On Fri, 2006-06-16 at 07:11 +0200, Knut Yrvin wrote: > So the startup time is 5-6 sec on a system with enough RAM, and the > main applications already used earlier on the day (stored in the temp > area in RAM). When the system uses swapping on disk, the performance > drops drastic.
Your disk performance also drops down heavily, especially when users start Gnome or OpenOffice.org, and the disk needs access to lots of little files, while at the same time, it's reading/writing to swap that's probably at the other end of the disk. By then you're getting no where close to 80MB/s, and the system gets very, very sluggishly. Spanning swap over two disks also helps. I don't know exactly how clever the kernel is with spanning, and whether it will write to the disk that is least busy, but I've definitely seen performance improvements when spanning a swap file over disks. -Jonathan -- edubuntu-users mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/edubuntu-users
