which has an Intel Atom CPU Z520 (1.33GHz) and 1GB of SO-DIMM DDR2 RAM installed. Windows 7 uses about 650MB of memory when no other apps ...
0
votes
0answers
13 views

PCI-Express RAID Controllers with TRIM Support

I've an AMD Athlon computer with Windows 7 and I'd like to set up an SSD Raid 0. Are there any PCIe RAID controllers with TRIM support available on the market? The only thing in this are that I've ...
0
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0answers
12 views

Which is faster: less RAM in dual channel mode, or a greater amount of RAM? [duplicate]

So I'm thinking of upgrading the RAM on my computer: currently I have two RAM chips, one 1 GB and one 4 GB. I'm debating on what's the best way to do the upgrade to get the best performance. Here's ...
0
votes
0answers
43 views

Very poor connectivity and poor performance on high end specs

I recently got a new laptop which has very good specs, it's basically a direct upgrade from my previous laptop - a GTX860M, quad core i7 2.5GHz and 16 GB ram. My old laptop ran Minecraft at 60+ FPS ...
-6
votes
3answers
45 views

Extremely slow computer [on hold]

I'm using Windows 7 Ultimate 64 bit. It takes forever to boot up my computer and it is full of lag. It takes about a whole minute in the loading windows 7 screen, and after logging in (entering ...
0
votes
0answers
28 views

How to find out what causes Driver locked

My computer is running slow, so I decided to use RAMMap. I've found out that "Driver locked" has allocated about 10 GB of RAM. I've searched the internet, and found out that programs like VMWare, ...
-2
votes
0answers
23 views

Browsers take long time to access websites from PC but not tablet

All the web browsers I've tried (Firefox, Chrome, and Explorer) on my PC, using a Wi-Fi router, take a long time to load web sites. Oddly, I will sometimes get a quick response if I do something else ...
0
votes
1answer
30 views

4 SSDs RAID 0 integreted vs dedicated controller

I've been thinking about setting up 4 SSD RAID 0 to gain performance in my home PC, and I ran into this review of PCI-E based SSD. If I use PERC H310 (8 lane PCI-E 2.0 RAID controller, which means ...
0
votes
0answers
94 views

Very slow computer but low CPU or Memory usage

My computer is very slow. All the programs and Windows itself is slow. But strangely, all the games run without lag. They are not affected somehow. I just reinstalled my computer for the 6th time ...
0
votes
0answers
18 views

64 bit ARM vs 32 bit ARM [closed]

64 bit ARM benefits in terms of power/performance opposite to 32 bit architecture. Where will it be deployable or the application domain for 64bit architecture. Can anyone suggest me on this?
0
votes
0answers
19 views

Tool/Utility to log Windows Copy/Paste ,Cut/Paste operations [on hold]

Hi I'm looking for a utility/tool that can help me log/record the Average Transfer Speed,Time,Disk Read/Write speeds for Copy/Paste , Cut/Paste operations in Windows. I'm aware of Terracopy being ...
44
votes
8answers
5k views

Should I disable swap file if I have lots of RAM or should I move it to a virtual RAM drive?

Imagine I have tons of RAM. Let's say 64GB. That's a lot for even gaming PCs. Now the default location of a pagefile in Windows is on the main OS drive, be it HDD or SSD, which are faster in general, ...
1
vote
1answer
20 views

Open programs take forever to reload after another program used-up all the memory

I have the following phenomena: I have 4GB RAM, and sometimes I use a program (program A) which uses up all the available memory, say 3.9GB. If there are more open programs, then their memory is ...
0
votes
0answers
48 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 ...
0
votes
1answer
17 views

iptables - I'm losing control over the box by adding new rule to the config

My set up is the following: Internet uplink (200Mbit) DMZ (1GB ethernet) Internal network (1gb internet) Log interface My gateway is serving around 600 clients with 1400 iptables rules in ...
0
votes
0answers
8 views

How to implement conditional sum in a smart way?

I want to implement a sum over three variable l,m,n such that l,m,n are integers that are greater or equal zero and l+m+n is equal to some integer v. As I have quite a few of these sums in my ...
1
vote
0answers
17 views

Is there a way to “undercommit” memory in Linux (VPS burst memory woes)?

I've been noticing occasional drastic performance hiccups in my application hosted on a VPS. My VPS plan has 1GB guaranteed RAM and 1GB "burst" RAM. Occasionally the app will become extremely ...
0
votes
1answer
22 views

Troubleshooting slow log on of a computer? [closed]

What tools would you utilize to troubleshoot a slow logon of a computer? How and why? Thanks in advance
0
votes
3answers
110 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 ...
0
votes
2answers
48 views

Intel 10Gbps card bandwidth

I have an Intel 10Gbps card that has the 82599 10GbE Controller. The card has two ports in it. The datasheet of the controller says it supports PCIe 2.0 (2.5 GT/s or 5.0 GT/s) Now, according to PCIe ...
0
votes
1answer
27 views

Difference between Instruction, operations and micro-operation (uop)

I am trying to understand the intricate terms related to performance of processors. Computer performance is measured in FLOPS, which is short for FLOPs per Second. FLOPs itself stands for ...
0
votes
2answers
33 views

Is it bad for a CPU to be running at a high speed for extended periods of time?

I have an Intel Core i7-4770S (3.10 GHz) that can go up to 3.9 GHz in turbo mode. Windows Task Manager can report it going up to about 3.5 GHz when playing certain games and probably goes higher every ...
0
votes
1answer
36 views

I can copy a file from my NAS but not watch it

I have a cheap embedded linux NAS (a Seagate Central.) The device is certainly underpowered, but it's not entirely useless. One thing that bugs me is that I can reliably copy a 300MB AVI file to my ...
0
votes
0answers
42 views

Graphics stuttering in 3D Games

Every time I play a game, I experience random stuttering of video and the FPS counter very briefly goes down to 0. This stuttering can be seen in this YouTube video, with the most obvious stuttering ...
0
votes
0answers
41 views

Windows internet sharing uses 50% of my CPU

I discovered that svhost.exe process is using almost 50% of my CPU time when computer was almost idle - I was downloading big file with USB 3G modem with 80kB/s speed. I have relatively fast CPU ...
-1
votes
0answers
34 views

Windows takes a suspiciously long time to start launching applications

When opening applications it often takes an excruciating amount of time before the application starts. The odd part is that the computer is not not slow down at all, and if I open the file using "Run ...
-1
votes
2answers
31 views

fastest RAM configuration [closed]

I am planning to buy a workstation for doing heavy image processing parallel computation (for 3-dimensional electron microscopy) under linux. It will have 64 cores (4 AMD opterons of 16 cores each). ...
0
votes
1answer
58 views

Virtualbox Mac OSX host - Ubuntu guest is slow and laggy

I did some research already as to why my Ubuntu guest is slow on my (quite powerful) MBP but no success. Is there something I am missing? A setting? A configuration? FYI I am usin g: ICH9 chipset ...
1
vote
1answer
40 views

SSD Performance showing as 'bad'

Today I stripped down and rebuilt my PC (to get rid of surplus cabling, and to give it a clean since it was pretty dusty in there), and everything is running fine. Well, except my SSD (apparently). ...
0
votes
0answers
27 views

Linux, vim and ssh: why is vsplit slow?

As soon as I have more than one file visible with a vertical split (= :vsplit) the moves and screen refresh become sluggy. I've noticed that on many different Linux systems (old and my very recent ...
-2
votes
2answers
55 views

Why is my computer slower now than it was when I bought it after a clean installation? [closed]

I've just reformatted my home PC. It's an i7-920, 16GB RAM machine (so it was pretty good back in the day). I've installed a clean installation of Windows 7 and I'm wondering why the PC is much ...
0
votes
0answers
45 views

Computer became slow recently

System Specs: Windows 8.1 64-bit Intel Core i7-4700MQ CPU @ 2.40GHz, 8.0GB RAM, Intel HD Graphics 4600 / NVIDIA Geforce 750M GT Computer has been recently slow. This includes startup ...
2
votes
1answer
73 views

What are the differences between “scientific GPUs” and “gaming GPUs”?

I am currently working with neural nets and I recently made my code much faster by configuring a framework correctly to make use of a GPU. The GPU that is used is a Tesla C2075, which is part of the ...
0
votes
0answers
13 views

My System speed seems slower than the components would predict

I run an Intel 4770k CPU overclocked to 4.6 GHz, 32 GB G-Skills DDR RAM, primary boot drive Samsung 840 SSD, 10 TB auxiliary drives, 3 GB Radeon video, 1000 W PSU, Zalman GS 1200 case with Windows 8 ...
0
votes
0answers
27 views

How can I improve the performance of my audio software?

I am running OtsAV on Windows XP. The way it works is by buffering a small amount of data from the hard drive just before it needs to play it. It used to give flawless sound no matter what else was ...
0
votes
1answer
20 views

SSD Setup OS/Programs/Documents

I am trying to configure a new computer using SSD's. Am leaning toward the following configuration: 1) SSD of about 120GB solely for OS 2) SSD of about 120GB solely for programs I would use (MS ...
1
vote
1answer
39 views

“Disk” always at maximum usage

I recently opened up my laptop to fix a faulty power connector. Since then I have noticed my disk usage (not sure what it actually corresponds to) has been very high, as in the screenshot below: (Note ...
0
votes
0answers
20 views

Low Memory Performance

I am currently benchmarking some of my code to see where the bottleneck is. My memory is DDR3 1066MHz DualChannel Mode This should result in 17GB/s peak memory performance. With my code I am ...
1
vote
0answers
31 views

Slow Windows Application Startup

I have Windows 8 Pro/i5 3320M laptop with 8GB memory. Java based applications such as Eclipse, Phpstorm takes about 15-30 mins to load. (i assume issue is with java apps, others work fine). I tried ...
0
votes
0answers
80 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 ...
0
votes
1answer
21 views

Asus N56VB-S4016H disk response time

We recently bought 3 Asus N56VB-S4016H laptops, and although the specs are great for the price it costs, we are experiencing similar issues on all 3 of the devices. After startup, a cold boot or from ...
0
votes
2answers
37 views

Does writing to SSD influence SSD Read spead?

I use my SSD to read and write at the same time, and I found that writing influences read performance quite a lot. Example: Without write, my read may be X MB/s, but with write, my read became 0.5X ...
-1
votes
2answers
51 views

How much faster is SSD compared to regular hard drive?

http://www.seagate.com/internal-hard-drives/solid-state-hybrid/desktop-solid-state-hybrid-drive/ Some says that using hybrid drive is 4 times faster. Some says it depend on data read. SSD is only ...
0
votes
0answers
29 views

why is my sort slower with more ram?

System specs below. I recently purchased 2X4 RAM: Corsair XMS3 8 GB (2 x 4GB) 1333 MHz PC3-10666 240-Pin DDR3 Memory Kit CMX8GX3M2A1333C9 I already had 2X2 in there for a total of 12GB: Corsair ...
0
votes
0answers
12 views

Why does top and Google Compute Engine give me two totally seperate cpu % values?

So to preface this, I haven't done much in Linux since a decade ago when I was in college, so I may just be doing something stupid. However, for this project I am working on I'm performing a load ...
0
votes
0answers
31 views

What is fastest way to backup a disk image over LAN?

Sometimes I boot sysrescd or a similar live linux on a PC to backup the hardrive over local network to my server. I noticed many times, that the transfer speed is not optimal (slower than HDD and ...