lagging/freezing in 18.3x "live"

69Rixter · 05-10-2018, 08:32 PM

Evening:

I'm running 18.3x "live" and have an undue amount of lagging. As I expect some slowness when "live", this amount of lagging is unacceptable. Ran around the web a bit and this site caught my attention: https://www.howtoforge.com/tutorial/linux-swappiness/ I've not tried it for I'm not certain about it. CAN you reset swappiness in "live" and is this set of commands proper for LM 18.3? HEY, anyone familiar with running Linux distros live that could lend some advice?
TNX:
Rick

syg00 · 05-10-2018, 08:47 PM

Of course you can - just the /proc "file" though. I doubt very much it will help; that article is about 20% correct. From a terminal runs this and post the output.

Code:

free -m

69Rixter · 05-10-2018, 08:53 PM

RE: sygOO

free -m
total used free shared buff/cache available
Mem: 7866 1539 4276 143 2051 5854
Swap: 0 0

Ahm....correct me if I'm wrong but,shouldn't there be some "swap"? And if so, then have I found the lagging problem?

syg00 · 05-10-2018, 09:19 PM

No.
With 8G of RAM and not much happening, swap wouldn't get used even if you did have some. Your issue lies elsewhere - my bet would be drivers. Run this (give it 10 seconds or so) and post using [code] tags.

Code:

top  -b -n 2 | grep -E "^top" -A15

69Rixter · 05-10-2018, 09:34 PM

RE: sygOO

I apologize; couldn't find Code: indicator (box)

top -b -n 2 | grep -E "^top" -A15
top - 22:27:58 up 2:51, 1 user, load average: 4.71, 4.98, 5.30
Tasks: 198 total, 1 running, 197 sleeping, 0 stopped, 0 zombie
%Cpu(s): 4.0 us, 0.8 sy, 0.0 ni, 73.1 id, 22.0 wa, 0.0 hi, 0.1 si, 0.0 st
KiB Mem : 8055388 total, 3462796 free, 1772512 used, 2820080 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 5760480 avail Mem

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4279 mint 20 0 2526104 547776 165812 S 37.5 6.8 5:10.26 Web Content
2866 mint 20 0 2676128 535700 172224 S 6.2 6.7 7:19.44 firefox
24852 mint 20 0 41800 3800 3208 R 6.2 0.0 0:00.02 top
1 root 20 0 185652 6336 4052 S 0.0 0.1 0:04.46 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
4 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:+
6 root 20 0 0 0 0 S 0.0 0.0 0:00.13 ksoftirqd/0
7 root 20 0 0 0 0 S 0.0 0.0 0:05.45 rcu_sched
8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
--
top - 22:28:01 up 2:51, 1 user, load average: 4.71, 4.98, 5.30
Tasks: 198 total, 1 running, 197 sleeping, 0 stopped, 0 zombie
%Cpu(s): 10.8 us, 1.3 sy, 0.0 ni, 40.1 id, 47.7 wa, 0.0 hi, 0.1 si, 0.0 st
KiB Mem : 8055388 total, 3466952 free, 1768220 used, 2820216 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 5764772 avail Mem

syg00 · 05-10-2018, 11:07 PM

The "#" button in the "Go Advanced" button below for [code] tags.

Looks like something is doing an awful lot of I/O. Run this - but wait until the prompt returns before grabbing the output.

Code:

top -b -n 1 | awk '{if (NR <=7) print; else if ($8 ~ /[RD]/) {print; count++} } END {print "Total: "count}'

69Rixter · 05-11-2018, 11:26 AM

Afternoon: sygOO

Code:

 top -b -n 1 | awk '{if (NR <=7) print; else if ($8 ~ /[RD]/) {print; count++} } END {print "Total: "count}'
top - 12:23:36 up 13 min,  1 user,  load average: 1.82, 3.24, 1.99
Tasks: 187 total,   1 running, 186 sleeping,   0 stopped,   0 zombie
%Cpu(s):  1.3 us,  0.6 sy,  0.0 ni, 59.4 id, 38.7 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  8079568 total,  5956356 free,   580996 used,  1542216 buff/cache
KiB Swap:        0 total,        0 free,        0 used.  7091608 avail Mem 

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
 3511 mint      20   0   41824   3740   3164 R   6.2  0.0   0:00.01 top
  332 root      20   0       0      0      0 D   0.0  0.0   0:00.45 usb-storage
Total: 2

Appreciate your time and expertise!!!

syg00 · 05-12-2018, 01:49 AM

Can't spot anything obvious - you're not using USB 1 slot by any chance ?.
Which desktop ?. On older kit I prefer Mate, but that shouldn't be driving I/O.

69Rixter · 05-12-2018, 01:01 PM

RE: sygOO

"you're not using USB 1 slot by any chance ?." I'm guessing you mean the designation of 1.-2.-3.0 as in USB port speed? If so, the drive is in the 3.0(blue) port. Desktop: LM18.3Xfce(live) Hmm... well..... is there anywhere else that I could post this issue that may be able to help? Thanx for your time and effort, syg00!!

ondoho · 05-13-2018, 01:15 AM

sometimes usb 3.0 does not work as expected on Linux.
i don't know how to check, however.
i'm sure you can come up with some meaningful search terms and report your findings.

also afaics, both the port AND the stick have to be 3.0, for it to have 3.0 speeds.

69Rixter · 03-16-2019, 02:32 PM

RE: ondoho

"sometimes usb 3.0 does not work as expected on Linux." Could you explain? Thank You...yes, I'm aware of 3.0 needing to be in 3.0 USB port to run @ 3.0 speed....that a 2.0 in a 3.0 USB port will only run @ 2.0 speed.

TNX