Re: subr_kmem

2012-07-22 Thread Lars Heidieker
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi Mindaugas, On 07/23/2012 12:55 AM, Mindaugas Rasiukevicius wrote: > Hello Lars, > > Lars Heidieker wrote: >> slight improvement on kmem(9): >> >> splitting the lookup table into two parts - this reduces the size >> of the lookup table -> touchin

Re: subr_kmem

2012-07-22 Thread Mindaugas Rasiukevicius
Hello Lars, Lars Heidieker wrote: > slight improvement on kmem(9): > > splitting the lookup table into two parts > - this reduces the size of the lookup table -> touching less cache-lines > (e.g. on 64bit down from 4096b to 1024b + 64b) Why do you think the split would result in touching fe

Re: full-disc partition (was: RAID on raw partitions)

2012-07-22 Thread Mouse
>> This is `raw' in that it bypasses partitioning allowing access to >> the whole disk regardless of partitioning. > It looks that I remember incorrectly what ws@ taught me back in the > days how the ``full disc'' partition works. > What I remember is that (let's assume sparc) partition ``c'' was

Re: src/sys/vfs

2012-07-22 Thread David Holland
On Tue, Jul 17, 2012 at 07:11:43PM +0100, Mindaugas Rasiukevicius wrote: > > If changes are incrememntal (which this one probably is), then there > > is no real problem applying each change to cvs separately - the system > > should still build after each. > > Heh. It is a bit more than "it s

Re: src/sys/vfs

2012-07-22 Thread David Holland
On Tue, Jul 17, 2012 at 06:00:34PM +, Taylor R Campbell wrote: >> Creating CVS branches does not help with this sort of thing; it just >> makes development slower. It also makes it less likely that the >> changes will get tested before the final branch merge, at which point >

Re: full-disc partition

2012-07-22 Thread Edgar Fuß
So to correct myself: > It looks that I remember incorrectly what ws@ taught me back in the days > how the ``full disc'' partition works. I just called him on the phone and the correct answer is that the code reading the disklabel enforces the ``full disc'' partition to be the full disc. Also that

Re: disklabel problems on 3TB disc

2012-07-22 Thread Edgar Fuß
> As to the question about how to replace a failed component with a > slightly smaller one, the answeris you don't. If you use 3TB disks as your > raid components, you'd better have 3TB disks as replacements. Yes, but for what precise value of ``3TB''? The ones I presently have are 58605331

full-disc partition (was: RAID on raw partitions)

2012-07-22 Thread Edgar Fuß
> There are two meanings of `raw' as applied to disk partitions. Ah, I see. Thanks. > This is `raw' in that it bypasses partitioning > allowing access to the whole disk regardless of partitioning. It looks that I remember incorrectly what ws@ taught me back in the days how the ``full disc'' partit