0
votes
1answer
12 views

Why is my hard drive slowing down halfway through a read/write benchmark?

I'm using gnome-disks to do a benchmark on an old 5400RPM Hitachi HDD that I pulled from a PS3. It's connected to my computer through an external USB 3.0 enclosure. Here's the output graph from the ...
1
vote
0answers
36 views

What is Prime95 benchmarking?

I've recently had to benchmark the CPU performance of a variety of operating systems on identical machines. I've been using the 'benchmark' functionality of Prime95 to obtain a consistent test. I've ...
0
votes
2answers
50 views

Periodic FPS drops in games, regardless of graphis card

When I play recent 3D games (Battlefield 3 & 4, Tomb Raider, Saints Row 3 & 4, etc.) I experience periodic FPS drops, e.g. in Battlefield 3 from the average of around 70-80 fps to 20-30 fps; ...
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 ...
0
votes
1answer
95 views

How to tell, before buying, if a given graphics card will play Full HD video?

I am looking for the cheapest video card that would be capable of smooth playback of Full HD (1080p) video on a Full HD screen. An answer by @Mikhail on a related question briefly mentioned that: ...
0
votes
1answer
49 views

Benchmark performance 30% speedup in mains over battery operation?

This observation arose as I was evaluating the running time efficiency of various implementations of a prime sieve algorithm. The surprise was finding that differences between the best algorithms was ...
0
votes
0answers
20 views

Is there a way to run a job exclusively on a chip?

We've got a bunch of large (1TB+) NUMA machines at work and have been getting a lot of noise in benchmarking. We've noticed that run times for our application are very consistent from one run to the ...
1
vote
1answer
51 views

MIPS as a measurement of raw integer data processing

I'm looking for a way to contextualize generational differences in computing performance. Is this a correct application of the MIPS measurement? MOS 6502 - 0.500 MIPS at 1 MHz. As an 8-bit CPU it ...
0
votes
1answer
298 views

Clues to guess CPU performance for single-threaded tasks

Can one somehow guess how for example Intel Core i5-3320M @ 2.60GHz (dual core) and Intel Core i7-3612QM @ 2.10GHz (quad core) would compare on basic single-threaded tasks? I know this is problematic, ...
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 ...
0
votes
1answer
210 views

Multi-threaded execution of simple perl/python script

Some years ago a friend created a 'benchmark' (Note: Not a benchmark) by which wouldwhich we measure one raw aspect of computing power. Namely how fast (or indeed slowly) the computer could count to ...
2
votes
2answers
4k views

ZFS raidz2 performance issues read/write speeds on Freenas

I'm having some performance issues on my home backup FreeNas box using a raidz2 configuration and I am wondering what might be causing it (not enough processing power, eco drives?). It's running: ...
4
votes
2answers
683 views

Is it necessary to tweak config for a new SSD?

I've read some years-old posts that say you should tweak some options in Windows to get the best performance. But then I read that this is no longer necessary with today's SSDs. I installed a new ...
1
vote
1answer
317 views

Intel's i7 2700k vs 3770k on Ram Frequency

The major difference (IMO) between the two is the max RAM frequency. 2700K = 1333 MHz 3770k = 1600 MHz Will this make noticeable difference and if yes in what type of applications will I ...
2
votes
1answer
58 views

Searchable disk benchmarks

I'm trying to find a web site that has a searchable database of hard drive, SSD, and flash drive benchmarks. Ideally I could search by model number and get the following information: Seq read max, ...
39
votes
8answers
46k 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
vote
1answer
318 views

If a CPU overheats, is it possible that its performance will subsequently diminish as a result?

I recently built a system with an Intel I5 2500K processor. I made the goofy mistake of not perfectly securing the stock heat sink onto the processor. One of the clips wasn't quite all the way in, so ...
10
votes
2answers
12k views

How come my Intel 520 180GB SSD performs extremely poorly?

I recently installed a new Intel 520 series 180GB SSD in my brand new MacBook Pro. The system is as follows: Model: MacBook Pro 15-inch, Late 2011 (MacBookPro8,2) Processor: 2.4 GHz Intel Core i7 ...
1
vote
3answers
2k views

ssd running slow

I have a Kingston SSDNOW on sata 2. Doing a benchmark i get these results: As can be seen, the sequential write performance is terrible. Below even 100 MB/s. Also why do the tests labelled 4k show ...
1
vote
1answer
537 views

Software to detect hardware bottlenecks?

Is there software available that I can run on my system to detect possible hardware bottlenecks (CPU, RAM, Graphics, …)? p/s : I'm running Windows 7
2
votes
2answers
386 views

Lots of DDR2 and older CPUs or small amount of DDR3 and a newer CPU?

Building a new desktop PC, for some gaming and lots of Virtualization, I have come across a nice old machine I can use. It has two CPU slots populated by dual core AMD Opterons, and 16Gb of DDR2 RAM ...
3
votes
4answers
4k views

How to test router-to-PC connection speed?

Is there a way to benchmark how fast my router is connected to my PC, independent of the internet? I've had slower-than-usual internet-based benchmarks, and I'm having a hard time figuring out if ...
3
votes
2answers
947 views

Open Source Linux system benchmark software

How can I run a system benchmark in a Linux installation? I'd like to do a full test with the core system functionalities like: CPU performance Memory performance Disk / IO performance Network ...
1
vote
2answers
818 views

Does chunk size affect the read performance of a Linux md software RAID1 array?

This came up in relation to this question on determining chunk size of an existing RAID array. The general consensus seems to be that chunk size does not apply to RAID1 as it is not striped. On the ...
0
votes
1answer
356 views

Suggested benchmark for testing CPU footprint of antivirus software

Our organization is currently running Symantec Corporate Antivirus, which is rumored to be a big resource hog. I know that we do have a lot of older machines that are running slow. Our PCs are all ...
1
vote
0answers
1k views

Low 'Burst Rate' from SATA drive in HDTune?

I recently upgraded my laptop's v slow hard drive to a seagate momentus 7200. Everything is working fine, but I'm a bit confused by these benchmark results: The burst rate is significantly less ...
6
votes
1answer
1k views

How to benchmark kernel (-Os vs -O2)

It seems logical to me that on a 64-bit kernel compiling it to optimize for size might help overall. (My distro of choice uses -O2) It has the benefits of more registers and memory and perhaps less ...
1
vote
1answer
216 views

Compare two computers

I would like to compare my notebook with my iPhone (about power (speed)). i need something that is really "official" or let's me make a clear statement because I'm using it for a bachelor thesis. is ...
1
vote
1answer
957 views

Should I put new DRAM in DIMM1 and move old DRAM to DIMM2?

I am using an Acer 4710g laptop, with 1G RAM on DIMM1, 512MB RAM on DIMM2 (or DIMM3, not sure) I got a new 1G DDR2 PC-5300 DRAM. Should I move the old 1G RAM to DIMM2 and put new one in DIMM1? The ...
0
votes
2answers
409 views

SiI 3114 vs. ICH7R RAID performance

I just got two new WD5000AAKS 500GB SATA 3.0Gb/s drives, and I need to put them in a RAID-0 array (I know that motherboard-RAID generally isn't the best for speed increases, but I have little choice). ...
3
votes
2answers
2k views

Is it normal for Windows Software Raid (Mirroring) to slow a drive's performance?

I've been doing some performance tests on a few of my drives lately, trying to figure out which combination of drive/raid-level(or not) will give me the best performance (for Hyper-V incase anyone's ...
2
votes
4answers
2k views

Why doesn't my RAMDisk performance match my HDD's performance?

I've been thinking about using temporary GIT repositories on RAMDisks (using DataRAM's ramdisk) as a kind of object store. I was interested to see whether it was worthwhile, so I ran a simple ...
0
votes
1answer
71 views

can benchmarking burn computer components

I only have the ordinary cooling mechanism of a computer. 1 fan for the power supply and two fans that share the same cable. Can benchmarking my computer lead to burning of the processor or the ram or ...
0
votes
2answers
63 views

What to do before trying to benchmark

What are the things that I should do before trying to benchmark my computer: I've got this tools for benchmarking: 3dmark cinebench geekbench juarez dx10 open source mark Do I need to have a full ...
0
votes
2answers
240 views

How do I profile the startup process in OS X 10.5?

When I bought my MBP 2.2 GHZ in 2007, it got from dead to an active dock in about 18 seconds, and now it takes about 1:30 to get a fully responsive home screen. I want to find a way to profile the ...
1
vote
2answers
174 views

Please recommend tools for PC, browser, home network performance problems? [closed]

My client is experiencing some odd response behavior in their browser for the past few days. Classic, "nothing has changed" so I am starting at ground zero. Browsing a website will timeout or take a ...
6
votes
2answers
973 views

Benchmarks relevant for a Visual Studio .NET development workstation

I am developing a system with Windows 7 64-bit, Visual Studio and Sharepoint on a virtual workstation on some kind of VMWare server. The system is painfully slow, with Visual Studio lagging behind ...
8
votes
4answers
25k views

AFP, SMB, NFS which is the best data transfer protocol?

I have a computer with large hard disks running Gentoo. I have to serve med/big files via a wired network to Apple devices (all of them running OS X). Which protocol is the best for the following ...
1
vote
1answer
179 views

How can I calculate saturation?

I recently setup a web server on my machine. Someone told me that I should calculate saturation to see how good my server really is. Are there any scripts that let me calculate this?
2
votes
1answer
1k views

Does anyone still use Iometer?

Does anyone still use Iometer? It seems helpful, but I'm not sure if it's useful for the thing I am working on. I am trying create a benchmark computer performance test that can be run before and ...
1
vote
3answers
2k views

Testing hard disk read write speed

I want to compare the hard disk read/write speeds on two different computers. Is there free software that does this?
14
votes
2answers
32k views

Good OS X Hard Drive Benchmark

What software can provide some insight on the performance of the hard drive in my MacBook Pro? I would be interested in both sequential and random read and write performance. This is in the context ...
17
votes
7answers
2k views

How to measure disk performance? [duplicate]

A friend has asked me to perform maintenance oh his computer. The described symptoms point to a performance issue with the hard drive. I want to objectively confirm this suspicion by measuring the ...
3
votes
7answers
2k views

What are the best free(ware?) PC performance benchmarking options out there? [closed]

I'd like to get a rough idea on the performance of my machines, so quite simply: what would you guys recommend as decent, free benchmarking software? Please specify whether your suggestions are good ...
3
votes
3answers
102 views

Measuring performance before and after upgrade

What is the best free software to measure computer performance? I want to make couple of small upgrades and i'd like to see if they were worth the money/time spent.
14
votes
3answers
4k views

Bad NTFS performance

Why is it that NTFS performance is so lousy compared to, for example, Linux/ext3? Most often I see this when checking out (large) source trees from Subversion. Checkout takes around 10-15 minutes on ...