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XG VM crashes and performance

Alex N

Gents,

3rd day running XG on ESXi 6.7, and after dealing with licensing issue, let me ask another set of newbie questions:
1) XG VM is installed on SSD datastore, with 4 vCPUs and 8 GB or RAM, 4x VXMNET3 vNICs (which is recommended NIC type AFAIK). CPU never goes beyond 20%, memory (according to XG stats) 54%.

2) as soon as I increase LAN interface MTU to 9000 - XG  crashes / reboots in cycle. Nothing in /var/cores, syslog before reboot only shows tons of
Mar 3 10:16:36 (none) user.err kernel: [ 357.728901] 996.769636 [ 317] vmxnet3_netmap_rxsync 155 skipped! rx_idx 256
Mar 3 10:16:36 (none) user.err kernel: [ 357.728901] 996.769636 [ 317] vmxnet3_netmap_rxsync 156 skipped! rx_idx 256

Why MTU change kills it ? And where to find crash logs, as they appear on VM screen only momentarily, I can't really capture any details

3) Performance is kind of low. Speedtest from laptop shows 100Mbps down, 80-90 up, but PPPoE line is 600Mbps. (ESXi host is good enough, even heavy-weight PANOS VM gets nearly linerate performance on it). Initial access to  sites is damn slow, it looks like when I first open website - it takes like 10 seconds or more to load, but then navigation gets better. Any hints/best practices how to improve XG throughput/performance ?



BR,
Alex



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  • 0

    Hi Alex,

    all you figures seem very high, what is the cpu? With a new installation you should be running about  30 to 40% ram. Sounds like a configuration issue. My hardware system runs 55% ram and idles about 5% cpu but does get excited occasionally.

    did you lock the resources to the XG only?

    XG115W - v20 GA - Home

    XG on VM 8 - v20 GA

    If a post solves your question please use the 'Verify Answer' button.

  • 0 in reply to rfcat_vk

    Well, in average idle state it's 3% CPU (20% is max value VMWare ever saw) and 54% RAM
    Host CPU is 4 CPUs x Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz, and apart from XG runs few low-volume Linux workloads, so host CPU avg usage is 5%. Host RAM is 65% free, so resources shouldn't be an issue 

  • 0 in reply to Alex N

    Hi Alex,

    the XG requires exclusive use of CPU, RAM and disk. If it is sharing then you will have performance and stability issues.

    Ian

    XG115W - v20 GA - Home

    XG on VM 8 - v20 GA

    If a post solves your question please use the 'Verify Answer' button.

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  • 0 in reply to Alex N

    Hi Alex,

    the XG requires exclusive use of CPU, RAM and disk. If it is sharing then you will have performance and stability issues.

    Ian

    XG115W - v20 GA - Home

    XG on VM 8 - v20 GA

    If a post solves your question please use the 'Verify Answer' button.

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