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Thread: System Slow, Noticed not using all RAM - typical?

  1. #1

    Default System Slow, Noticed not using all RAM - typical?

    New Install OF tumbleweed.

    System is slow- I have a ssd on order, will install it when it comes in
    However, I am noticing I have 16GB ram, system is using 3.7. under heavy usage or none, never goes above but may drop to 3.6 GiB

    Watching Ksysguard, I see memory 3.7 GiB of 15.6 Gib

    Code:
    Kilbert@localhost:~> uname -r
    4.15.1-1-default
    Kilbert@localhost:~> cat /proc/meminfo 
    MemTotal:       16396532 kB
    MemFree:         7848976 kB
    MemAvailable:   12163328 kB                                                                                                                                                                                                                                                                      
    Buffers:           23660 kB                                                                                                                                                                                                                                                                      
    Cached:          2548528 kB                                                                                                                                                                                                                                                                      
    SwapCached:            0 kB                                                                                                                                                                                                                                                                      
    Active:          4498876 kB                                                                                                                                                                                                                                                                      
    Inactive:        1667876 kB                                                                                                                                                                                                                                                                      
    Active(anon):    2929136 kB                                                                                                                                                                                                                                                                      
    Inactive(anon):   665024 kB                                                                                                                                                                                                                                                                      
    Active(file):    1569740 kB                                                                                                                                                                                                                                                                      
    Inactive(file):  1002852 kB                                                                                                                                                                                                                                                                      
    Unevictable:          80 kB                                                                                                                                                                                                                                                                      
    Mlocked:              80 kB                                                                                                                                                                                                                                                                      
    SwapTotal:       2104316 kB                                                                                                                                                                                                                                                                      
    SwapFree:        2104316 kB                                                                                                                                                                                                                                                                      
    Dirty:             71708 kB                                                                                                                                                                                                                                                                      
    Writeback:             0 kB                                                                                                                                                                                                                                                                      
    AnonPages:       3351688 kB                                                                                                                                                                                                                                                                      
    Mapped:           315080 kB                                                                                                                                                                                                                                                                      
    Shmem:            154112 kB                                                                                                                                                                                                                                                                      
    Slab:            2221904 kB                                                                                                                                                                                                                                                                      
    SReclaimable:    2079992 kB                                                                                                                                                                                                                                                                      
    SUnreclaim:       141912 kB                                                                                                                                                                                                                                                                      
    KernelStack:       13376 kB                                                                                                                                                                                                                                                                      
    PageTables:        51552 kB                                                                                                                                                                                                                                                                      
    NFS_Unstable:          0 kB                                                                                                                                                                                                                                                                      
    Bounce:                0 kB                                                                                                                                                                                                                                                                      
    WritebackTmp:          0 kB                                                                                                                                                                                                                                                                      
    CommitLimit:    10302580 kB                                                                                                                                                                                                                                                                      
    Committed_AS:    8017940 kB                                                                                                                                                                                                                                                                      
    VmallocTotal:   34359738367 kB                                                                                                                                                                                                                                                                   
    VmallocUsed:           0 kB                                                                                                                                                                                                                                                                      
    VmallocChunk:          0 kB                                                                                                                                                                                                                                                                      
    HardwareCorrupted:     0 kB                                                                                                                                                                                                                                                                      
    AnonHugePages:    890880 kB                                                                                                                                                                                                                                                                      
    ShmemHugePages:        0 kB                                                                                                                                                                                                                                                                      
    ShmemPmdMapped:        0 kB                                                                                                                                                                                                                                                                      
    HugePages_Total:       0                                                                                                                                                                                                                                                                         
    HugePages_Free:        0                                                                                                                                                                                                                                                                         
    HugePages_Rsvd:        0                                                                                                                                                                                                                                                                         
    HugePages_Surp:        0                                                                                                                                                                                                                                                                         
    Hugepagesize:       2048 kB                                                                                                                                                                                                                                                                      
    DirectMap4k:      666384 kB                                                                                                                                                                                                                                                                      
    DirectMap2M:    15034368 kB                                                                                                                                                                                                                                                                      
    DirectMap1G:     3145728 kB
    
    TOP:
     2080 Kilbert   20   0 3265992 470812 124052 R 79.87 2.871  45:38.89 firefox                                                                                                                                                                                                                     
     1631 Kilbert   20   0  890372 128816  32528 S 13.86 0.786   8:01.91 Plex Media Serv                                                                                                                                                                                                             
     8078 Kilbert   20   0  403264  87152  37692 S 12.87 0.532  14:17.51 Plex Media Scan                                                                                                                                                                                                             
    23638 Kilbert   20   0  963620 104700   8860 S 5.941 0.639   2:10.36 Plex Script Hos                                                                                                                                                                                                             
     1980 Kilbert   20   0 3361148 100364  61956 S 4.950 0.612   4:31.83 kwin_x11                                                                                                                                                                                                                    
     2580 Kilbert   35  15 1869108 202628   9008 S 4.620 1.236   3:38.98 Plex Script Hos

    Is this normal? Shouldn't my ram be pushed, instead of the slowdown I am seeing?

  2. #2
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    Default Re: System Slow, Noticed not using all RAM - typical?

    Try the 'free' command for memory; although, I don't think memory is your problem.

    The SSD will help with loading programs, and reading / writing files,
    but probably won't help with what you are experiencing.

    Your top output shows firefox is heavily active.
    Combined with the Plex software it's over 100%

    https://unix.stackexchange.com/quest...ng-top-command
    https://unix.stackexchange.com/quest...-cpu-usage-100

    What is your CPU and GPU?

  3. #3

    Default Re: System Slow, Noticed not using all RAM - typical?

    Thanks
    her is the info:

    Code:
    Kilbert@localhost:~> free
                  total        used        free      shared  buff/cache   available
    Mem:       16396532     4857416      153144      119988    11385972    11284520
    Swap:       2104316           0     2104316
    cpu:
    Code:
    Kilbert@localhost:~> lscpu
    Architecture:        x86_64
    CPU op-mode(s):      32-bit, 64-bit
    Byte Order:          Little Endian
    CPU(s):              8
    On-line CPU(s) list: 0-7
    Thread(s) per core:  2
    Core(s) per socket:  4
    Socket(s):           1
    NUMA node(s):        1
    Vendor ID:           AuthenticAMD
    CPU family:          21
    Model:               2
    Model name:          AMD FX(tm)-8350 Eight-Core Processor
    Stepping:            0
    CPU MHz:             3096.717
    CPU max MHz:         4000.0000
    CPU min MHz:         1400.0000
    BogoMIPS:            7982.68
    Virtualization:      AMD-V
    L1d cache:           16K
    L1i cache:           64K
    L2 cache:            2048K
    L3 cache:            8192K
    NUMA node0 CPU(s):   0-7
    Flags:               fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb cpb hw_pstate retpoline retpoline_amd rsb_ctxsw vmmcall bmi1 arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold
    Kilbert@localhost:~>


    gpu is an old 9800gt , I have a newer rx250 2 or 4 gb but previously had issues with it, so I yanked it and put this in.

  4. #4
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    Default Re: System Slow, Noticed not using all RAM - typical?

    Also, perhaps examine your cpu utilization (eg with 'top') when these slow downs are being experienced.

  5. #5
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    Default Re: System Slow, Noticed not using all RAM - typical?

    Your top output shows firefox is heavily active.
    Combined with the Plex software it's over 100%

    https://unix.stackexchange.com/quest...ng-top-command
    https://unix.stackexchange.com/quest...-cpu-usage-100

    What is your CPU and GPU?
    Oops, missed this. Yes, this needs investigating further.

  6. #6

    Default Re: System Slow, Noticed not using all RAM - typical?

    Quote Originally Posted by deano_ferrari View Post
    Oops, missed this. Yes, this needs investigating further.
    amd fx8350 & r800 gt video card. I have a r7 250 4 gb (in the desk drawer) but last install had issues with it, eg. may kernel errors on boot.

  7. #7
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    Default Re: System Slow, Noticed not using all RAM - typical?

    Look at 'top' again.
    Is firefox still using a lot of CPU?
    When I switched to terminal to look right now,
    firefox was %2.0 then %0.33,
    compared with your %79.87.

    What version of firefox is it?
    Is it the openSUSE package?

  8. #8

    Default Re: System Slow, Noticed not using all RAM - typical?

    >look at 'top' again.

    >Is firefox still using a lot of CPU? no its plasma shell but firefox keeps bumping up to the top 3

    while I was typing this out, my menubar disappeared (with the start button) & no right click menu for a solid 30 seconds, then it came back... SYstem, is super slugginsh.
    still does not use much ram, right now ksysguard shows at idle its at 3.1 of 15.6. & CPU shoows 3 cpu pegged @ 100% and 2 of the others at 2-100% bouncing. & 3 at 40-100% bouncing.

    >When I switched to terminal to look right now,
    >firefox was %2.0 then %0.33,
    >compared with your %79.87.

    >What version of firefox is it?
    58.0.1
    >Is it the openSUSE package?yes,
    default from new tumbleweed install packman & restricted extras added from multimenia pinned post.



    Code:
     
    1861 Kilbert   20   0 6418944 226492  51556 R 125.6 1.381 178:28.39 plasmashell                                                                                                                                                                                                                 
     1673 root      20   0  424168  72976  48928 S 54.82 0.445  93:43.13 X                                                                                                                                                                                                                           
    29318 Kilbert   20   0  282424  20232  16496 S 17.94 0.123   0:20.99 file.so                                                                                                                                                                                                                     
      450 root      20   0       0      0      0 D 16.28 0.000  55:32.20 btrfs-cleaner                                                                                                                                                                                                               
    29317 Kilbert   20   0  282256  19996  16496 D 11.63 0.122   0:17.71 file.so                                                                                                                                                                                                                     
     1853 Kilbert   20   0 3377440  55284  18940 S 4.319 0.337  19:50.43 kwin_x11                                                                                                                                                                                                                    
    29407 Kilbert   20   0  828180  89836  74392 S 4.319 0.548   0:01.90 konsole                                                                                                                                                                                                                     
    28308 root      20   0       0      0      0 D 3.322 0.000   0:00.98 kworker/u16:3                                                                                                                                                                                                               
       78 root      20   0       0      0      0 S 2.990 0.000   6:42.95 kswapd0                                                                                                                                                                                                                     
     2267 Kilbert   20   0  301188  11876   5116 R 0.664 0.072   1:07.14 kuiserver                                                                                                                                                                                                                   
    28406 root      20   0       0      0      0 I 0.664 0.000   0:00.25 kworker/u16:9                                                                                                                                                                                                               
        8 root      20   0       0      0      0 I 0.332 0.000   1:10.97 rcu_preempt                                                                                                                                                                                                                 
      181 root       0 -20       0      0      0 I 0.332 0.000   0:33.13 kworker/1:1H                                                                                                                                                                                                                
     1746 Kilbert   20   0   42504   3348   1996 S 0.332 0.020   0:55.45 dbus-daemon                                                                                                                                                                                                                 
    28855 Kilbert   20   0 1182508 115332  84560 S 0.332 0.703   0:14.94 dolphin                                                                                                                                                                                                                     
    28859 root      20   0       0      0      0 I 0.332 0.000   0:00.36 kworker/1:2                                                                                                                                                                                                                 
    .
    .
    1948 Kilbert   20   0 3380984 418216 106408 S 0.662 2.551 151:46.22 firefox

  9. #9
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    Default Re: System Slow, Noticed not using all RAM - typical?

    Try creating a new user, and then login to the desktop as that user. Check the plasmashell CPU loading again. Any different? If you search there seems to be a number of similar threads around with similar symptoms. A common theme seems to be that killing and restating plasmashell seems to help (temporarily at least) with settling CPU utilization down. I'm not sure what's behind it though.

    https://forums.opensuse.org/showthre...20170618/page3

  10. #10
    Join Date
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    Default Re: System Slow, Noticed not using all RAM - typical?

    A web search for btrfs-cleaner shows various people complaining about performance.
    Check 'top' again to see if it's still running.

    Something weird is definitely going on.

    You could experiment with using a different desktop environment / window manager.
    icewm is probably already installed.

    xfce is lightweight.

    Code:
    zypper in --no-recommends -t pattern xfce

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