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https://issues.apache.org/jira/browse/NIFI-1208?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Bende updated NIFI-1208:
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Attachment: NIFI-1208.patch
Attaching a patch that adds a call to context.yield() when there is nothing to
do in onTrigger().
> ListenSyslog spin-loops CPU, spikes load to 150%
> ------------------------------------------------
>
> Key: NIFI-1208
> URL: https://issues.apache.org/jira/browse/NIFI-1208
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 0.4.0
> Environment: Raspbian Jessie (Debian-based), Raspberry PI 2, 1GHz x
> 4cores, 1GB RAM, Oracle JDK 8 for ARM
> Reporter: Andrew Grande
> Assignee: Bryan Bende
> Priority: Critical
> Attachments: NIFI-1208.patch
>
>
> I've installed today's NiFI 0.4.0 snapshot on the latest Raspberry PI and
> configured a syslog listener. After forwarding my RPI syslogs to this NiFi
> listener, things seem to work ok (for now just sending to a remote cluster
> for collection).
> However, 'top' shows that the nifi process taxes CPU at around 150%, varying.
> ListenSyslog stats show 1,500,000 tasks per a sliding 5min window.
> *Setup*: create a ListenSyslog on port 10001.
> As a root:
> # edit */etc/rsyslog.conf* file and add {noformat}*.*
> @127.0.0.1:10001{noformat} at the end
> # service rsyslog restart
> You can send test messages to syslog like this:
> {noformat}logger "This is the test message!"{noformat}
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