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

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4
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0answers
70 views

100% SSD Activity, 0 R/W Speed: System Hang Issue

So I've just been experiencing a weird issue with my system where it hangs and it is very unresponsive at random intervals of time (in fact, the first clue that I had an issue was when boot to desktop ...
4
votes
0answers
432 views

Poor write performance on ecryptfs

I did a bit of benchmarking with ecryptfs and dm-crypt, and got some interesting results. All the following were done with a Btrfs filesystem, using dd to copy a ~700MB file to/from a ramdisk with the ...
4
votes
0answers
310 views

Copying from WHS 2011 backup very slow

I'm setting up a new computer to replace one of my old ones, and part of doing so is extracting my Home folder from a backup I made just before wiping the old one. However, copying from the mounted ...
3
votes
0answers
47 views

How to load entire process memory from swap quickly (linux)?

I run a bunch of CPU-hungry processes in parallel, they normally use a few GB of memory each. From time to time they allocate large amount of memory too (say 150-250GB). Usually at most one of the ...
3
votes
0answers
37 views

MMC card reader slow on Linux

I have been searching in and out on google and the forum about the issue I am experiencing with Linux, with no luck so far. This is my system: System: Host: wally Kernel: 3.13.0-37-generic x86_64 ...
3
votes
0answers
152 views

Ridiculously slow read/write between two SSDs (Linux)

So I have a Kingston SSD (120Gb HyperX 3K; SH103S3/120G) that is about two years old and just picked up a new Kingston SSD (240GB SSDNow V300; SV300S37A/240G) to go along with it. I’m trying to ...
3
votes
0answers
56 views

Can CPU performance be permanently be degraded by running at high temperatures?

My question is specifically if a processor can perform worse after extended periods of being too hot. I've had my laptop for four years and my cpu would regularly get to 85C+ watching videos or using ...
3
votes
0answers
193 views

Intel RST driver - magic performance boost (only) up till version 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 ...
3
votes
0answers
563 views

LSI SAS 2308 MPT2SAS Linux Read/Write performance

LSI SAS 2308-8e (6Gb/s per Lane) PCIe 3.0 card. Average Read/Write Raw performance for 4 SSDs is very low around 430 MB/s (Expected 2 GB/s).I am having Intel Core i3 with quad cores and 4 GB RAM. ...
3
votes
0answers
2k views

Windows 8.1 Process Migration Limits CPU frequency scaling

Summary: I've noticed that with Windows 8.1 on my laptop, running a single CPU intensive program does not cause the CPU frequency to scale to its maximum value. I suspect that this is because of ...
2
votes
0answers
67 views

SSD causes UEFI to load very slow on reboot (~15 sec)

I've recently bought an ADATA Premier Pro SP900 128 GB M.2 . It works fine , it's fast , but I have one issue with it . When I start the laptop , UEFI loads fast in a second or so , goes to my ...
2
votes
0answers
100 views

Is a VeraCrypt partition slower?

I just got a new external hard drive. I want to create an encrypted partition on it with VeraCrypt. I did the same thing with a similar drive. I just copied a file over to it and the speed was about ...
2
votes
0answers
616 views

Windows 10 keeps showing 100% of CPU usage no matter what

I'm having a curious issue in my Windows 10 Pro 64: the task manager keeps telling I'm using 100% of CPU no mather what: it's just there, fixed, doens't matter which are the consumptions of the listed ...
2
votes
0answers
454 views

explorer.exe, windows 10 slow login with one user

I have 3 users on my computer using Windows 10. One of them recently became slow to login (6 seconds instead of 2). I looked in event viewer and both users have the same history when loging in. It ...
2
votes
0answers
63 views

How to increase performance of Adobe Creative Suite 6 via hardware upgrade?

A friend (who doesn't have a SO/SU account) has had a licence of Adobe CS6 for some time. Mostly uses Photoshop and InDesign. He doesn't want to upgrade to Creative Cloud for the reasons such as ...
2
votes
0answers
69 views

Wrong total ram ( 8 GB installed, 4 appears and used in total )

I have this motherboard: GA-X38-DQ6 which can hold up to 8 GB of Ram. When I got this computer it had 4 memory sticks, 1 GB each, and everything was fine. Now, I have two sticks, 4 GB memory each: ...
2
votes
0answers
552 views

MIcro SD card gets slower after partial fullfillment

I have a micro SD card from Kingston - 32GB class 10 When i'm writing on it using usb card reader or my phone, average write speed is about 6MB/s But after about 10GB of data written into it, ...
2
votes
0answers
809 views

How to force the Linux kernel reclaiming cache memory rather than using swap?

I have a PostgreSQL-driven web service on two Debian servers, one a vhost running Linux kernel 3.2.0-2 with 2GB RAM and the other a dedicated server running Linux kernel 2.6.26-1 with 6 GB RAM. ...
2
votes
0answers
878 views

How to improve the wifi performance of openwrt

If my computer download through my tplink router, the speed is 10Mbps, if through openwrt router, it's 5Mbps. Here is wifi information: root@localhost:/etc/config# iwconfig wlan0 wlan0 IEEE 802.11bg ...
2
votes
0answers
658 views

HDD very slow performance after full copy from SSD

The PC: Core i7-4770, 16GB RAM. There are 120GB SSD and 1TB HDD (new without any bads). On the SSD I had Windows 8.1 installed with all other stuff. Someday all programs exceeded 120GB limit and I ...
2
votes
0answers
178 views

Show dial up connection status in Task Manager

In Windows 8.1, Task Manager shows Wi-Fi, Disk, CPU usage graph in Performance tab. But, it doesn't shows usage of a dial up internet connection. How can I add dial up stats in task manager. Here are ...
2
votes
0answers
147 views

some programs running much slower after mscvrt runtime redistributable delete/reinstall

UPDATE: It appears that there may have been an unfortunate coincidence. It seems that right around the time I was doing these builds and deletions of redistributables, my laptop power adapter was ...
2
votes
0answers
403 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 ...
2
votes
0answers
223 views

What desktop computer hardware specifications are most important for database heavy applications?

I am purchasing a new personal desktop computer with the hope of improving performance for database-heavy applications (mostly data mining). I will want versatile hardware for all sorts of future ...
2
votes
0answers
748 views

Too much disk activity READING event logs

On Win 7 SP1 x64, I notice that sometimes the disk gets so busy that Windows becomes unresponsive for minutes at a time. I referenced this problem on SU in the past once. I've since replaced the ...
2
votes
0answers
533 views

Super slow SDD write speeds with RAID 1

I have a very new computer system, configured in RAID 1, but was surprised that the write speeds were extremely slow! Here is a snapshot of my computer setup: Motherboard: Asus Z9PE-D8 WS ...
2
votes
0answers
170 views

How much performance reduction is ok for a linux router?

I am having thew following (simplified) setup: I have a private Subnet where my PC is located. The subnet goes over a virtualized server into the internet. The server uses internally two subnets: One ...
2
votes
0answers
420 views

Problems with buffered disk read performance

I have two identical linux boxes (running ubuntu 13.4) with identical hardware including a WDC WD20EARS hard disk. I noticed that my main system got unsually slow and performed a number of HD tests. ...
2
votes
0answers
1k views

Buffalo Router WZR-HP-G450H slow and unstable

I bought a Buffalo WZR-HP-G450H router. Problem 8 device connected to it via wireless. When power it on, the connection speed is very fast, about 5MB/s while transfer files between a wired server ...
2
votes
0answers
104 views

Low bandwidth only on Windows XP

Hi I own really old PC and I've 10Mbps/1Mbps Plan. Internet is distibuted with router over whole house. The old PC uses 802.11b (up to 11Mbit/s download) Wifi card and has Windows XP+SP3 installed. ...
2
votes
0answers
644 views

nfsstat authrefrsh almost equal to calls

I mounted a dir from my server through nfs (v3) on my LAN and if I run nfsstat I get # nfsstat -rc Client rpc stats: calls retrans authrefrsh 2527772 0 2527782 Is this ...
2
votes
0answers
982 views

When tab groups are loaded, Firefox becomes unresponsible for minutes (Unresponsive script)

I have several tab groups (~ 20) in Firefox. I can start the browser without any problems. However, as soon as I … click at the "Group tabs" icon in the toolbar, or right-click on a tab and hover ...
2
votes
0answers
323 views

Improving Chrome performance on OSX

There are a number of sites that do not display properly on Safari and I need to switch to Chrome. Although when the content of the sites requires flash player, Chrome will consume a significant ...
2
votes
0answers
415 views

Microsoft Security Essentials: keep download scans but disable local activity scans

In Microsoft Security Essentials, I used to disable "Monitor file and program activity on your computer" but enable "Scan all downloads." Now, Microsoft Security Essentials (MSSE) 4.0 removed the ...
2
votes
0answers
78 views

Which Windows services and startup programs can I disable/modify to optimize performance/security?

For Windows Vista SP2 and Windows 7: I use this stand-alone (no LAN) computer at home exclusively to browse the internet, nothing else!.. I have another computer I use for development and testing ...
2
votes
0answers
109 views

Laptop is super slow on network

So on our network we have a bunch of wireless macs and window Operating laptops, we have a network setup with 802.11g,b,n. All the laptops seem fine except one which is only getting speeds of 54Mb. I ...
2
votes
0answers
101 views

Have anybody tested R multicore packages on 10-core Xeon how do they scale in comparison with case of 4 core machine?

Have anybody tested R multicore packages (for example : parallel, multicore, snowfall, foreach) on 10-core Xeon ? How do they scale in comparison with case of 4 core machine ? What algorith have you ...
2
votes
0answers
977 views

Can I disable Windows 7's indexing/scanning of dvd contents?

When I try to copy data from a DVD on my Windows 7 machine, I keep running into this problem. I open the DVD drive in windows explorer to browse the files, select the ones I wish to copy then paste ...
2
votes
0answers
761 views

Moving files to outside of hard drive platters?

Currently I am working on cheap ways to improve my hard disk performance on my PC. I know that one way to do so is short stroking, but I would like to utilize my entire disk, not just part of it. I ...
2
votes
0answers
45 views

Are there guidelines for the performance implications of adding multiple usb/firewire drives to a Mac?

I have noticed that I get a significant performance drop on a Mac Pro with more than 5 daisy chained firewire 800 drives. Task switching grinds to a halt, and the machine often beachballs between ...
2
votes
0answers
956 views

PowerPoint really slow for A0 size poster; how do I speed up?

I'm making a poster of my physics research project for a conference. I don't have time to learn LaTeX at the moment, and I need to be able to type inline equations within text boxes - the only ...
1
vote
0answers
28 views

Intel PCM ( Performance Counter Monitor ) - Low hit rate for LLC

I am having Intel Xeon D-1520 CPU I tried to run Intel PCM to get the the L3 cache miss and hit ratio. L3MISS: L3 cache misses L3HIT : L3 cache hit ratio (0.00-1.00) Core (SKT) | EXEC | IPC | ...
1
vote
0answers
17 views

Slow vagrant box, how to improve this?

We've built a vagrant box for our development box and we are facing some latency issues. Issues: Assetic:watch is being slow Overall application access in (app_dev.php) is slow Using "find" command ...
1
vote
0answers
19 views

File copying much slower than rated Firewire speed

While copying a lot of files to an external hard drive using Firewire I notice that the copy speed is a lot slower than the Firewire data transfer rate. The supposed transfer rate for Firewire 400 is ...
1
vote
0answers
49 views

Why is my new computer benchmarking (and performing) much more slowly than my old one?

I recently purchased a new work computer that I use mainly for scientific computation. Supposedly, it is a beast. Here are some relevant specs: Processor 48x Intel(R) Xeon(R) CPU E5-2670 v3 @ ...
1
vote
0answers
75 views

Eclipse Mars slows down Windows 7 interface

On a two pretty modern PCs I recently started to experience a strange problem. When I run Eclipse Mars, the Windows 7 GUI suddenly slows down, i.e. scrolling in Chrome, dragging the windows etc. I'd ...
1
vote
0answers
361 views

High Memory usage in Windows 10

I cannot figure out whats been just eating up my RAM lately. I tried looking with poolmon. It shows that the highest usage is Proc. So after searching for a possible driver issue. findstr /s Proc . I ...
1
vote
0answers
29 views

Ubuntu 12.04 LTS - SIL3124 - Hard drive read at 2.5MB/s

I have a headless media server that I’ve been using for several years now. It’s been entirely reliable, but some time ago 2 of the 4 hard drives started running very slowly. The two slow functioning ...
1
vote
0answers
82 views

Windows 7 bizarrely system slows down around 15 minutes after boot

I recently installed new hardware in my desktop rig (CPU, MB & RAM) and did a fresh Windows 7 install. The recipe for pure happiness one should think, but sadly I’ve run into a really frustrating ...
1
vote
0answers
5k views

Internet Explorer 11 became very slow after upgrading to Windows 10 plus some updates

Recently I updated my Windows 7 x64 to Windows 10 Pro x64. At that time I used Internet Explorer 11 and it worked fine. But yesterday I open it again to access the same website of before (the Banco ...