# Kernel starts up very slowly on Linux

V 12.1.1, starting a kernel, e.g. by entering wolframscript in the shell, takes an unexpectedly long time (~5 min, the time elapsed between pressing Enter and the showing-up of In[1] := ); but the same operation for V 12.0 takes merely ~3 sec.

I wonder if I am the only one experiencing this.

Update

Also, inspired by @Ordinaryusers68 's answer, I find these two posts:

where, an option -nopaclet is mentioned when starting the kernel.

• Thanks so much for bringing this up! I have similar problems since Mma 12.0, but I was to lazy to debug them properly. BTW, in my case this happens even when the system has a proper internet connection. For me PacletManager\$AllowInternet = False' works best. I guess I'll put this into my init.m and update the paclets from time to time by hand. – vsht Jul 20 at 18:55
• Hi, @vsht , thx for your information. Actually, I had hesitated for a quite long time before I decided to put this post up. And I am really happy if it can help anyone. :) – Αλέξανδρος Ζεγγ Jul 21 at 2:01

• @ΑλέξανδροςΖεγγ By using the Everything tool to search for the PacletSiteData keyword, I found that its location is C:\Users\xxx\AppData\Roaming\Mathematica\Paclets\Configuration\pacletSiteData_12.pmd2. – A little mouse on the pampas Jul 18 at 7:10