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Questions tagged [benchmark]

Benchmarking is the process of gathering data about the performance of a system in different scenarios to measure the impact of changes to the system, to compare the system with other options, or to determine maximum capacity.

Benchmarking is the process of gathering data about the performance of a system in different scenarios to measure the impact of changes to the system, to compare the system with other options, or to determine maximum capacity.

Benchmarking is a multidisciplinary process and can require management, engineering, operations, data science. and user experience expertise.

A key concern when benchmarking is making sure the tests performed are analogous to how to system is actually used. When benchmarking a server, the following metrics may be considered (in addition to countless others):

  • Ping response time
  • Average Load
  • Number of Dropped Requests
  • Number of Concurrent Connections Possible
  • Power Consumption
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small lan throughput test

My house is Cat6 cabled for ethernet. I want to do some speed measuring. Background: Below the stairs is a small server room for the router, DSL modem, a EEE-Box (ubuntu) and a LaCie-Nas used for Backups (TimeMachine). There are Linux (3), OS X…
lexu
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Benchmark different kind of SQL database :What's the best test to do?

I have an application that i can configure to get data from different kind of SQL database server, for example Postgres, MSSQL, MySQL, Firebird ... I must install this application and the database server on windows enviroment, before choice the…
aleroot
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why is iometer performance slower after first run?

I'm doing some benchmarking with IOMeter, and I'm seeing a consistent and susbtantial drop-off in performance after running the first test in my VMWare environments. These drop-offs are about the same on the three VMs I've tested on, which makes me…
Dan
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How to test server throughput

I've always used apache benchmark to try to get a rough idea of how many requests/second my server can handle. I read that it was good, and it seemed to work well. Enter node.js, which is fully event-based, so it never blocks. If I run apache…
Sean Clark Hess
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CPU Benchmark - Set Load, usage spikes

I need a CPU benchmark to test the performance impact of various power management policies. I must be able to set the load (e.g. to get a relatively steady load of 20%-30%-60%) and to simulate usage spikes (set frequency of spikes). I would also…
iulianchira
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Slow read speed in ZFS mirror (slower than write speed, and very slow for small chunk sizes)

I have a server running debian on top of a ZFS 3-way mirror of Exos X18 18TB (ST18000NM001J). I'm benchmarking it and I'm finding some surprises for the read rate under certain conditions. But first, for the benchmarking I created a benchmarking…
Héctor
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How to calculate log per second?

I have a log management system in which the Clickhouse database has been used alongside metrico/qryn, rsyslog on all the servers (Debian 11) send gathered logs from the system and applications to promtail for labeling and then promtail sends them to…
Sinux
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Big performance gap between two similar servers in mysql-percona 5.6 ubuntu

I cannot figure out reason of performance difference between two (three?) similar percona 5.6 instances. I prepared some tpcc-like benchmarking using sysbench and among 3 similar servers, one is making 30-40% better result. As far benchmark it is…
atapidriver
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Benchmarking AWS outbound Internet bandwidth (egress) "up to 25 Gbps"

We conducted our tests on c6gn.2xlarge AWS instances located is us-east-1 region, which are advertised in AWS documentation to have a network performance of "Up to 25 Gbps" with a baseline bandwidth of 12.5 Gbps. We ran UDP tests with iperf3, from a…
Eric
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Measuring bandwidth from a server - determine capacity of network

I am building a system that will serve video content, and am trying to determine the maximum throughput I can achieve. I have been using iperf3, and initially, from a separate VM (in the same data-centre), I get great bandwidth (7Gbps). Then I…
craigmj
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Does Throughput calculated adds up using multiple (all active) physical adaptor

I had a network adaptor of speed 20Gbps. By stressing this adaptor using one of benchmarking tools (netperf is the tool which I used), I was able to get ~18Gbps which is well accepted. Now, after installing one more adaptor of the same speed i.e.…
Chandan Hegde
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How to correctly benchmark sequential read speeds on 2.5" hard drive with fio on FreeBSD?

Like suggested in https://askubuntu.com/a/991311 I tested the read speed of a 2.5" spinning hard drive on a TrueNAS/FreeBSD system. For "Sequential READ speed with big blocks": fio --name TEST --eta-newline=5s --filename=fio-tempfile.dat --rw=read…
Andept
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Testing zpool IO performance

To test the write speed of a 2.5 inch SATA3 spinning hard drive (some old Seagate one) installed in my TrueNAS system I used dd if=/dev/zero of=/mnt/pool/test.dd bs=1024 count=1m (found this in several forums and posts across the Internet). This…
Andept
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Benchmarking vCore Performance

A certain public cloud provider is phasing out its old small VM instances and replacing it with a new category of instances. While the old model lists "vCore 2.4 GHz" the new model features "performance can vary slightly over time" and lists no…
mvw
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Benchmarking ssd MySQL write performance: sysbench oltp_write_only vs write iops, fio. Madness

I've benchmarked about 10 diffrent ssd devices with sysbench oltp_write_only.lua and I found no coroleation whatsoever between max sustained write IOPS of device (both from specification and from fio --bs=4k --iodepth=64 benchmark). I've tested nvme…
ndd
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