Why would anyone choose not to use the lowlatency kernel?
The different configurations, “generic”, “lowlatency” (as configured in Ubuntu), and RT (“real-time”), are all about balancing throughput versus latency. Generic kernels favour throughput over latency, the others favour latency over throughput. Thus users who...
How can I update all Snap packages?
sudo snap refresh Will do this. It is part of snapd 2.0.8, which landed 2016-06-13 in xenial-updates. snap refresh --list Only lists the updates without refreshing the packages. snap info <snap name> Can show which versions are available for a particular...
What does Controls.Add() do in c#? [closed]
Controls is an instance of Control.ControlCollection class, which represents a collection of Control objects, Inheritance hierarchy is System.Windows.Forms.Control.ControlCollection Note: The Add, Remove, and RemoveAt methods enable you to add and remove...
Write an SQL query to find all those hostnames that have encountered multiple logs //“init failure” on any given day at 5 min interval
In SQL, you can use lag()/lead() to find such "adjacent" rows. Date functions are notoriously database dependent, but the idea is: select t.* from (select t.*, lead(time, 4) over (partition by hostname, date order by time) as time_4 from t where log = 'init...
How can I change the date modified/created of a file?
As long as you are the owner of the file (or root), you can change the modification time of a file using the touch command: touch filename By default this will set the file's modification time to the current time, but there are a number of flags, such as the -d...
How to read dmesg from previous session? (dmesg.0)
Although a bit late for the OP... I use Fedora, but if your system uses journalctl then you can easily get the kernel messages (dmesg log) from prior shutdown/crash (in a dmesg -T format) through the following. Options: -k (dmesg) -b < boot_number > (How...
Get data on daily basis in laravel
You can use the existing Laravel cron job scheduling to fulfill your specific requirement. Please refer following Laravels official documentation https://laravel.com/docs/5.8/scheduling#scheduling-queued-jobs I'll show a simple example to get an idea about this...
Get JavaScript object from array of objects by value of property [duplicate]
Filter array of objects, which property matches value, returns array: var result = jsObjects.filter(obj => { return obj.b === 6 }) See the MDN Docs on Array.prototype.filter() const jsObjects = [ {a: 1, b: 2}, {a: 3, b: 4}, {a: 5, b: 6}, {a: 7, b: 8} ] let...
Python speed testing – Time Difference – milliseconds
datetime.timedelta is just the difference between two datetimes ... so it's like a period of time, in days / seconds / microseconds >>> import datetime >>> a = datetime.datetime.now() >>> b = datetime.datetime.now() >>> c = b...
How to find the distance to the nearest coastline from Property Place latitude/longitude point?
Please try $dist = "https://maps.googleapis.com/maps/api/directions/json?key=&origin=".$lat1.",".$lon1."&destination=".$lat2.",".$lon2."&mode=driving&sensor=true"; $result_string = file_get_contents($dist); $result = json_decode($result_string,...