Each release of Domino adds new and exciting features, which reminds me if this graphic
But a side-effect of this is that the memory space on 32bit Domino is getting more and more crowded and the amount of shared memory Domino is pushing into all the different Domino tasks continues to grow.
When memory gets tight, we've seen situations (particularly in FP2 and FP3 of Domino 8.5.2) where Domino no longer plays nice and sometimes tasks can be terminated even if idle.
With Defrag.NSF 2.09 we've moved all Defragmenation tasks into a separate process space to ensure that memory crowding (for us at least) will no longer be an issue. It also appears to have a slight performance benefit... very nice.
How to make DBMT 50%+ more efficient
Thu, Aug 28th 2014 12:05a Adam Osborne DBMT is a wonderful new feature in Domino 9, but it has a nasty habit of doing more work than it needs to. Our tests show that it can spend a considerable amount of time compacting databases that just DON'T need to be compacted. Even if there is no space to recover in a given database DBMT will still compact it according to the -compactNdays setting. In production this could equate to a huge number of databases and possibly hours of processing. Why do all the work of manufacturing new "copie [read] Keywords: domino
Flashback Friday: Compact -c and fragmentation
Thu, Aug 21st 2014 10:45p Adam Osborne Each Friday we going to present some of our older blog postings that covers a topic that we still get questions on. In this week's flashback we are going to look at compact -c and how it fragments databases. Remember that under the covers DBMT does a compact -c Enjoy http://www.preemptive.com.au/files/NewCompact.html [read] Keywords:
No Auslug this year - from one of the Best to a non-event in three years.
Wed, Jul 23rd 2014 9:05p Adam Osborne It was rather sad to hear today that there will be no Auslug this year. I'm not sure why but my best guess is the ecosystem that was IBM Lotus in Australia is now so ill that a free event just can't be supported. I've written about this previously. As previously mentioned, the people that try to organise these events do an amazing job but it all comes at a cost. They need vendor support and vendors need customer who are willing to buy stuff. The committee is trying to put together an even [read] Keywords: ibm
Busting a DBMT pre-allocation Myth
Thu, Jul 10th 2014 9:05p Adam Osborne Some say you no longer need to worry about fragmenation now DBMT has a new pre-allocation feature - sorry that's not the case. Let me explain: DBMT uses copy style compacts when it's reorganizing a target database. We've written numerous times about how copy style compacts have a nasty fragmentation side-effect. See here and here and here. IBM must of been listening to us because they attempted to address this with new pre-allocation functionality in Domino 9.0.1. The concept is that DBMT [read] Keywords: domino