(Illustration by Gaich Muramatsu)
On Wed, Dec 22, 1999 at 10:47:46AM -0800, Phil Nelson wrote: > I just thought some of you might be interested in the difference > in server startup between anonymous mapping and private mapping. Ok, I'll summarize, as probably everyone will try to duplicate this calculation at the moment anonymous RVM data mapping -------------------------- > 10:07:23 Setting Rvm Truncate threshhold to 5. > 10:09:41 Partition /vicepa: 5346725K available (minfree=5%), 5312484K free. > 10:09:54 File Server started Wed Dec 22 10:09:54 1999 RVM loading 02:18 Checking and attaching volumes 00:13 ----- 02:31 total time private RVM data mapping ------------------------ > 10:14:12 Setting Rvm Truncate threshhold to 5. > 10:14:12 Partition /vicepa: 5346725K available (minfree=5%), 5312484K free. > 10:14:20 File Server started Wed Dec 22 10:14:20 1999 RVM loading 00:00 Checking and attaching volumes 00:08 ----- 00:08 total time I guess that in the anonymous case the additional memory pressure causes more paging and swapping, which accounts for the longer `checking and attaching' time. Impressive, I'm temped to measure the difference on viotti, one of our servers, but it uses a partition for RVM data, and Linux won't mmap raw disks. JanReceived on 1999-12-22 14:24:19