performance
Improving DNF Update Speeds with max_parallel_downloads
2024/10/12
How to improve download speeds during system updates by adjusting the max_parallel_downloads setting in DNF.
Bash script performance issue and remediation
2024/06/17
I was looking at writing some output to files. The output did not vary much but the number of lines was huge. It was long time back so I dont remember the context of the requirement but I needed to …
scripting – performance improvement with file open
2020/04/20
Sometimes just one line of code can make all the difference. I will show you with example. Here is script with 2 functions. Both are writing some lines of text to a file. First function, “a” I have …
glances – new way to look at contention
2018/06/04
glances is like top/htop but little different. It shows you sort based on contention (smartly and automatically) unless you change that and hence if you just want to check what is biggest bottleneck …
change the output format for time command
2016/08/16
If you are doing some scripting and using ‘time’ command, then you know sometimes it becomes difficult to capture the output as the output would be something like this: : amit ; time ls real 0m0.002s …
ionice – renice you IO activity for the process.
2015/04/13
ionice is utility provided by the package util-linux. Description of util-linux: […] […] With the help of this utility, you can set the scheduler priority for your IO scheduling upto …
perl is faster than bash in some cases.
2011/01/11
Some days back, I had to generate some data to be uploaded to a database. As usual I assumed that bash should be faster and hence wrote the script to create the files in bash. But I found that even …
Are you swapped? Increase the performance of Linux machine.
2010/07/14
With the ever increasing cost of the Hardware, the amount of physical RAM available on the system is increasing day by day. For example, couple of years back, I had a system which was very high end …
Visualizing system performance data
2010/06/25
<a href="http://blog.amit-agarwal.co.in/category/linux/">Bookmark this category […] $ vmstat 2 10 | awk 'NR > 2 {print NR, $13}' | gnuplot -e “set terminal png;set …