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

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-1
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0answers
27 views

Would this registry change affect you or your users negatively?

Would this proposed registry change affect anyone's PC they take care of, or any software you are involved in creating or supporting? If I proceed, it's possible you would see this change on a PC you ...
1
vote
0answers
8 views

magic behind intel RST drivers performance up till 11.2.0?

what's the magic behind the massive write speed performance boost by intel RST drivers up till and including version 11.2.0? i have done some performance measurements of my application that is ...
0
votes
0answers
1 view

Pycharm on Linux: Scrolling has become suddenly very sluggish

I've a Linux machine with 4gb of RAM and 2 VCPUs on VirtualBox running on a Windows 7 host (Core i7 with 16 gigs of RAM). The Linux VM is my workspace for a project. I run Mobaxterm on my Windows ...
3
votes
2answers
3k views

Very slow volume expand on Synology ds2413+

I've posted this elsewhere on the internet aswell, and will obviously reply in both places if a proper solution is found. I am attempting to expand SHR volumne (2x4TB, 1x2TB) with additional 4TB ...
2
votes
1answer
17 views

How to best manage the run of several processes?

My computer has 6 cores. I have to run 12 processes. Each process takes exactly 10 minutes. I want to consider (for the sake of the argument only) two scenarios: I run 2 processes successively on ...
0
votes
2answers
56 views

Windows 7 running slowly despite having lots of CPU and memory free

This is my computer spec - intel i7 2500k @ 3.4ghz, win7 64bit with 16gb of ram. Radeon HD 6800 My computer is starting to run progressively slower for example when switching between programs ie ...
0
votes
0answers
13 views

What parameters should I consider when comparing two CPUs?

When comparing CPUs, it seems that basic parameters such as the number of cores or the clock rate are not enough. For instance, on a popular French e-commerce site, Intel Xeon E5-2620 v3 (2.4 GHz) ...
4
votes
2answers
27 views

Does an INTERNAL USB hub affect performance?

I searched a little bit on the subject, but I couldn't find any clear answers, so I'm asking this question: Will the performance of a USB hub connected directly to the motherboard be shared between ...
0
votes
0answers
18 views

Prevent KDE from swapping

I've realized that my laptop was overheating as a result of lots of I/O, so I searched for the programs who used swap, and I found the following: $ pgrep kwin 13387 $ pgrep plasma-desktop 13424 $ cat ...
1
vote
3answers
697 views

Thinkpad Edge E430 slowed down to a crawl

We bought 2 thinkpad E430 systems in September 2012. They were running Windows 7 pretty smooth as the time but as it stands today, my dad's thinkpad has slowed down to a crawl. Clicking on the start ...
1
vote
1answer
2k views

USB mouse pointer lags when external HD is plugged in

So I just discovered the cause of my mouse's "random" lagging. I have a Microsoft 3500 USB mouse and a Seagate FreeAgent GoFlex 500 GB external hard drive. When the former is plugged in, everything is ...
-1
votes
1answer
40 views

Does System Utilities Slow Down My Pc Rather than Speeding It Up?

I came to know that PC System Utilities are fake they just slow down your PC rather than speed it up.Is that correct?Can I trust PC System Utilities like System Mechanic, WinOptimizer, Advanced ...
53
votes
8answers
72k 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
1answer
83 views
+50

Windows 8.1 cached memory and memory optimizers

I can't find similar question so talking about it so I would like to create one. It is a bit long so I bold what I want to ask actually. Someone had noticed Windows 8 is taking too much memory for ...
1
vote
0answers
323 views

Computer became really slow after Microsoft account sync

My computer has always been very fast since I formatted and reinstalled Windows 8 x64. Yesterday I did some things - the result is that my computer became VERY slow. Game performance is greatly ...
0
votes
2answers
93 views

Massive Computer Slowdown On Most Everything

I feel dumb asking this, being A+ certified and all that, but I'm not sure what to start at. So this problem has been getting progressively and progressively worse, and now it's to the point where ...
0
votes
0answers
23 views

How much barring does the CPU, BUS and Motherboard have on a pfSense system?

I am planning on turning an old Pent 4 system into a pfSense box using (4)100Mbps ports and I have a 50/50 fiber connection currently for $25/mo and was wondering if I would by at any rate slow the ...
5
votes
4answers
2k views

Why do virtual machine files on a ramdisk not run faster than on a physical disk?

I installed a total of 36 GB of memory (4x8 GB + 2x2 GB) onn the host (Windows 7) and I used ImDisk to create a 32 GB ramdisk and formatted it with an NTFS file system. Then I copied the virtual ...
0
votes
1answer
110 views

Causes of slow network connection between two Windows 7 computers on LAN but either Win7 and a Linux computer are not slow

I am experiencing slow (approx. 1 MB/s) transfer speeds on my home wireless network between two Windows 7 computers. Speeds improve when switching to Ethernet on both. This speed is being observed ...
0
votes
0answers
18 views

Performance degradation migrating the OS on SSD to bigger SSD

I'm planning to buy a bigger SSD but soon a question came up to my mind: would my performance fall down after moving the OS on the bigger SSD (like it happens from HDD > SSD without clean install)? In ...
0
votes
0answers
8 views

Performance issues after migrating to a new server with better hardware config

I need help optimizing a server. We are currently using a pc with below configuration as a server (current) for Sugarcrm. Processor: RAM: 16GB Hard disk: SATA 500GB 7200 rpm OS: Ubuntu 12.04 LTS ...
8
votes
3answers
296 views

Is it possible to process millions of datagrams per second with Windows?

I am investigating if I can implement an HPC app on Windows that receives small UDP multicast datagrams (mostly 100-400 Bytes) at a high rate, using a dozen or up to maybe 200 multicast groups (i.e. ...
1
vote
1answer
28 views

Consistently high disk usage slowing down computer

I am getting extremely high disk usage on my computer when running my virtual machine which is causing the vm to slow to a crawl. The native OS is Windows 8.1. The vm is Ubuntu 14.04 64 bit running in ...
6
votes
2answers
150 views

SSD upgrade underperforming

I upgraded my Windows 7 PC from a Samsung Spinpoint F4EG HD204UI HDD to a SanDisk Pulse SDSSDP-128G-G25 SSD but, unlike seemingly everyone else in the world, I have never noticed a performance ...
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 ...
-1
votes
0answers
48 views

Why isn't Firefox quickly multitasking between non-selected tabs? [closed]

I have a powerful processor (i3-4160) and I should be able to have something complete uninterrupted/slowed down while I am doing something else on another tab, but the browser isn't doing this. I'm ...
2
votes
2answers
2k views

Test disk write speed on existing partition

I want to benchmark write speeds on a disk in an existing server setup. I suspect there is a problem with the write perf of the controller. Benchmarks I have tried (SiSoft Sandra, HDTune) report that ...
3
votes
2answers
77 views

Which graphical settings impact CPU usage?

When running a game on a CPU-bottlenecked PC, which graphics settings should be decreased to improve performance? In other words, which settings usually have impact on CPU usage (rather than GPU)?
3
votes
3answers
2k views

HD movies stutter

I just put together a new system build in the hopes that all of my daily tasks would run smoothly and without any hiccups. Unfortunately I am still seeing some sound and sometimes video stuttering ...
-2
votes
0answers
21 views

CPU governor ondemand is lagging my system [closed]

When I change my cpu governor from userspace to ondemand my system starts lagging. I read that ondemand is better than userspace. But, it not happens on my system. What should be my problem? Thanks.
-1
votes
0answers
29 views

Why is Android generally slower/less smooth than iOS or Windows Phone? [closed]

So I'm an avid Android user and developer. I, for the most part, really like the platform - all its extensibility/customizability/freedoms. That being said, having worked with iPhones and Windows ...
0
votes
1answer
50 views

What is the difference between CPU and Core temperatures? [duplicate]

While trying to figure out why the performance of my machine has suddenly severely degraded, I noticed that although CPU temperature is being reported as 45C while idle, the temperatures of all 6 ...
1
vote
4answers
4k views

HP Probook 4530s great specs, but lagging. Hard Drive?

I have this laptop, which has a i3 processor, 4gb memory, 7200rpm hard drive. So there is nothing wrong with the specs. Even when I have no applications open, simply closing and opening windows, ...
3
votes
1answer
5k 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 ...
0
votes
1answer
24 views

Does ASRock XFast USB actually improve file transfer?

Since I bought my computer from a friend, I have been using the ASRock XFast USB software. It came with the ASRock motherboard (that is, it's not something that was found on the internet and installed ...
0
votes
0answers
15 views

How to Match Memory to FSB (pre IMC)

I have the following hardware: P35-DS3L supporting FSB 333/266/200 Mhz, quad-pumped. Four dual-channel slots. E2180 currently @ 2.00Ghz (200.00x10) I plan to raise the FSB to 266.66. This is my ...
-1
votes
0answers
22 views

current crypto hash function benchmarks (specifically SHA-1) [closed]

I'm looking for up-to-date benchmarks for creating hashes. I'm looking especially for benchmarks targeting SHA-1. oclhashcat benchmarking states for SHA-1 on a PC with 2x AMD HD 6990, 880 MHz GPU ...
3
votes
2answers
48 views

Is there a performance difference when installing an OS on the last partition?

I have a laptop with Windows installed on a GPT hard drive. I want to have another partition to store data and yet another to install Linux Mint (or Ubuntu, still deciding). Should I install it on the ...
14
votes
5answers
16k views

What's wrong with disabling the Windows page file?

People say that you always need a page file, and that it will increase performance, but my Windows 7 is set to run without a page file. I simply don't understand why people say this - I have 6 GiB of ...
0
votes
0answers
13 views

DNS resolution takes too long

[Reposting here because it was deemed off-topic at Stackoverflow] This is regarding a home internet connection via a cable modem. All of a sudden Chrome takes ages to render a page. Whenever I type ...
2
votes
2answers
35 views

Why does my hard drive perform well in benchmarks but slow in applications?

My hard drive has been acting slow lately, taking several seconds to load an application. It's the Hitachi HTS723232L9SA62 (7200 RPM). I ran a benchmark and the speeds were in the 70 Megabytes/second ...
0
votes
0answers
38 views

Extremely slow USB transfer rate in ASUS Windows 8.1 USB 3.0

I have an ASUS N56JR. It has several USB 3.0 ports. I have 5TB back-up drive which I manually backup my files to. This slow transfer rate happened right after we had a power-outage during a ...
0
votes
0answers
3 views

Is HDFS concurrent reading less efficient than reading a replicated copy?

If I have two identical files A and B on HDFS, and then have two simultaneous read tasks on those files. Is scenario 1 faster? Scenario 1: read A + read B Scenario 2: read A + read A If the ...
0
votes
1answer
41 views

High disk usage after recovering from standby in Windows 7 when switching from one app to the others

I have a problem with my Windows 7 64bit (Sony VAIO Core i7, 6GB of RAM, 1TB HD with over 300GB of free space) that i hope someone can solve. I frequently use Visual Studio and other CPU/memory ...
0
votes
1answer
3k 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 ...
6
votes
3answers
316 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 ...
0
votes
0answers
132 views

Facebook load times are very slow, but other pages are fast, and >12Mbit/s up & down

I have measured 12 Mbit/s up and downstream. I have a wireless Network Adapter called Asus PCE-N53 (300Mbps 11n Dual band Wireless LAN PCI-E Card) and is connected to my local wireless router. I have ...
0
votes
0answers
43 views

Can't solve mysterious 20 seconds http delay

I read a few similar questions, but they seem to be always different somehow. The situation here is very puzzling: for a handful of websites, I get a roughly 20 seconds delay when requesting any page ...
-5
votes
1answer
45 views

Is my computer fast enough to play league of legends? [closed]

Do you guys think that a Intel Celeron E1200 Dual-Core Processor, with 2 gigabytes of ram is fast enough to play league of legends, provided that the rest of the system is good enough.
4
votes
3answers
2k views

Low RAM in Debian/Ubuntu causes complete hang with disk thrashing

I've been having this severe performance issue, both in Ubuntu 11.10, and Debian Wheezy: If one process uses up a great deal of RAM (say, 3700 MB out of 3900 MB), the system quickly becomes unusable, ...