Re: Fwd: Sendmail eats CPU on r317039 [after -r316874 it may be -r316951 and -r316973 are not enough to fix everything]

[Ronald Klop]

there is a thread ono this list about a problem in syslogd which made  
syslog-clients (like sendmail busy-looping on logging.
That might be related to this. (it is fixed in the source already, so  
upgrading again might help)
See the thread with subject like 'Re: r316958: booting a server takes >10  
minutes!'


Regards,

Ronald.



On Mon, 17 Apr 2017 16:57:39 +0200, Mark Millard   
wrote:



Just an FYI of a more recent report of runaway sendmail on a
more recent system version ( -r317039 ):

Begin forwarded message:


From: Tom Vijlbrief 
Subject: Sendmail eats CPU on r317039
Date: April 17, 2017 at 3:39:37 AM PDT
To: "freebsd-current at freebsd.org" ,  
freebsd-arm 


On a recent kernel sendmail is constantly consuming CPU.

truss -p PID

shows:

sendto(3,"<22>Apr 17 10:30:33 sendmail[362"...,163,0x0,NULL,0) ERR#55  
'No

buffer space available'
nanosleep({ 0.01000 }) = 0 (0x0)
sendto(3,"<22>Apr 17 10:30:33 sendmail[362"...,163,0x0,NULL,0) ERR#55  
'No

buffer space available'
nanosleep({ 0.01000 })
...

This is on an arm64 system


Analysis of Tom V.'s context for this may be required.

===
Mark Millard
markmi at dsl-only.net

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Fwd: Sendmail eats CPU on r317039 [after -r316874 it may be -r316951 and -r316973 are not enough to fix everything]

[Mark Millard]

Just an FYI of a more recent report of runaway sendmail on a
more recent system version ( -r317039 ):

Begin forwarded message:

> From: Tom Vijlbrief 
> Subject: Sendmail eats CPU on r317039
> Date: April 17, 2017 at 3:39:37 AM PDT
> To: "freebsd-current at freebsd.org" , 
> freebsd-arm 
> 
> On a recent kernel sendmail is constantly consuming CPU.
> 
> truss -p PID
> 
> shows:
> 
> sendto(3,"<22>Apr 17 10:30:33 sendmail[362"...,163,0x0,NULL,0) ERR#55 'No
> buffer space available'
> nanosleep({ 0.01000 }) = 0 (0x0)
> sendto(3,"<22>Apr 17 10:30:33 sendmail[362"...,163,0x0,NULL,0) ERR#55 'No
> buffer space available'
> nanosleep({ 0.01000 })
> ...
> 
> This is on an arm64 system

Analysis of Tom V.'s context for this may be required.

===
Mark Millard
markmi at dsl-only.net

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