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  • 1.  vMX boosting performance in eve-ng

    Posted 12-12-2023 13:21
    Edited by Simon Bingham (technical debt collector) 12-12-2023 14:32

    My vMX seems to be struggling  my server has plenty for RAM and CPU. 
    Does anyone have a formula for adding more Memory and CPU, I have tryed added 4x the default memory to both VCP and VFP and it killed my vMX totally. 

    so I built a new one with 4x memory and the the interfaces do not seem to come up, 
    Any changes I make to the memory will result in the interfaces not coming up on the MX. even on a brand new install that has never been booted up. 



    JNCIE-ENT 907

  • 2.  RE: vMX boosting performance in eve-ng

    Posted 12-12-2023 15:16

    Can you share the QEMU command lines once you've launched the VMs?

    Also if you can get into the QEMU monitor, do "info kvm" and "info block" for starters.

    the version on the VCP looks odd - 1) we never shipped 23.3 and even if we did, there isn't a R1.13 spin of it? can you check the release version again? Thinking it's probably a 23.2R1.13 image?  Are you using the standard XML that was supplied with the vmx bundle to launch this or ?


    Art Stine

  • 3.  RE: vMX boosting performance in eve-ng

    Posted 12-12-2023 15:38

    Hi Art
    its typo on my part , code is 23.2R1.13 your quite correct 
    Thanks I might have a work around as I noticed my version 22.3R1.11 do not have the same issue I have span them up with extra memory. 
    My Lab in eve-ng is a test of a customer environment I have  and the customer environment is actually older code, ( 21.4R3)  I'm just testing some BGP and route redistribution. 
    it has 250k routes ( in the lab )  this because the design calls for 20-30 routing instances they have a copy of the routing table each. )
    But seems to be becoming sluggish and crashing. 
    Would more memory help ? would more CPUs help ? 

    I'm not sure what QEMU monitor is, I will google and get back, 



    JNCIE-ENT 907

  • 4.  RE: vMX boosting performance in eve-ng

    Posted 12-12-2023 18:49

    What's the host environment where eve-ng is running (is it running on bare metal or inside a VM on some host?) 

    It would be useful to get ahold of the serial console logs to see if it's getting wedged up somewhere or something. Adding more memory to the VCP probably wouldn't help if you're already at 8G - more cpu cores would tho - 1 vCPU is a little light these days. How many cores are available to the vFP ? If your host machine memory is limited, adding a ton more memory to the VMs might trigger the OOM killer in linux (out of memory) so seeing what the host has would help to know:

    # lscpu

    # cat  /proc/meminfo 

    Art Stine

  • 5.  RE: vMX boosting performance in eve-ng

    Posted 12-13-2023 03:55

    Hi Simon,

    The minimum CPU for VCP 1 and for VFP 3, but more never hurts :)