Questions tagged [benchmarking]
The process of running a computer program to assess performance.
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How to objectively measure RAM latency impact on performance
I'm already aware of these questions:
how to know if RAM is my bottleneck
How to determine if CPU or RAM or DISK is the bottleneck on Windows 7
How can I know if the speed of RAM is the bottleneck ...
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Is it ok that linpack has different residuals on different processors? Why is that so?
This is on a CPU that is not overclocked. Background, not that much relevant to the question:
When I assembled a new PC, the pins of the processor were slightly bent so it didn't fit into the socket. ...
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How to use bench filter for sidechaincompress filter of ffmpeg
I would like to use bench filter for sidechaincompress filter. However, it's hard to make bench filter work. Here is original command:
.\ffmpeg.exe -benchmark -y -i .\main_mono.mp3 -i .\...
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NVMe PCIe SSD using 2 lanes instead of 4
I recently installed an WD Blue SN570 500GB NVMe SSD in my HP laptop and I did a benchmark test in crystal disk software and got 1700MBps read speed but this SSD supports 3500MBps.
When I checked in ...
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SSL read failed error on running ab command
When I run the following command on Mac terminal:
ab -n 1000 -c 200 "https://someurl..."
I get the following error:
This is ApacheBench, Version 2.3 <$Revision: 1901567 $>
Copyright ...
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How to measure standard compute load of a process
I want to measure the CPU load of an application I am developing. I need to measure the CPU load in a processor and system neutral way. So, for example, if top shows the process uses 277% CPU at peak ...
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Why does the performance of a hard drive with ext4 vary over time?
I have a strange problem with a Western Digital HDD.
The performance of this drive varies pretty significantly over time. The observed range goes from ~50MB/s to more than 100 MB/s. The performance is ...
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Intel I5 12500H underperforming
I have recently purchased a new laptop with Intel I5 12500H inside. I bought it as a replacement for my older laptop that had Ryzen 7 5700U inside.
Most benchmarks show that Intel should outperform ...
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How can I simulate/generate mild workload on my Windows laptop?
I've been asked to have a look at a laptop (intended for donation), and I want to estimate the state the battery is in. For that purpose, I would like to simulate a typical, "mild" workload -...
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Cheap SSD: Slow Speed Issue
In the beginning of the year I've bought a cheap SSD SomnAmbulist 120GB. After a couple of benchmarks, I've noted some strange throughput measurements. Briefly:
Initial Benchmark | image
Just after ...
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Memtest86 reports same read speed / different write speed with single and dual channel ram. How?
This is my old desktop pc with:
Intel i5-7400 / 16G+16G (Corsair CMK16GX4M1A2400C16 ) / GA-H110M-H mobo.
I did Passmark Memtest86 Ram Benchmark with single (16G) stick and double (16G+16G) sticks and ...
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Speed difference of CrystalDiskMark drive performance test for USB enclosure vs motherboard SATA connection - Normal or an issue?
I purchased a USB 3 SATA 2.5" drive enclosure, inserted a platter-based hard drive, and connected the enclosure to a USB 3.x port (if it's important, I can determine x).
Using CrystalDiskMark v8, ...
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Storage Benchmark/Testing Solutions for FSX for Windows File Server
We have a PoC that we setup where we have Amazon FSX for Windows File Server connected to our DFS setup. This a rebuild of a previous PoC done by the previous team that was a disaster. Essentially ...
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New external drive already slow to mount and to read/write
I just bought a 5TB Seagate STJL5000400 external USB hard drive.
It takes at least 20 seconds to mount before being available to browse folders in the file manager and writing / reading is so slow.
I ...
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How can sysbench fileio throughput be only 6.92MiB/s on fast NVMe disk?
I followed guide to benchmark WD_Black 1TB SN750 SE NVMe disk (read: 3600 MB/s, write: 2830 MB/s) on HP EliteDesk 800 G2 (i5-6500T).
$ sysbench fileio --file-total-size=8G prepare
…
8589934592 bytes ...
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How to troubleshoot this HDD performance issue?
I purchased WD60EZAZ for usage in Synology DS118 NAS. I put around 500GB of data onto the disk, however I noticed very slow read/write performance.
I decided to run some tests on the disk directly, to ...
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Inconsistent 3DMark CPU Score
I completed a new Ryzen based PC build, and have been trying to optimize it by doing some minor overclocking. While doing so, I've noticed that I'm getting inconsistent 3dMark CPU results that are ...
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Alienware 13 R3 - laptop shuts down without warning under heavy load ONLY when on battery
I've been an AW13R3 owner for almost 2 years, i bought a used model without warranty in order to have something to bring with me during job travels.
For a year or so the laptop has been performing ...
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Testing Devices in Hostile Wireless Networks
I'm attempting to benchmark the power usage of a device that sends data over wifi. This device uses some logic to attempt to retry sending data in the event of network failures. To better simulate the ...
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Do apps installed on SSD run faster even if the OS is installed in HDD? [closed]
Suppose a computer is running on an OS installed on its HDD. Now if we install other softwares on the SSD attached to the same computer instead of the HDD, will those softwares perform better than ...
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Testing health of laptop hardware
I recently bought a second-hand laptop and I have installed Ubuntu 20.04 LTS on it.
Everything appears on the surface to be working fine, but before I switch over to using this laptop as my main ...
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Very low random IOPS reported on SSDs
I have two Samsung SSDs in my computer, an 840 Pro and 860 Evo, reporting very low random IOPS numbers, about 1/5 of the nominal, connected via a SATA3 interface, using an i7-3770K CPU in a P8Z77-V ...
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Windows 10 UDP Socket Benchmark a lot faster in safe mode
I made a simple SendReceive benchmark for UDP sockets and noticed, that the perofrmance in Windows safe mode is considerably faster than in normal mode. Why is this the case? In normal mode I was very ...
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Too low bandwith in RAM benchmark
I'd like to ask for help in interpretation of Memtest benchmark. I have G.SKILL 16GB (2x8GB) 3200MHz CL16 Ripjaws V Black. I've done some benchmarking and here's a result. It's showing under 16000MB/s ...
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231
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Ways to flush page cache without reboot?
I am running a benchmark on Disk IO + data compression, and the benchmark to be accurate has to include time from disk fetch. The issue being that once I compress a file once, I can't do a second ...
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129
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How can PC's be bottlenecked by GPUs if they have gotten so much faster than CPUs over the last 5 years?
I am thinking of upgrading my gaming PC. Currently, my specs are:
CPU: Intel Core i5-4690K,
GPU: Nvidia GeForce GTX 970
According to this, I am currently slightly bottlenecked by my CPU. I am ...
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is there a method to benchmark only the filters in an ffmpeg chain, ignoring the encoder operations?
I've found a number of examples of how to use a null muxer to prevent writing the actual output to disk, which saves the disk space and all the time/work to do the writes themselves. I'm interested ...
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Precondition SSDs
Are there still good reasons to "preconditioning" your SSD, especially before doing benchmark?
And if so, why?
Today we have better SSDs and almost all system-configurations support TRIM.
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Benchmark turned out inconclusive, need help troubleshooting
I just got a new CPU/Mobo/RAM after a long overdue upgrade. Everything boots and seems to be working normal. My last upgrade will be a new GPU but not right now, so in the meantime I ran a ...
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Why does a server CPU perform faster tasks than a Macbook Pro CPU with the same benchmark score? [closed]
Given the following CPUs and GeekBench scores:
Amazon EC2 z1d.large instance: Intel Xeon Platinum 8151 4061 MHz (1
cores) Single-Core Score: 1094, Multi-core score: 1300
Macbook Pro Laptop: Intel ...
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Why is my SSD performing so far over spec? [duplicate]
While setting up a new laptop, I plugged in an SSD from an old computer, a 1TB Samsung 840 EVO 2.5" SATA III. This drive is rated for 540 MB read / 520 write according to Samsung.
At first it only ...
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How can I recreate CrystalDiskMark's disk benchmark on Linux?
I want to be able to test the read/write performance of my disks on Windows and in Linux, and get as accurate a comparison as possible.
On Windows I'm using CrystalDiskMark, because hey, it's OSS and ...
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Are the Geekbench multicore scores done using embarrassingly parallel processes?
For each processor, the benchmarks at geekbench.com present both a single-core and multi-core score. For example, this 64-core processor has a single-core score of 1220 and a multi-core score of 23688....
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Benchmark an Truecrypt-encrypted HDD
I have a TrueCrypt encrypted Disk (Full Disk encryption of a non-system Partition), which looks like this while being mounted:
Question is: What happens when I try to benchmark this HDD using HDTune? ...
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Displaced SSD drives benchmark results
I have these two ssd drives:
SATA3 Samsung SSD 850 PRO 128 GB
NVME Samsung SSD 970 EVO Plus 240 GB with PCIExpress adapter
It seems the benchmark results are displaced. As you know the sata3 model ...
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Difference between the MacBook CPUs
I have an old 2011 13-inch MacBook Pro and I am thinking to buy a new one. I am wondering if the difference between the CPUs is different. I checked the benchmarks here.
MacBook Pro (13-inch Early ...
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Very sporadic videocard benchmark results on new laptop. Cause?
I just got a new Thinkpad P53 with a Quadro RTX 3000 graphics card (roughly equivalent to the GeForce RTX 2060 consumer card), and am getting sporadic benchmark results for the graphics card. 3D Mark "...
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Slow Read/Write speeds on Samsung 970 Evo Plus after switching to a new motherboard?
I think the problem might be that the device is using PCIe Gen. 3 x 2 instead of Gen. 3 x 4 PCIe? Is there any way to change this in the bios?
I am running a PC with a 1TB Samsung 970 EVO Plus that ...
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How to benchmark two Windows PC's performance
My old work laptop is a HP ProBook 640 G2 running Windows 7 Enterprise and has a Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz, 2401 Mhz, 2 Core(s), 4 Logical Processor(s) with 8.00 GB of RAM.
My new work ...
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Mongo 2.6.12 VS Mongo 4.0 benchmark
I have problem, I use the old 2.6.12 version of mongodb on a new computer and it does not show high speed results and I do not know why. Mongo 2.6.12 doesn’t even try to use my computer at 100% using ...
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Temporary freezes even on small load
I have the following setup:
ASUS B360M-E TUF Aura Sync
Intel Core i7-9700K 4.9GHz
16GB DDR4 3000 MHz Dual channel memory
NVidia GeForce GTX 1660 6GB DDR5
500GB SSD Western Digital Blue
Chieftec E85 ...
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Can I force a specific unit of measure for sync percentiles in fio output?
I'm using fio 3-13 to benchmark an SSD. The job file contains multiple jobs to be run sequentially (with the stonewall parameter), but they all contain fdatasync=1. As a consequence, the output ...
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IOmeter v/s FIO on Windows VM
I have a Windows VM which have disks on high performance storage. I have both FIO(http://bluestop.org/fio/) and IOmeter(http://www.iometer.org/) installed on it. I want to be able to saturate the ...
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Load Balancer Poor External Query Results in Benchmark
I created a Load Balancer. When testing internally in the Load Balancer Server using wrk, I received a benchmark of 300,000 Requests Per Second.. Then, I created a droplet in Digital Ocean and ran the ...
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Low SSD Performance Adata SU650
I recently got a new computer and am slightly concerned by the benchmark scores I am getting with a CrystalDiskMark and AS SSD. I have an Adata SU650 240 GB SSD.
Here are the scores I get in AS SSD:
...
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What are the differences between a physical and virtual RAM disk?
I'm using ImDisk to create a RAM disk for the purposes of creating an environment where I can run some performance benchmarks and ensure that all benchmarks run are consistent, by making sure any ...
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Benchmarking bash commands with time and tee
I have a directory containing more than 80GB of simple text file databases that I anticipate needing to grep through often. For this reason, I'm trying to create some tests to compare GNU grep with ...
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Router performance tests
628/5000
Hello all,
I am looking for tools or ways to test router performance. I am not only concerned about WiFi bandwidth, coverage and etc, but also about the performance of the hardware itself in ...
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Is that normal behaviour of ZOTAC AMP Extreme Core Edition 1080 Ti (ZT-P10810F-10P)?
Is it okay that ZOTAC AMP Extreme Core Edition 1080 Ti GPU with i7 7700 CPU gives:
20~30FPS in Sniper Ghost Warrior 3
30~40FPS in Fallout4
30FPS in GTA V
( at 4K with ultra graphics? Isn't it slow ...
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452
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Detect and qualify flash memory (sd card) wear
What is the best way to detect and evaluate/qualify flash memory wear that usually occurs after a lot of data has been written the flash? I mean especially a wear caused by continuous writes by dash ...
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