Definitely 'D' as in "Disk I/O", if you type "1" while runing top, the results for each CPU are displayed separately und you will find at least 1 line (not necessarily always the same line) with a significant percentage of "wa" (I/O wait state).
Apparently your transactions involve very much more data changes than computations. A common reason ist hat you are running. each. change. in. a. separate. transaction. As suggested, try grouping several (the optimal size typically ranges from 100s to 1000s) small updates into a single transaction so that all the changes hit the disk together instead of separately. -----Ursprüngliche Nachricht----- Von: sqlite-users [mailto:sqlite-users-boun...@mailinglists.sqlite.org] Im Auftrag von Kevin O'Gorman Gesendet: Dienstag, 21. Februar 2017 19:22 An: sqlite-users <sqlite-users@mailinglists.sqlite.org> Betreff: [sqlite] Linux top command and sqlite I'm not at all sure this is the right place to ask, but as it only comes up when I'm running one of my sqlite jobs, I thought I'd start here. I'm running Python 3.5 scripts in Linux 16.04.1 using the sqlite3 package. Machine is Core i5, 32GB RAM. Some of my stuff takes a while to run, and I like to keep tabs on it. Right now, I'm running one of those, and the Linux top command shows extremely small CPU usage, and a status ("S" column) of "D" which the man page defines as "uninterruptable sleep". Huh? My code does not use an intentional sleep at all. It's traversing parts of a graph, and not interacting with anything else. As far as I know, anyway, and I wrote the whole thing. Now it's true that it's updating the consequences of changes to graph nodes that took about 3 hours just to install, so taking a while is not a surprise by itself. I just wonder what that status means and how it could arise. -- word of the year: *kakistocracy* _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users ___________________________________________ Gunter Hick Software Engineer Scientific Games International GmbH FN 157284 a, HG Wien Klitschgasse 2-4, A-1130 Vienna, Austria Tel: +43 1 80100 0 E-Mail: h...@scigames.at This communication (including any attachments) is intended for the use of the intended recipient(s) only and may contain information that is confidential, privileged or legally protected. Any unauthorized use or dissemination of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the sender by return e-mail message and delete all copies of the original communication. Thank you for your cooperation. _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
