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I have freshly installed Ubuntu 16.04 and I can say I am an experienced noob. I had previously another machine with the same specs as this one:

New PC

When I started using RStudio, especially visualizing a large dataframe, it was way much faster on the old system than the new one that I am using right now. I mean by that to navigate, sort columns and move here and there, would load a lot faster. So, I was wondering if it is something related to the swap partitioning size.

~$sudo swapon --show
NAME      TYPE        SIZE USED PRIO
/dev/sdb5 partition 186,6G   0B   -1

And

~$ free -h
              total        used        free      shared  buff/cache   available
Mem:            23G        3,1G        302M        103M         20G         19G
Swap:          186G          0B        186G

And

~$ top

top - 10:15:36 up 18:04,  1 user,  load average: 0,08, 0,19, 0,26
Tasks: 283 total,   2 running, 281 sleeping,   0 stopped,   0 zombie
%Cpu(s): 12,7 us,  0,3 sy,  0,0 ni, 87,0 id,  0,0 wa,  0,0 hi,  0,0 si,  0,0 st
KiB Mem : 24591860 total,   277684 free,  3286392 used, 21027784 buff/cache
KiB Swap: 19570073+total, 19570073+free,        0 used. 20742232 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND                                                     
20543 badredda  20   0 3271272 680964 102080 R 102,6  2,8   3:56.38 rstudio

I know that swap is used as a last resort and can render the PC dead-slow so maybe this could be the reason. I have also been reading this source mentioning that I should have a maximum of 48 GB swap space. Maybe mine is too much ?

Thanks for your help in advance.

user324810
  • 101

0 Answers0