[LEAPSECS] Leapseconds, more evidence

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Jul 3 10:03:40 EDT 2012

>The original source may be this:


> https://plus.google.com/117024231055768477646/posts/2pkWbDiEDQG

I have received several copies of the email Hetzner sent out to their
customers, so the above was probably just for one (big!) customer:

> During the night of 30.06.2012 to 01.07.2012 our internal

> monitoring systems registered an increase in the level of

> IT power usage by approximately one megawatt.


> The reason for this huge surge is the additional switched

> leap second which can lead to permanent CPU load on Linux

> servers.


> According to heise.de, various Linux distributions are

> affected by this. Further information can be found at:


> http://www.h-online.com/open/news/item/Leap-second-Linux-can-freeze-1629805.html


> In order to reduce CPU load to a normal level again, a

> restart of the whole system is necessary in many cases.

> First, a soft reboot via the command line should be

> attempted. Failing that, you have the option of performing

> a hardware reset via the Robot administration interface.

> For this, select menu item "Server" and the "Reset" tab

> for the respective server in the administration interface.


> Please do not hesitate to contact us, should you have any

> queries.


> Kind regards,


> Hetzner Online AG

Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.

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