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Seriously Slow Performance, crawling #208
silas@… originally submitted this as ticket:252
We've implemented iCal and are having some serious performance issues. iCal server stats as reported by caladmin: 162 accounts, 65 calendars, 100 groups, 3000+ events, disk usage is 30kb on Intel Xserve Leopard server 10.5.2 with 54 OD accounts. We have all users calendars delegated to all other users, and about half of those users viewing all others calendars. We have a good DNS and resolution. When a user opens their iCal it may take up to 20 minutes to an hour or more for their calendar to sync, and the server pegs out at 75-100% cpu usage for all the python processes _Calendar user. Not to mention that it takes forever for iCal to display the available calendars for access in the preferences. All machines are leopard and bound to the OD, single server setup. Please let me know if I can help.
Unknown if this is related or not but provided in case it is, Sunbird will not connect to any users calendar for the few windows clients, error "not a dav collection or not available"
Silas Thomas silas@… International Affairs University of Oregon
Performance appears to degrade quickly when lots of delegates are in play, and you seem to have all users as delegates of all other users…
Need to look into what we can do to optimize the common queries, perhaps even caching responses.
We've done a lot of work in version 2 to address these problems, including much better performance with respect to delegate queries and caching of common responses to clients.