[dtrace-discuss] Inconsistent timestamps in DTrace output

Andrew Addison
Tue, 03 Jun 2008 16:39:36 -0000

Hi,



We''re having problems with some of the timestamps produced by dtrace
where they seem to be roughly doubled (the following snippet is from the
attached log file):



3037095639860141 on-cpu 1 4 59

3037095639864555 off-cpu 1

3037095649855777 on-cpu 1 4 59

3037095650461752 off-cpu 1

6074193317343753 on-cpu 1 1 59

6074193318047271 off-cpu 1

3037096589857081 on-cpu 1 4 59

3037096589861755 off-cpu 1



The attached script file (''t'') was used to produce the output
and we
used vmstat for the test. (> t vmstat )



We''re using HP 585 G2 (4CPU dual core AMD Opteron) boxes running
Solaris
10 update 3.



Is this a known issue? Is there a fix?



Cheers,

Andrew
















Andrew Addison

BJSS Ltd., 1st Floor, Coronet House, Queen Street, Leeds, LS1 2TW

Tel: +44 (113) 297 9797

Fax: +44 (113) 297 9798

Website: www.bjss.co.uk <http://www.bjss.co.uk/>

Email: andrew.addison at bjss.co.uk

RM: andrew.addison.bjss.co.uk at reuters.net





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