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Discussion in 'Virtual Private Server (VPS) hosting' started by eva2000, Dec 26, 2016.

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  1. Jun 8, 2017 #61
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    Update: The issue has been resolved. Stated fault; an abusive VM on the host node.

    Forgive my ignorance, but I went for KVM to eliminate the potential issues from shared VM's on the same node, as I thought they were more independent than OPenVZ. Is this not the case?

     
    Last edited: Jun 8, 2017
  2. Jun 8, 2017 #62
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    Unfortunately, both KVM and OpenVZ can get abusive neighbours just less with KVM.
     
  3. Jun 15, 2017 #63
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    OK, so this theme has been continuing all week. The disk I/O hits a peak, my websites grind to a halt, I put a call in and they come back with its an abusive member and they've suspended them.

    Screenshot_6.png Screenshot_8.png

    If we now look at it over a month, you can see how often it occurs. Its also obvious that they don't actively monitor, but manage the node on a reactive nature based on complaints. The peak is just short of 4G. You can see as the month progresses how the gaps have improved, following my complaints, but still.

    Screenshot_9.png

    So whilst they may be cheap, its not a reliable service. Add the the fact a call takes a long time to be answered, even at the highest priority (around 4 hours).

    Advice for moving forward?
     
  4. Jun 15, 2017 #64
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    shame to see this - probably expected due to the price. Great for Centmin Mod initial noobie testing I suppose. If you want reliable at least RamNode, Linode, DigitalOcean, and Vultr are usual go to.
     
  5. Jun 15, 2017 #65
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    Not sure if this is a work based firewall thing, but those links contain :444 which I have to strip out for them to function correctly.
     
  6. Jun 15, 2017 #66
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    weird.. thanks for heads up
     
  7. Jun 16, 2017 #67
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    indeed a bit slower 123.09beta01 on HostUS.us Washington OpenVZ 2GB VPS with Intel Xeon E5-1650v3 and 2 cpu cores

    Code (Text):
    ---------------------------------------------------------------------------
Total Curl Installer YUM or DNF Time: 96.8206 seconds
Total YUM Time: 10.081704877 seconds
Total YUM or DNF + Source Download Time: 31.6047
Total Nginx First Time Install Time: 209.1806
Total PHP First Time Install Time: 449.8508
Download Zip From Github Time: 1.7492
Total Time Other eg. source compiles: 284.1823
Total Centmin Mod Install Time: 974.8184
---------------------------------------------------------------------------
Total Install Time (curl yum + cm install + zip download): 1073.3882 seconds
---------------------------------------------------------------------------

    Code (Text):
    cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 63
model name      : Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz
stepping        : 2
microcode       : 54
cpu MHz         : 3500.003
cache size      : 15360 KB
physical id     : 0
siblings        : 12
core id         : 0
cpu cores       : 6
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 15
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf cpuid_faulting pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm xsaveopt cqm_llc cqm_occup_llc
bogomips        : 7000.00
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 63
model name      : Intel(R) Xeon(R) CPU E5-1650 v3 @ 3.50GHz
stepping        : 2
microcode       : 54
cpu MHz         : 3500.003
cache size      : 15360 KB
physical id     : 0
siblings        : 12
core id         : 1
cpu cores       : 6
apicid          : 2
initial apicid  : 2
fpu             : yes
fpu_exception   : yes
cpuid level     : 15
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf cpuid_faulting pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm ida arat epb pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase bmi1 avx2 smep bmi2 erms invpcid cqm xsaveopt cqm_llc cqm_occup_llc
bogomips        : 7000.00
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management:
     
  8. Jun 20, 2017 #68
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    I've been going back and forth a little putting support calls in with every slow down and providing a stats screenshot each time confirming the disk I/O from their own stats display on my customer panel.

    These are my stats for the last 24 hours. Bear in mind that every time I get a peak in the I/O, my site does not respond. These stats appear to reflect the node, rather than my specific VPS. I'm measuring similar stats for my own usage using monitorix and the figures are nowhere near these peaks. So 10 periods of downtime or very lethargic response times in 24 hours, of which I personally witnessed 6 events.

    upload_2017-6-20_23-10-35.png

    My last message to them was a little short.
    "My server runs perfectly fine and I am happy with it except for when there are high I/O disk writes as per the chart attached. These are not caused by me, but usually by someone else on the node. Whenever the chart peaks, my service suffers. As you can see it happens multiple times a day.

    I do not want a standard try it now response. I want to know exactly what the fault was and I want to know how you are going to prevent it happening again in the future. I've been pretty patient, but this sort of regular down time cannot be tolerated for much longer."

    Their reply?
    "Sorry to hear this is not working out for you. We would like to offer a refund for the unused period and cancel your service."

    So if I understand this correctly, rather than sort out the abusive neighbours on the node, they want to cancel my service because I'm complaining about it. Wow!
     
  9. Jun 21, 2017 #69
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    Guess you get what you pay for. So probably best to find a new web host.
     
  10. Jun 21, 2017 #70
    jscott

    jscott Member

    104
    14
    18
    Aug 13, 2015
    Ratings:
    +33
    Local Time:
    3:45 AM
    viralpoet,

    How did you generate the charts in your post?

    I run Apache bench every now and then and keep track of my transactions per second.
    I just got the $25 deal ( it is still available! ) this month and my transaction rate varies from 40/s to 300/s.
    I expect this to vary, but this is a bit much.

    I would like to be able to complain with some facts to back me up.

    Thanks
    -John Scott
     
  11. Jun 21, 2017 #71
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    Its in the usage graphs of your client area. HOwever based on my experience, if you dont like it they'll just cancel you.
     
  12. Jun 25, 2017 #72
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    I've been monitoring a new server and plan to move this week.
    In hostus news, this is todays I/O so the problem is obviously getting worse. 9G peak hit on this graph over the last 24 hours and lots around the 2-3G mark.

    upload_2017-6-25_20-56-41.png

    And over the last month

    upload_2017-6-25_20-59-52.png
     
  13. Jun 25, 2017 #73
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    I'm not seeing such disk i/o usage on my HostUS 2GB OpenVPS $25/yr servers, you sure it isn't your own server ? check via sysstat's sar tool and pidstat tool
    Code (Text):
    sar -u

    Code (Text):
    sar -u 1 10

    Code (Text):
    pidstat -d 1 10
     
  14. Jun 25, 2017 #74
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    Here are my monitorix stats
    upload_2017-6-25_22-2-21.png
    upload_2017-6-25_22-3-7.png

    above for the last 24 hours
    below for the last week

    upload_2017-6-25_22-6-1.png
    upload_2017-6-25_22-6-24.png
     
  15. Jun 25, 2017 #75
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    use the commands i suggested.. sometimes monitoring software has their own resource overhead when running themselves i.e glances vs top command etc
     
  16. Jun 25, 2017 #76
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    Code:
    Linux 3.10.0-514.10.2.el7.x86_64 (server)       06/25/2017      _x86_64_        (4 CPU)

12:00:02 AM     CPU     %user     %nice   %system   %iowait    %steal     %idle
12:05:01 AM     all      0.42      0.00      0.19      6.72      0.15     92.52
12:10:01 AM     all      0.40      0.00      0.18      2.55      0.18     96.68
12:15:01 AM     all      0.43      0.00      0.47      4.29      0.16     94.64
12:20:01 AM     all      0.36      0.00      0.27      5.15      0.13     94.09
12:25:01 AM     all      0.64      0.00      0.44      2.46      0.14     96.31
12:30:01 AM     all      0.77      0.00      0.17     11.59      0.15     87.32
12:35:01 AM     all      0.39      0.00      0.17      1.96      0.14     97.34
12:40:01 AM     all      0.35      0.00      0.17      2.47      0.18     96.82
12:45:01 AM     all      0.39      0.00      0.25      3.90      0.14     95.32
12:50:01 AM     all      0.43      0.00      0.55      3.25      0.10     95.67
12:55:01 AM     all      0.45      0.00      0.17      3.07      0.17     96.14
01:00:01 AM     all      0.41      0.00      0.21      7.58      0.19     91.63
01:05:01 AM     all      0.57      0.00      0.20      4.50      0.18     94.56
01:10:01 AM     all      0.43      0.00      0.18      4.45      0.16     94.79
01:15:01 AM     all      0.46      0.00      0.27      2.54      0.14     96.60
01:20:01 AM     all      0.39      0.00      0.18      3.21      0.23     96.00
01:25:01 AM     all      0.33      0.00      0.18      2.14      0.11     97.25
01:30:01 AM     all      0.35      0.00      0.17      6.96      0.14     92.38
01:35:01 AM     all      0.37      0.00      0.18      2.22      0.18     97.06
01:40:01 AM     all      0.25      0.00      0.17      1.67      0.16     97.75
01:45:01 AM     all      0.38      0.00      0.22      3.50      0.17     95.72
01:50:01 AM     all      0.31      0.00      0.16      1.80      0.14     97.59
01:55:01 AM     all      1.42      0.00      0.19      6.12      0.19     92.08
02:00:01 AM     all      0.33      0.00      0.17      5.10      0.15     94.25
02:05:01 AM     all      0.29      0.00      0.30      2.55      0.13     96.74
02:10:01 AM     all      0.27      0.00      0.27      2.61      0.10     96.74
02:15:01 AM     all      0.37      0.00      0.17      3.60      0.09     95.77
02:20:01 AM     all      0.27      0.00      0.15      2.33      0.14     97.11
02:25:01 AM     all      0.75      0.00      1.90      2.27      0.16     94.92
02:30:01 AM     all      0.42      0.00      0.32      7.12      0.14     92.00
02:35:01 AM     all      0.48      0.00      0.18      2.55      0.21     96.59
02:40:01 AM     all      0.34      0.00      0.27      2.45      0.17     96.76
02:45:01 AM     all      0.92      0.00      0.18      4.73      0.17     94.00
02:50:01 AM     all      0.24      0.00      0.17      2.68      0.16     96.75
02:55:01 AM     all      0.70      0.00      0.18      5.11      0.14     93.86
03:00:01 AM     all      0.27      0.00      0.17      3.76      0.13     95.67
03:05:01 AM     all      0.89      0.00      1.82     11.22      0.21     85.85
03:10:01 AM     all      0.28      0.00      0.17      7.93      0.24     91.39
03:15:01 AM     all      0.40      0.00      0.27      3.04      0.14     96.16
03:20:01 AM     all      0.32      0.00      0.17      2.43      0.10     96.97
03:25:01 AM     all      0.31      0.00      0.19      4.34      0.10     95.06
03:30:01 AM     all      0.52      0.00      0.18     11.52      0.21     87.58
03:35:01 AM     all      0.50      0.02      0.40      3.51      0.18     95.38
03:40:01 AM     all      0.98      0.00      0.17      3.93      0.13     94.79
03:45:01 AM     all      0.65      0.00      0.85      2.73      0.18     95.58
03:50:01 AM     all      0.37      0.00      0.18      3.62      0.12     95.71
03:55:01 AM     all      0.34      0.00      0.23      1.90      0.21     97.33
04:00:01 AM     all      0.35      0.00      0.19      3.59      0.12     95.76

04:00:01 AM     CPU     %user     %nice   %system   %iowait    %steal     %idle
04:05:01 AM     all      0.81      0.00      0.22      3.73      0.15     95.10
04:10:01 AM     all      0.30      0.00      0.16      1.87      0.18     97.49
04:15:01 AM     all      0.25      0.00      0.14      1.88      0.29     97.44
04:20:01 AM     all      0.25      0.00      0.18      5.93      0.36     93.28
04:25:01 AM     all      0.28      0.00      0.16      2.89      0.23     96.45
04:30:01 AM     all      0.27      0.00      0.15      4.56      0.26     94.77
04:35:01 AM     all      0.57      0.00      0.19      5.07      0.22     93.95
04:40:01 AM     all      0.34      0.00      0.52      2.49      0.15     96.49
04:45:01 AM     all      0.45      0.00      0.37      2.07      0.15     96.96
04:50:02 AM     all      0.39      0.00      0.58      5.83      0.18     93.02
04:55:01 AM     all      0.45      0.00      0.19      2.70      0.23     96.42
05:00:01 AM     all      0.70      0.00      0.60      6.06      0.18     92.46
05:05:01 AM     all      0.41      0.00      0.61      7.04      0.12     91.82
05:10:01 AM     all      0.24      0.00      0.16      1.07      0.11     98.43
05:15:01 AM     all      1.09      0.00      0.17      3.93      0.15     94.66
05:20:01 AM     all      0.33      0.00      0.16      1.62      0.12     97.77
05:25:01 AM     all      0.41      0.00      0.37      4.39      0.21     94.62
05:30:01 AM     all      0.60      0.00      1.30      5.78      0.17     92.15
05:35:01 AM     all      0.37      0.00      0.37      9.07      0.21     89.97
05:40:01 AM     all      0.41      0.00      0.21      3.73      0.13     95.53
05:45:01 AM     all      0.70      0.00      0.34      8.25      0.26     90.44
05:50:01 AM     all      0.36      0.00      0.17      9.98      0.19     89.30
05:55:01 AM     all      0.42      0.00      0.73      4.25      0.11     94.48
06:00:01 AM     all      0.29      0.00      0.15      3.07      0.17     96.32
06:05:01 AM     all      1.19      0.00      0.18      4.24      0.19     94.21
06:10:01 AM     all      0.49      0.00      0.18      3.51      0.13     95.70
06:15:02 AM     all      1.61      0.00      0.20      5.23      0.22     92.75
06:20:01 AM     all      1.42      0.00      0.21      5.73      0.25     92.39
06:25:01 AM     all      1.39      0.00      0.26      6.48      0.21     91.65
06:30:01 AM     all      0.83      0.00      0.22     12.03      0.27     86.65
06:35:01 AM     all      0.53      0.00      0.25      5.68      0.18     93.36
06:40:01 AM     all      0.52      0.00      0.20      4.96      0.20     94.13
06:45:01 AM     all      0.40      0.00      0.19      3.59      0.14     95.67
06:50:01 AM     all      0.46      0.00      0.38      6.67      0.21     92.27
06:55:01 AM     all      0.51      0.00      0.36      4.63      0.18     94.32
07:00:01 AM     all      0.82      0.00      0.21      6.61      0.33     92.04
07:05:01 AM     all      0.49      0.00      0.17      3.82      0.15     95.36
07:10:01 AM     all      0.38      0.00      0.17      2.63      0.19     96.62
07:15:01 AM     all      0.32      0.00      0.17      3.38      0.18     95.95
07:20:01 AM     all      0.25      0.00      0.16      3.04      0.25     96.30
07:25:01 AM     all      0.44      0.00      0.18      4.19      0.21     94.98
07:30:01 AM     all      0.32      0.00      0.16      8.93      0.18     90.41
07:35:01 AM     all      0.43      0.00      0.17      1.50      0.17     97.73
07:40:01 AM     all      0.41      0.00      0.25      4.96      0.19     94.19
07:45:01 AM     all      0.31      0.00      0.16      6.30      0.22     93.00
07:50:01 AM     all      0.31      0.00      0.14      4.87      0.23     94.46
07:55:01 AM     all      0.82      0.00      1.65      6.00      0.25     91.28
08:00:01 AM     all      0.33      0.00      0.15      3.28      0.23     96.01

08:00:01 AM     CPU     %user     %nice   %system   %iowait    %steal     %idle
08:05:01 AM     all      0.40      0.00      0.32      3.39      0.19     95.71
08:10:01 AM     all      0.58      0.00      0.42      3.28      0.19     95.54
08:15:01 AM     all      1.15      0.00      0.63      6.80      0.21     91.22
08:20:01 AM     all      0.39      0.00      0.18      3.11      0.17     96.15
08:25:01 AM     all      0.87      0.00      1.30      3.73      0.20     93.91
08:30:01 AM     all      0.35      0.00      0.17      3.91      0.13     95.44
08:35:01 AM     all      0.46      0.00      0.29      4.90      0.19     94.16
08:40:01 AM     all      0.51      0.00      0.17      3.03      0.17     96.12
08:45:01 AM     all      0.42      0.00      0.19      3.95      0.13     95.32
08:50:01 AM     all      0.44      0.00      0.35      2.01      0.17     97.03
08:55:01 AM     all      0.56      0.00      0.18      8.57      0.20     90.49
09:00:01 AM     all      3.27      0.00      0.17      6.73      0.21     89.63
09:05:01 AM     all      1.68      0.00      0.97     13.21      0.18     83.96
09:10:01 AM     all      0.71      0.00      0.26      7.90      0.16     90.97
09:15:01 AM     all      5.77      0.00      1.38      8.81      0.21     83.83
09:20:01 AM     all      0.85      0.00      0.25      8.05      0.16     90.70
09:25:01 AM     all      0.32      0.00      0.25      6.34      0.14     92.95
09:30:01 AM     all      3.19      0.00      0.18     13.22      0.18     83.23
09:35:01 AM     all      2.94      0.00      0.27      9.02      0.24     87.54
09:40:01 AM     all      2.30      0.00      0.50      5.37      0.15     91.67
09:45:01 AM     all      1.88      0.00      0.81      5.48      0.13     91.70
09:50:01 AM     all      0.50      0.00      0.43      7.50      0.14     91.43
09:55:01 AM     all      0.73      0.00      0.89      5.31      0.15     92.91
Average:        all      0.66      0.00      0.33      4.82      0.18     94.01
[09:57][root@server ~]# pidstat -d 1 10
Linux 3.10.0-514.10.2.el7.x86_64 (server)       06/25/2017      _x86_64_        (4 CPU)

09:59:21 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command

09:59:22 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
09:59:23 AM   995      3499      0.00      4.00      0.00  mysqld

09:59:23 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command

09:59:24 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
09:59:25 AM    99     19095      0.00    792.00      0.00  monitorix.cgi

09:59:25 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
09:59:26 AM    99     19095      0.00    748.00      0.00  monitorix.cgi

09:59:26 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
09:59:27 AM     0       295      0.00    140.00      0.00  jbd2/vda3-8
09:59:27 AM    99     19095      0.00     96.00      0.00  monitorix.cgi

09:59:27 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
09:59:28 AM    99     19095      0.00    736.00      0.00  monitorix.cgi

09:59:28 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
09:59:29 AM   995      3499      0.00     12.00      0.00  mysqld
09:59:29 AM    99     19095      0.00   1228.00      0.00  monitorix.cgi

09:59:29 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
09:59:30 AM   995      3499      0.00     12.00      0.00  mysqld
09:59:30 AM    99     19095      0.00   1404.00      0.00  monitorix.cgi

09:59:30 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
09:59:31 AM     0       295      0.00     28.00      0.00  jbd2/vda3-8
09:59:31 AM   995      3499      0.00      8.00      0.00  mysqld

Average:      UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
Average:        0       295      0.00     16.80      0.00  jbd2/vda3-8
Average:      995      3499      0.00      3.60      0.00  mysqld
     

    Attached Files:

  17. Jun 25, 2017 #77
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    so yes sar reports ~4.82% disk iowait with peak of around 13% iowait for past 24hrs stats so some

    but pidstat reports monitorix.cgi itself has disk write usage up to 1404 KB/s so as I suspected monitorix itself has disk I/O overhead

    doesn't rule out your VPS node having nosiy neighbours though

    you can start 2 ssh windows one running
    Code (Text):
    pidstat -d 1 20

    and other
    Code (Text):
    sar -u 1 20

    to get a profile per timestamp
     
  18. Jun 25, 2017 #78
    viralpoet

    viralpoet Member

    43
    3
    8
    Mar 5, 2017
    Ratings:
    +9
    Local Time:
    9:45 PM
    1.10.3
    10
    its probably a good time to check it as my SSH connecting is grinding to a halt which is usually a sign the i/o is bad,

    Code:
    10:31:59 AM     CPU     %user     %nice   %system   %iowait    %steal     %idle
10:32:00 AM     all      0.00      0.00      1.00     37.00      0.25     61.75
10:32:01 AM     all      0.50      0.00      0.25     50.00      0.00     49.25
10:32:02 AM     all      1.02      0.00      1.27     48.22      0.76     48.73
10:32:03 AM     all      0.25      0.00      0.50     57.14      0.25     41.85
10:32:04 AM     all      0.50      0.00      0.00     50.37      0.00     49.13
10:32:05 AM     all      0.00      0.00      0.25     49.87      0.00     49.87
10:32:06 AM     all      1.01      0.00      2.76     44.97      0.25     51.01
10:32:07 AM     all      0.76      0.00      0.76     23.29      0.25     74.94
10:32:08 AM     all      3.25      0.00      0.81     18.97      0.00     76.96
10:32:09 AM     all      2.25      0.00      0.50     10.75      0.25     86.25
10:32:10 AM     all      0.25      0.00      0.25     26.82      0.00     72.68
10:32:11 AM     all      0.26      0.00      0.26     22.22      0.00     77.26
10:32:12 AM     all      5.75      0.00      0.50     20.50      0.25     73.00
10:32:13 AM     all      0.25      0.00      0.25      1.25      0.00     98.25
10:32:14 AM     all      4.27      0.00      0.00     11.81      0.00     83.92
10:32:15 AM     all      0.25      0.00      0.25      2.00      0.00     97.50
10:32:16 AM     all      1.25      0.00      0.25     13.78      0.00     84.71
10:32:17 AM     all      0.50      0.00      0.25     24.37      0.00     74.87
10:32:18 AM     all      3.51      0.00      0.00     20.05      0.25     76.19
10:32:19 AM     all      0.00      0.00      0.25      0.25      0.00     99.50
Average:        all      1.29      0.00      0.52     26.70      0.13     71.37
    Code:
    Linux 3.10.0-514.10.2.el7.x86_64 (server)       06/25/2017      _x86_64_        (4 CPU)

10:32:02 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:03 AM     0       295      0.00      3.96      0.00  jbd2/vda3-8
10:32:03 AM   995       648     15.84    419.80      0.00  mysqld

10:32:03 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:04 AM   995       648     16.00     32.00      0.00  mysqld

10:32:04 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command

10:32:05 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:06 AM     0       295      0.00     12.00      0.00  jbd2/vda3-8

10:32:06 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:07 AM   995       648    144.00      0.00      0.00  mysqld
10:32:07 AM     0     21541     32.00   1412.00      0.00  /usr/bin/monito

10:32:07 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:08 AM   995       648    128.00     20.00      0.00  mysqld

10:32:08 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:09 AM     0       295      0.00     16.00      0.00  jbd2/vda3-8
10:32:09 AM   995       648    344.00     24.00      0.00  mysqld

10:32:09 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:10 AM     0       295      0.00      8.00      0.00  jbd2/vda3-8
10:32:10 AM   995       648    336.00     32.00      0.00  mysqld
10:32:10 AM  1000     11144    148.00      0.00      0.00  php-fpm

10:32:10 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:11 AM     0       295      0.00      8.00      0.00  jbd2/vda3-8
10:32:11 AM   995       648     96.00      4.00      0.00  mysqld

10:32:11 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:12 AM     0       295      0.00     12.00      0.00  jbd2/vda3-8
10:32:12 AM   995       648   1204.00   1508.00      0.00  mysqld

10:32:12 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command

10:32:13 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:14 AM     0       295      0.00     12.00      0.00  jbd2/vda3-8
10:32:14 AM   995       648    192.00   2604.00      0.00  mysqld
10:32:14 AM  1000      2507     36.00      0.00      0.00  nginx

10:32:14 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:15 AM     0       295      0.00     32.00      0.00  jbd2/vda3-8
10:32:15 AM   995       648     16.00      4.00      0.00  mysqld
10:32:15 AM  1000      2507    168.00      0.00      0.00  nginx

10:32:15 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:16 AM   995       648    144.00    552.00      0.00  mysqld

10:32:16 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:17 AM   995       648    128.00     16.00      0.00  mysqld

10:32:17 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:18 AM   995       648     48.00      4.00      0.00  mysqld

10:32:18 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:19 AM     0       295      0.00      4.00      0.00  jbd2/vda3-8
10:32:19 AM   995       648      0.00    160.00      0.00  mysqld

10:32:19 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:20 AM   995       648      0.00      4.00      0.00  mysqld
10:32:20 AM     0       792      0.00      4.00      0.00  rsyslogd

10:32:20 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command

10:32:21 AM   UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
10:32:22 AM   995       648      0.00     16.00      0.00  mysqld

Average:      UID       PID   kB_rd/s   kB_wr/s kB_ccwr/s  Command
Average:        0       295      0.00      5.40      0.00  jbd2/vda3-8
Average:      995       648    140.53    270.06      0.00  mysqld
Average:        0       792      0.00      0.20      0.00  rsyslogd
Average:     1000      2507     10.19      0.00      0.00  nginx
Average:     1000     11144      7.40      0.00      0.00  php-fpm
Average:        0     21541      1.60     70.56      0.00  /usr/bin/monito
     
  19. Jun 25, 2017 #79
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    mysql and monitorix processes seem to be the highest disk i/o consumers but yeah 26% avaerage iowait with peak of 57% iowait does lend more to vps host node being busy.

    Time to find a new VPS host/plan for your sites. So far touch wood my 5x hostus OpenVZ VPS are still fine right now.
     
  20. Dec 24, 2017 #80
    eva2000

    eva2000 Administrator Staff Member

    54,336
    12,198
    113
    May 24, 2014
    Brisbane, Australia
    Ratings:
    +18,763
    Local Time:
    6:45 PM
    Nginx 1.27.x
    MariaDB 10.x/11.4+
    Wow it's nearly 1 yr since I purchased 5x HostUS.us $25/yr 2GB OpenVZ VPS discussed in this thread and I have just renewed them all for another full year :D

    For the price, they make excellent test VPSes for Centmin Mod users :D
     
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