https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=209368
Bug ID: 209368
Summary: [PATCH] bsnmpd: snmp_hostres: Only refresh devtree if
devd event is a new or removed device
Product: Base System
Version: 10.0-STABLE
Hardware: amd64
OS: Any
Status: New
Keywords: patch
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: freebsd-bugs@FreeBSD.org
Reporter: mar...@freebsd.org
CC: freebsd-am...@freebsd.org
CC: freebsd-am...@freebsd.org
Keywords: patch
Created attachment 170101
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=170101&action=edit
Only refresh device table on a device add or remove event
In a recent update of 10-STABLE, devd began spewing:
!system=CAM subsystem=periph type=error device=cd0
serial="10000000000000000001" cam_status="0xcc" scsi_status=2 scsi_sense="70 02
3a 00" CDB="00 00 00 00 00 00 "
This caused bsnmpd to take up nearly 100% of the CPU refreshing the devtree
table every second. Admittedly, this is an issue in the CAM driver, but why
refresh the whole tree each time a device is not either inserted or removed?
The attached patch corrects this by only refreshing the devtree when a device
is added or removed.
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