<div dir="ltr">Btw, jiffies is now stored as a 64 bit variable internally in the kernel (not 32 bit), although to maintain compatibility with the older code, it can be still 'treated' as a 32-bit variable. In reality, overflow would take a lot more time than 497 days, but if you read only the first 32 bits, then you are right about the 497 day thing.<div>
<br></div><div>~Gaurav </div><div><br><div class="gmail_quote">On Thu, Sep 20, 2012 at 8:30 PM, Dave Hylands <span dir="ltr"><<a href="mailto:dhylands@gmail.com" target="_blank">dhylands@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<div><div class="h5"><br>
On Thu, Sep 20, 2012 at 7:09 AM, Fan Yang <<a href="mailto:lljyangfan@gmail.com">lljyangfan@gmail.com</a>> wrote:<br>
> hi all:<br>
> As far as I known, the var jiffies in the kernel will overflow after<br>
> 497days as the Hz defined 100. So what waill happen when the jiffies<br>
> overflow?<br>
<br>
</div></div>It will start back at zero.<br>
<br>
Everything should continue to work as before.<br>
<br>
In fact, jiffies are initialized to -300 seconds, so that it will<br>
overflow 5 minutes after startup, just to verify that everything works<br>
properly.<br>
<span class="HOEnZb"><font color="#888888"><br>
--<br>
Dave Hylands<br>
Shuswap, BC, Canada<br>
<a href="http://www.davehylands.com" target="_blank">http://www.davehylands.com</a><br>
<br>
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</font></span></blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr"><font face="arial, helvetica, sans-serif">Gaurav Jain</font><div><font face="arial, helvetica, sans-serif">Associate Software Engineer</font></div>
<div><font face="arial, helvetica, sans-serif">VxVM Escalations Team, SAMG<br></font></div><div><font face="arial, helvetica, sans-serif">Symantec Software India Pvt. Ltd.</font></div><div><font face="arial, helvetica, sans-serif"><br>
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