Questions tagged [measurement]
The measurement tag has no usage guidance.
30
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Measuring 'total bytes written' under Linux
We're quite interested in exploring the possibility of using SSD drives in a server environment. However, one thing that we need to establish is expected drive longevity. According to this article ...
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10
answers
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Linux: How to measure daily/montly network traffic?
I need to keep statistics of daily network traffic for a linux machine (CentOS 5).
Is there a way to do it using standard/native tools or utilities?
Or do I have to dowload special software for that?
...
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1
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1
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Is there a better way to analyze Varnish hit rate
I currently analyze varnish hit rate like this
While this is good, a major part of the request the server services is non-cacheable. This brings down the hit rate drastically.
How can I modify this ...
CommunityBot
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What tools do you use to measure your MTTR as the Ops Team?
and do you measure it at all?
My problem is that when outage is alerted, it feels waste of time to create a JIRA ticket first, so I start solving it right away. Besides, some outages are solved by ...
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disk I/O latency spikes (contains log files from amplify)
Ubuntu 18.04 LTS server, disk is ssd. Application stack is: mongodb, node, nignx and some python.
Server is up 1 month and already had 3 OS disk fails where Ubuntu would go in read only mode. After ...
4
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2
answers
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What units are the I/O measures in GNU "time" in?
GNU time has optional display of I/O measurements:
TIME="%I:%O" /usr/bin/time cp filea fileb
0:5488
but what units is it measuring? Any ideas? The manual only says
%I Number of filesystem ...
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1
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What are the split latency measurements produced by httping?
I've been using httping to monitor the performance of my load balancer.
The httping utility accepts a -S argument which is briefly described in the man page:
-S Split measured latency in time ...
- 395
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votes
2
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733
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Measure TLB Size [closed]
Is there a tool that will measure the size of my TLB for me? Or some sort of scripting approach I can take to estimate it?
- 1,159
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2
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Measuring external hdd's rough handling
An external USB hard drive periodically travels to and from my facility to update its files (it's for offsite backup). HDD, not SSD. How can I measure if it's being handled too roughly? I'd rather ...
-1
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1
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Measure traffic of streaming audio/video in whole office
I would like to measure the different traffic used in our office, specifically streaming of audio and video.
I'm trying to assess whether there is any affect of people using streaming on our internet ...
- 50.6k
1
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1
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Iperf bidirectional bandwidth measurement
Server side:
# iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 85.3 KByte (default)
-------------------------------------------...
CommunityBot
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2
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542
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Measuring disk usage
What is the fairest unit to determine the disk usage (except the total storage usage e.g. in GB)?
IOPS?
Bytes read / write?
Bytes transferred over network (would be equal to Bytes r/w)?
Other?
And ...
- 8,881
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1
answer
66
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Does not measuring performance improve performance?
Running the Task Manager or Resource Monitor or even simply viewing the status of a network connection indicates the system is constantly tabulating a large number of performance metrics. It must ...
- 80.4k
4
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1
answer
2k
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Measuring Disk IO programmatically
I want to measure some numbers related to disk io in a given timespan, programmatically. This means I don't want to spawn a process like iostat to get my numbers, by prefer to read something from proc ...
- 6,442
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3
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46
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Measuring Program execution time
I would like to call a program from a script, (malwarebytes, chkdsk, A/V scan) and have the script keep track of how long the program ran. Could someone point me in the direction of what I should be ...
CommunityBot
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1
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345
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Ping measurements during throughput measurements
I have been measuring the throughput of file transfers from remote hosts and analysing the results, I understand about payload to overhead ratios, retransmission and other causational factors of ...
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2
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2k
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disk bytes/s read and write
I'm trying to figure out how to count read and written bytes per second.
At the moment what I'm doing is I read the data from /proc/diskstats which looks like this:
202 0 xvda 80702313 1132334 ...
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1
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How to measure how much bandwidth a ssh connection is using per day?
I have an ssh connection that I run to access a remote machine.
At present I use autossh to keep the pipe open 24/7.
I am curious as to how much the pipe alone uses bandwidth wise.
How can I measure ...
- 31k
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votes
1
answer
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iperf-like bidirectional bandwidth measurement through NAT
I am using iperf to measure my uplink speed between my home PC behind NAT and a fully accessible root server. It does so using a TCP connection. For whatever reason it seems that iperf can only ...
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4
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What tools should I use to assess bandwidth for web server farm..?
I'm contemplating moving datacentre and I need to know the size of pipe I'll need in order to get a quote.
Currently I'm charged on GBs of traffic per month (currently about 42GB inbound - so ...
CommunityBot
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2
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How do ISPs calculate bandwidth? [closed]
I mean, is 100 GB per month 100 * 1000^3 bytes or 100 * 1024^3 bytes? Wondering if they use the decimal definition like HDD manufacturers or the binary definition. I do know that there's technically ...
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3
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Measure ip/port traffic [closed]
We have a small data center here in Brazil to host our servers.
Now we are planing to provide some colocation and VPC hosting, and we need to measure monthly traffic of each ip/port.
We can't to ...
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2
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2
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Measuring network throughput with netcat vs. CIFS/SMB transfer rates
I have been attempting to measure and benchmark our LAN's throughput as part of a larger project. Our LAN is constructed using cat5e and HP ProCurve 1800-24G switches which support 10/100/1000 Mbps ...
CommunityBot
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SAS vs SATA vs SSD: How to measure performance difference between SATA and SAS?
SAS drives can address multiple IO operations from a single platter revolution if the data happens to be where the head is already positioned. How can you measure whether this actually makes a ...
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SQL Server - measuring volumes of traffic and data
We have developed a solution based around SQL Server 2008 and Reporting Services.
Now that we're deploying it and we're looking to put it in to customer SQL Server Clusters, they're of course asking ...
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110
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how can I figure out how much a server will "take" until it goes unresponsive
I have a problem that probably MANY people have, and it's servers that are going "unresponsive" over the time
The problem:
HOW can I figure it out how much a server can handle, I never did studies on ...
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3
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What program in Linux can measure I/O over time?
I'm trying to measure the total amount of disk writing and reading that is done to a particular volume by a particular process over a specified duration.
I've found iotop, which can output IO every ...
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4
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How to measure dns queries per second
If you're not running your own dns server (or if you must run your own to do this assume you are) how would you measure how many DNS queries per second you get for your domain?
Is there anyway to tell ...
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6
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How to measure boot time?
I was wondering what is the "proper" or "most significant" way in which to measure the boot time of a client machine:
From turn on to login prompt
From turn on to login prompt (HDD light off)
From ...
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votes
2
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Timing of programs in Windows
Is there a Windows equivalent of the time Unix command?
time measures the time spent by a process in both user and kernel lands.
$ time for i in `seq 100`; do echo -n HI; done
...
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