Re: DBWn performs batched (multiblock) writes to improve efficiency
- From: Tanel Põder <tanel.poder.003@xxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 22 Apr 2004 00:26:44 +0300
Thanks Mladen,
I've actually used all strace, truss and tusc on Unixes - I just didn't
think that one could use cygwins strace on windows. Does it actually work?
(there are some things like tail -f on open file which don't work under
cygwin).
Btw, what do you mean by "seeing" complete server side code in VMS?
Tanel.
> Tanel, you want to take a look at the strace utility, which exists on both
> Linux and CYGWIN. It traces all system services that a prices makes, IO
calls
> included. On Solaris, the same utility is called "truss", while HP-UX has
"tusc".
> AIX 5.2 also has truss, while Irix has something called "par". On my
favorite
> OS of all times, I could do run/debug ORACLE_HOME:[bin]sqlplus, and, if
linked
> in the "single task mode", I would see the complete code of the server
side.
> Dave Cutler turned such a noble OS into a hideous monstrosity that has
ruined
> so many good PC's.
>
> On 04/21/2004 04:57:40 PM, Tanel P?der wrote:
> > I tested with 10g on linux and saw up to 112k coalesced writes (that was
the
> > maximum in my system), however I couldn't test this on 9.2 nor 10g beta
on
> > my windows (the _dbwr_tracing seems to behave differently in these and I
> > don't have any utility to trace IO system calls in windows).
> --
> Mladen Gogala
> Oracle DBA
>
>
>
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