On Wed, Feb 06, 2008 at 09:23:28AM -0800, [EMAIL PROTECTED] wrote: > Dear FreeBSD Developers, > > I have a few suggestions for how FreeBSD can be > improved in an upcoming release.
Sounds like you have your work cut out for you. ////jerry > > My first is to allow for dynamically resizeable swap > file of some sort, and via kqueue, a notification > facility to notify a program when swap is about to run > out, when a program has made a memory request which > requires more swap space than is avialable, and when > swap space is run out. There should also be commands > that can shrink the swap files, and see how much is > being used in the swap files. This allows for the user > to write customised programs that can manage and > allocate new swap space as needed. The OS can come > with a standard version of such a program that allows > a user to specify a maximum swap file size (including > infinite). > > I have also run into problems with making multiple > space files on the same disk, in trying to address > these swap exhaust problems, which caused thrashing. I > believe this happened to when the swap partition and a > swap file were on the same drive. Perhaps a way should > be looked at to have multiple swap partititions and > files on the same disk. That could also allow another > way for additional swap space to be allocated, but I > dont know if having the possibility of a large number > of swap files is less efficient than a dynamically > growing swap file. There should also be a feature to > see how much of the swap file is used. > > I would much rather have dynamically allocated and > deallocated swap space so I do not have large unused > swap space eating up the disk, than having to > predefine the swap size. > > Another idea I have is for setting the Do Not Fragment > flag on a per connection option for UDP connections, > and a per connection option to disable UDP checksum. > > The third idea is for more of a move to Linux and, SUS > , and POSIX source compatability in regards to > additional features supported by these systems. I > still in 6.0 run into some calls that are not > supported by FreeBSD that is a real headache. I ran > into this with posix_memalign in some software. > Although posix_memalign is more modern, If it would be > trivial to add support for linux specific valloc and > memalign why not do so as well, to maintain > compatability with older Linux software. It is better > to just make FreeBSD be as compatable and for stuff to > compile out of box, as possible than to haggle over > conditional ifdefs and changing lines of code in > software. > > thank you for your reading these suggestions, it is > greatly appreciated. > > > > ____________________________________________________________________________________ > Never miss a thing. Make Yahoo your home page. > http://www.yahoo.com/r/hs > _______________________________________________ > email@example.com mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > _______________________________________________ firstname.lastname@example.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"