CPU Steal and IO Wait

Is this "normal"?


VPS seems to stop working after I do anything that causes a little more CPU usage.


  • Which provider? The latency seems outrageously high.

  • edited December 2023

    Tue 5 Dec 18:55:20 CET 2023

    Basic System Information:

    Uptime : 2 days, 18 hours, 47 minutes
    Processor : AMD EPYC 7282 16-Core Processor
    CPU cores : 4 @ 2794.748 MHz
    AES-NI : ✔ Enabled
    VM-x/AMD-V : ❌ Disabled
    RAM : 7.8 GiB
    Swap : 0.0 KiB
    Disk : 195.8 GiB
    Distro : Debian GNU/Linux 12 (bookworm)
    Kernel : 6.1.0-10-amd64
    VM Type : KVM
    IPv4/IPv6 : ✔ Online / ❌ Offline

    IPv4 Network Information:

    ISP : Contabo GmbH
    ASN : AS51167 Contabo GmbH
    Host : Contabo GmbH
    Location : Los Angeles, California (CA)
    Country : United States

    fio Disk Speed Tests (Mixed R/W 50/50) (Partition /dev/sda3):

    Block Size 4k (IOPS) 64k (IOPS)
    Read 5.29 MB/s (1.3k) 64.11 MB/s (1.0k)
    Write 5.32 MB/s (1.3k) 64.53 MB/s (1.0k)
    Total 10.61 MB/s (2.6k) 128.64 MB/s (2.0k)
    Block Size 512k (IOPS) 1m (IOPS)
    ------ --- ---- ---- ----
    Read 127.51 MB/s (249) 98.00 MB/s (95)
    Write 134.28 MB/s (262) 104.53 MB/s (102)
    Total 261.79 MB/s (511) 202.53 MB/s (197)

    iperf3 Network Speed Tests (IPv4):

    Provider Location (Link) Send Speed Recv Speed Ping
    Clouvider London, UK (10G) busy 85.2 Mbits/sec 11.1 ms
    Scaleway Paris, FR (10G) busy busy 14.2 ms
    NovoServe North Holland, NL (40G) 190 Mbits/sec 194 Mbits/sec 4.85 ms
  • cpu steal is normal on a share core vps, if it is extremely high for long periods you have been placed on a core with some abusers, and recommend asking to be moved off that node to one with less abuse, IO wait would also be the same, depending on how much usage is getting used by other users.

    ah contabo, they are very stable, but their limits are very strict and will not change them, your NVMe or SSD storage is capped really bad, and they will limit the cpu for no reason, but I will have one in Sydney for small things, but only a 200mbps system, I would not really get anything bigger than that with them.

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  • Running YABS crashed the system :#

  • uh, Contabo overselling again, ask for migration to another Node or choose another provider.

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    @AaronSS said:
    Running YABS crashed the system :#

    ask to move to another node :) at least try

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  • With st-hosting is very similar.

  • The link you gave shows an average "cpu steal" of 3% or something, why are you claiming that this is the issue? it doesn't make sense
    what does "running yabs crashed the system" even mean? did it get rebooted? kernel panic? what?

  • edited December 2023

    @AaronSS said:
    Running YABS crashed the system :#

    Contabo is overselling like crazy.
    If you check with top you will see a pretty good percentage of steal.
    When I was there years go I had over 20% of steal at some points.
    But was steadily around 8-10%.
    Asked them why and needed to provide a lot of images and explanation.
    After that they moved me down their product line to an older CPU.
    Shortly after even this node started to go bad and the percentage went up.

    After that I just left and never looked back.
    You get Hetzner ARM cloud instamce for similar price and that works a lot better.
    Or a lot of different providers here as well.
    I moved many of the things from Contabo to Inceptionhosting and never looked back.
    Since then I have gotten a lot more different ones for a lot of other things, and every one of them are better then Contabo 😀

  • No surprise with Contabo. Last time I tried it it looked good for a couple of days and then disaster with CPU steal reaching 80% if I remember correctly :D

    404 Error: Signature Not Found

  • Check your swappiness value. Could be system starts swapping at 40% ram usage already, as is the default value.

    Hey teamacc. You're a dick. (c) Jon Biloh, 2020.

  • wehostwehost Hosting Provider

    Look like resource overselling and it is important to detect this type of performance degradation in the VM so that you can mitigate the cause of poor system and application performance.

  • Bro, cancel that Contabo and move on...

    Thanked by (1)kvidden
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