FC4 possible kernel 2.6.15 issue - debugging parameters are enabled

Dave Jones davej at redhat.com
Sat Mar 4 03:01:07 UTC 2006

On Fri, Mar 03, 2006 at 11:02:46PM +1100, David Timms wrote:
 > Skunk Worx wrote:
 > >I use the GSOAP soap server toolkit for transferring data.
 > >
 > >Prior to kernel 2.6.15 I could pull about 3000 data items a second using 
 > > the various persistent http connection toolkit options over TCP/IP.
 > >
 > >Under 2.6.15 I am lucky to get 100 items/sec using the same codebase.
 > >
 > >Reverting only the kernel, back to the last 2.6.14 in yum updates, fixes 
 > >it.
 > Dave Jones mentioned that there is some serious debugging enabled in the 
 > kernel (for the last month ?), and this is causing some slowness (eg for 
 > 3D).

that was rawhide (or possibly an fc4 update during testing period),
this is a released FC4 update, which doesn't have that enabled.


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