On Tuesday 05 August 2008 17:39:11 Lin Jui-Nan Eric wrote: > Recently we found that we can only allocate 32GB for one swap slice. > Does there is any sysctl oid or any kernel option to increase it? Why > we have this restriction?
this is a consequence of the data structure used to manage swap space. See sys/blist.h for details. It *seems* that you *might* be able to increase the coverage by decreasing BLIST_META_RADIX, but that's from a quick glance and most certainly not a good idea. However, the blist is a abstract enough API so that you can likely replace it with something that supports 64bit addresses (and thus 512*2^64 bytes of swap space per device) ... but I don't see why you'd want to do something like this. Remember that you need memory to manage your swap space as well! -- /"\ Best regards, | [EMAIL PROTECTED] \ / Max Laier | ICQ #67774661 X http://pf4freebsd.love2party.net/ | [EMAIL PROTECTED] / \ ASCII Ribbon Campaign | Against HTML Mail and News _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"
