Hi Jan, There is a call to flush the DbCache for NVFS devices like the T5. The call is DmSyncDatabase. Here is a link to reference data on it:
<http://www.palmos.com/dev/support/docs/palmos/PalmOSReference/DataAndRe sourceManager.html#1053148> Hope that helps you, Aaron Hansen >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] On Behalf Of Jan Slodicka >Sent: Wednesday, March 02, 2005 9:20 AM >To: Palm Developer Forum >Subject: Re: NVFS performace - purging DbCache > > >Replying to myself... > >> It looks like the DmCloseDatabase writes back the DB header, >although >> I > >That's probably not the right idea because closing the >database happens always in exactly the same way, while the >speed loss is apparent only in case when DBCache is full. >It'll be rather that the T5 scans for free space in the >DBCache and because it is full, it takes so long. > >Not a very good message for T5 users as every one sooner or >later will fill up the DBCache. Isn't there any other way >except a reset? > >The deeper I understand T5, the more I like T3. > >Jan Slodicka > > >----- Original Message ----- >From: "Jan Slodicka" <[EMAIL PROTECTED]> >To: "Palm Developer Forum" <palm-dev-forum@news.palmos.com> >Sent: Wednesday, March 02, 2005 2:57 PM >Subject: NVFS performace - purging DbCache > > >> Hello, >> >> there was enough discussion on NVFS so far, but (in my opinion) the >> following behavior was not explained: >> >> First the summary: >> After DBCache gets filled, the opening of the RAM databases >> dramatically slows down. >> >> Actually the sequence of the operations that slows down is >> DmOpenDBNoOverlay() with dmModeReadOnly >> DmCloseDatabase() >> (I eliminated all intermediate code for the test purposes so that it >> is >sure >> that exactly these commands are responsible for the effect.) >> >> It looks like the DmCloseDatabase writes back the DB header, >although >> I can't find any reason for it. >> >> Does anybody know a workaround? >> >> Best regards, >> Jan Slodicka > > >-- >For information on using the Palm Developer Forums, or to >unsubscribe, please see http://www.palmos.com/dev/support/forums/ > > -- For information on using the Palm Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
