UMA large allocations issues

2011-07-26 Thread Davide Italiano
It seems that today I've some good news. I've done some job. Before I tried stuffs userspace http://davit.altervista.org/malloc_new.c , then I improved my patch a bit http://davit.altervista.org/uma_large_allocations.patch ) So, the situation is follow. System starts (before it doesn't), but I've

Re: UMA large allocations issues

2011-07-24 Thread Davide Italiano
oh, sorry I noticed that there's a typo. In mtx_init(uma_mtx, Bitmap Lock, NULL, MTX_DEF); you should replace uma_mtx with bitmap_mtx. Davide ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To

Re: UMA large allocations issues

2011-07-23 Thread Alan Cox
On Fri, Jul 22, 2011 at 9:07 PM, Davide Italiano davide.itali...@gmail.comwrote: Hi. I'm a student and some time ago I started investigating a bit about the performance/fragmentation issue of large allocations within the UMA allocator. Benckmarks showed up that this problems of performances

UMA large allocations issues

2011-07-22 Thread Davide Italiano
Hi. I'm a student and some time ago I started investigating a bit about the performance/fragmentation issue of large allocations within the UMA allocator. Benckmarks showed up that this problems of performances are mainly related to the fact that every call to uma_large_malloc() results in a call