lkml.org 
[lkml]   [1998]   [Sep]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectClosure Re: 2us Interrupt latency's for Linux 2.0.xx

Ok, Jeff pointed out a similar discussion that happened just a few days
ago.. I should have checked it out before posting the question.

Andreas posted a release of his lil package on Aug 27. He notes that linux
shows periodic high interrupt latency due to large amount of time
(~15us) spent in the bottom handler processing in IRQ0.

I suppose, the latencies I see every 30-35 second period are due to the
same 'feature'. The linux bottom halfs and my interrupt run at slightly
different frequencies and they probably have an lcm of about 30-35
seconds, causing them to clash periodically. (IRQ0 wins ofcourse since its
highest priority)

I shall ofcourse do a lil more math to satisfy myself.. if anyone is
interested .. I can keep you posted.




===========================================================================
-|-
------------(o)------------
MANOJ APTE 500 Louisville St.
Computer Science Apt #59
Starkville, MS 39759
email: manoj@erc.msstate.edu
phone: (601)-325-2476 (off) ENGINEERING RESEARCH CENTER.
(601)-323-8160 (res) Mississippi State University.

homepage: http://www.erc.msstate.edu/~manoj
============================================================================






-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.altern.org/andrebalsa/doc/lkml-faq.html

\
 
 \ /
  Last update: 2005-03-22 13:44    [W:0.051 / U:0.908 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site