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NSM: add --no-hwtimestamp to netsniff command line #1514

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dougburks opened this issue May 1, 2019 · 2 comments

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commented May 1, 2019

We identified an issue today with Suricata and netsniff-ng. netsniff-ng attempts to use hardware timestamps if possible and this can cause Suricata to spike to 100% CPU and not process traffic. This can be resolved by disabling hardware timestamps in netsniff-ng.

   -N, --no-hwtimestamp
       Disable taking hardware time stamps for RX packets. By default, if the network device supports hardware time stamping, the hardware time stamps will be used when writing packets to pcap files. This option disables this behavior and forces (kernel based) software time
       stamps to be used, even if hardware time stamps are available.

Also see:
https://redmine.openinfosecfoundation.org/issues/2954

dougburks added a commit to Security-Onion-Solutions/securityonion-nsmnow-admin-scripts that referenced this issue May 1, 2019

@dougburks dougburks self-assigned this May 1, 2019

@dougburks dougburks added this to To do in 16.04.6.1 via automation May 1, 2019

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commented May 1, 2019

@dougburks dougburks moved this from To do to In Testing in 16.04.6.1 May 1, 2019

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commented May 2, 2019

@dougburks dougburks closed this May 2, 2019

16.04.6.1 automation moved this from In Testing to Done May 2, 2019

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