Date: Wed, 14 Mar 2012 04:29:50 GMT From: Ryan Noll <rnoll.bsd@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/166071: High CPU Utilization on HylaFAX processes Message-ID: <201203140429.q2E4ToP6006281@red.freebsd.org> Resent-Message-ID: <201203140430.q2E4U1Wk036806@freefall.freebsd.org>
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>Number: 166071
>Category: kern
>Synopsis: High CPU Utilization on HylaFAX processes
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Wed Mar 14 04:30:01 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Ryan Noll
>Release: 9.0-RELEASE
>Organization:
>Environment:
FreeBSD buildports.rpn.local 9.0-RELEASE FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:46:30 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
When running HylaFAX processes (faxq and faxgetty) both processes will eventually consume near or exactly 100% WCPU (as reported by top) after less than a minute.
Attaching truss to the appropriate faxq process ID, the following is reported:
select(7,{6},{},{},0x0) = 1 (0x1)
read(6,0x7fffffffcf40,2047) = 0 (0x0)
[repeated until process is terminated]
Attaching truss to the appropriate faxgetty process ID, the following is reported:
read(4,0x7fffffffcf20,2047) = 0 (0x0)
gettimeofday({1329983307.368083 },0x0) = 0 (0x0)
gettimeofday({1329983307.368114 },0x0) = 0 (0x0)
select(9,{4 8},{},{8},{6.102623 }) = 1 (0x1)
gettimeofday({1329983307.368192 },0x0) = 0 (0x0)
read(4,0x7fffffffcf20,2047) = 0 (0x0)
gettimeofday({1329983307.368267 },0x0) = 0 (0x0)
gettimeofday({1329983307.368299 },0x0) = 0 (0x0)
select(9,{4 8},{},{8},{6.102438 }) = 1 (0x1)
[repeats until the process is terminated]
>How-To-Repeat:
Start the HylaFAX processes. Occurs with both MultiTech ZBA (serial and USB) and USR Courier (serial) modems. HylaFAX operated normally under FreeBSD 8.2-p6 i386.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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