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These are kept in a VCF file, located under $HOME/.kde/share/apps/kabc. You are quite correct to be concerned with that many addresses in kaddressbook and performance. The VCF file is essentially a flat text file, and with 10,000 records in it, it would be huge.

I would look at setting up a basic LDAP server to hold that many records. I'm not sure how nicely kaddressbook plays with LDAP. I know that there is LDAP integration, but it may be limited to 'look as you type', rather than the whole thing. Perhaps speaking directly to the devs would be helpful.

I am using SuSE Linux 10.2. Everything has been working great but I have been adding a substantial number of contact to Kaddressbook. I am now up to 1,200 and it has become so slow it's virtually unusable. Updating contact information takes so many resources that it almost freezes the system (Athlon 64/1 Gig RAM) and takes up to 2-3 minutes to update the contact information. Same phenomenon occurrs in any system (load vcf file...all running SuSE Linux). It does look like the .vcf file structure may be the problem. Are there any settings that I can change? Should I switch Linux distros? Is this a dark conspiracy on Novell's part to make everyone use Evolution? (I imported the VCF file into Evolution and it works lightning fast!). Can Kaddressbook use a different file format or and LDAP database as mentioned in the previous email?

Thanks,
Roger

I am not certain how Evolution handles its contacts, but based upon the dramatic differences, I can only assume that it loads contacts into some kind of database, rather than a solitary flat file. Flat files are notoriously slow for large data sources. I would drop a line to the developers, and see if they can switch the backend to sqlite or something. They may ask for your contact list, so you might want to think about scrubbing it.

The problem with programmers is that we never have that many friends.