# What is the cause of the demand spikes?

**URL:** <https://community.ntppool.org/t/what-is-the-cause-of-the-demand-spikes/2450>\
**Category:** Server operators\
**Created:** [June 10, 2022, 3:55pm UTC](https://community.ntppool.org/t/what-is-the-cause-of-the-demand-spikes/2450 "2022-06-10T15:55:03Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![stevesommars](https://sea2.discourse-cdn.com/flex016/user_avatar/community.ntppool.org/stevesommars/32/2075_2.png) [@stevesommars](https://community.ntppool.org/u/stevesommars)\
**Post date:** [June 11, 2022, 2:08am UTC](https://community.ntppool.org/t/what-is-the-cause-of-the-demand-spikes/2450/8 "2022-06-11T02:08:17Z")

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[systemd-timesyncd](https://community.ntppool.org/t/uncommon-load-question-many-packets-from-one-ip/2187/4) can create bursts of NTP requests.  
[FortiGate firewalls](https://weberblog.net/fortigate-bug-firewalls-sending-excessive-requests-to-the-ntp-pool/) has created NTP bursts for several years.

Packet captures may help track down the sources.

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