top-like tools on Linux for network
How to display the network usage by processes like top for CPU/mem on Linux?
The nethogs tool is my favorite:
nethogs – Net top tool grouping bandwidth per process
How to display the network usage by processes like top for CPU/mem on Linux?
The nethogs tool is my favorite:
nethogs – Net top tool grouping bandwidth per process
In a Linux system, we may have multiple kernels installed. Usually, it is the latest kernel configured to be the default one the system boot loader will use during automatic boot if there is no manual kernel choosing. In many cases, such as there is no driver ready yet for some devices in newer kernels,…
In Python, how to get the epoch time (the number of seconds since epoch)? In Python, you can get the epoch time by calling time.time() which return a floating number: import time print time.time() If you would like to get only the number of seconds, you may convert it to an integer. One example is…
Most time, we need to tune system parameters to achieve better performance but what the general parameters to be tuned in Linux systems. I think you may want to add following parameters to Kernel boot (/etc/default/grub) parameters intel_idle.max_cstate=0 processor.max_cstate=0 idle=poll intel_pstate=disable At the same time, you may also want to shutdown/open Pause Loop Exiting (PLE)….
We may drop the file system caches on Linux to free up memory for applications. Kernels 2.6.16 and newer provide a mechanism via the /proc/ to make the kernel drop the page cache and/or inode and dentry caches on command. We can use this mechanism to free up the memory. However, this is a non-destructive…
When debugging and optimizing programs, developers sometimes need to generate and investigate into the assembly generated by the compiler. Generating a mixed source and assembly list will help a lot for debugging and optimization. gcc can achieve this by working with the assembler. Generate assembly list mixed with the source code Just add these gcc…
HTTP 301 Redirect is an SEO friendly way to redirect readers to a page’s new location. There are a lot of benefits of using HTTP 301 Redirect. These benefits can be found in the htaccess method post. htaccess or PHP can be both used for sending 301 redirects. The htaccess method can be found in…