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paustin_ours
PostPosted: Thu May 21, 2015 10:13 am    Post subject: leap second mq Reply with quote

Yatiri

Joined: 19 May 2004
Posts: 667
Location: columbus,oh

what precautions are you guys taking if any for the below?

http://www-01.ibm.com/support/docview.wss?uid=swg21602521
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mqjeff
PostPosted: Thu May 21, 2015 10:20 am    Post subject: Reply with quote

Grand Master

Joined: 25 Jun 2008
Posts: 17447

Quote:
This problem is solved by either applying Operating System (Linux) patches, resetting the date or rebooting the system. The resolution is dependent on your level of Linux and your environment. Please consult your Linux provider for details of the solution appropriate for your system.


????
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Vitor
PostPosted: Fri May 22, 2015 4:21 am    Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 26093
Location: Texas, USA

mqjeff wrote:
Quote:
This problem is solved by either applying Operating System (Linux) patches, resetting the date or rebooting the system. The resolution is dependent on your level of Linux and your environment. Please consult your Linux provider for details of the solution appropriate for your system.




a) it's an OS problem so not mine (in this particular site)
b) you should be patched up to date anyway
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gbaddeley
PostPosted: Sun May 24, 2015 4:30 pm    Post subject: Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2492
Location: Melbourne, Australia

http://en.wikipedia.org/wiki/Leap_second
"Since this system of correction was implemented in 1972, 26 such leap seconds have been inserted. The most recent one happened on June 30, 2012 at 23:59:60 UTC. A leap second will again be inserted at the end of June 30, 2015 at 23:59:60 UTC."

Did anyone notice any impact to MQ last time this happened?
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Glenn
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tczielke
PostPosted: Sun May 24, 2015 5:20 pm    Post subject: Reply with quote

Guardian

Joined: 08 Jul 2010
Posts: 939
Location: Illinois, USA

This is the blurb from the IBM support doc from what happened to MQ the last time a leap second was added to Linux in 2012.

Quote:

Previously, on 30 June, 2012 a leap second was added. Due to this, it was subsequently observed that a WebSphere MQ queue manager, running on Linux OS, generated many FDC files related to resource issues or constraints; these FDCs were commonly reporting rc=xecP_E_NO_RESOURCE.

You may also see your queue manager hang or freeze or there may be high cpu. The FDCs are being generated on a daily basis and may have probes of XY348010 or XC272003 from xcsCreateThread but there could be other FDCs with different probes also.


I hope everyone enjoys their extra second on June 30, 2015!
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bruce2359
PostPosted: Sun May 24, 2015 6:00 pm    Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9394
Location: US: west coast, almost. Otherwise, enroute.

I'm taking that second off.
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gbaddeley
PostPosted: Mon May 25, 2015 5:58 pm    Post subject: Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2492
Location: Melbourne, Australia

I intend to enjoy the 1 second of extra sleep. I need it.
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Glenn
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rammer
PostPosted: Mon May 25, 2015 7:11 pm    Post subject: Reply with quote

Partisan

Joined: 02 May 2002
Posts: 359
Location: England

Im claiming the overtime!
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vennela
PostPosted: Wed May 27, 2015 1:16 am    Post subject: Reply with quote

Jedi Knight

Joined: 11 Aug 2002
Posts: 4055
Location: Hyderabad, India

rammer wrote:
Im claiming the overtime!


Hopefully the charge back code (claim codes) or published by then
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fjb_saper
PostPosted: Wed May 27, 2015 4:54 am    Post subject: Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20696
Location: LI,NY

vennela wrote:
rammer wrote:
Im claiming the overtime!


Hopefully the charge back code (claim codes) or published by then

Not when creating the code is more expensive than what the overtime is worth...
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tczielke
PostPosted: Sun Dec 25, 2016 12:31 pm    Post subject: Reply with quote

Guardian

Joined: 08 Jul 2010
Posts: 939
Location: Illinois, USA

FYI - One more leap second at the end of 2016 -> https://www.timeanddate.com/news/time/leap-second-add-december-2016.html
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bruce2359
PostPosted: Sun Dec 25, 2016 4:33 pm    Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9394
Location: US: west coast, almost. Otherwise, enroute.

I'm a bit busy right now, please hold on a leap-second.
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tczielke
PostPosted: Sun Dec 25, 2016 5:03 pm    Post subject: Reply with quote

Guardian

Joined: 08 Jul 2010
Posts: 939
Location: Illinois, USA

When they do the New Year countdown, I want to hear "5 - 4 - 3 - 2 - 1 - 1 - New Year!"
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bruce2359
PostPosted: Sun Dec 25, 2016 5:05 pm    Post subject: Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9394
Location: US: west coast, almost. Otherwise, enroute.

Headline: Because Earth is slowing down, we will synchronize our clocks by adding a leap second just before we enter 2017.

Watch as global warming/climate change is determined by scientists to be the cause of earth's slowing.
https://www.timeanddate.com/news/time/leap-second-add-december-2016.html
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I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live.
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tczielke
PostPosted: Sun Dec 25, 2016 5:23 pm    Post subject: Reply with quote

Guardian

Joined: 08 Jul 2010
Posts: 939
Location: Illinois, USA

The Earth's population does keep going up. Maybe it's all the extra people weight. I know I'm not helping with what all I've been eating for the holidays . . .
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