Re: memory pool, rfc

In the last episode (Nov 01), Eduardo Morras said: > I have some free time and want to do an memory pool. The idea is to > have a memory zone of N KB (or several MB) compressed in memory. I > have fast compression algorithms now that can release under BSD > licence that are faster than hd i/o, so i

memory pool, rfc

Hello: I have some free time and want to do an memory pool. The idea is to have a memory zone of N KB (or several MB) compressed in memory. I have fast compression algorithms now that can release under BSD licence that are faster than hd i/o, so it take less compress/decompress a memory zo

floating point operations

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 hackers, We've been making experimental changes to FreeBSD's TCP congestion control code, and we used a few floating point operations initially in our prototype. We've since gone back and converted all but one of the operations to fixed point maths i

Re: amrd disk performance drop after running under high load

Alexey Popov wrote: Hi Kris Kennaway wrote: So I can conclude that FreeBSD has a long standing bug in VM that could be triggered when serving large amount of static data (much bigger than memory size) on high rates. Possibly this only applies to large files like mp3 or video. It is possible

RE: ``Stopping RAM access''

Well, if the system stops accessing RAM, you had better make sure that *all* the instructions you need are already loaded into the L1 and L2 caches. Otherwise you won't be able to turn RAM back on. That would involve carefully preloading everything through use of the system's appropriate PREFETC

Re: ``Stopping RAM access''

>> Can anyone give me a clue, how one can ``stop'' system from accessing RAM, and then allow it again? > > I think this has no aim, RAM tests should be done during booting, but > u could try to disable interrupts while in kernel mode 'cli' which > will prevent any further context switching, then tr

Re: amrd disk performance drop after running under high load

Hi Kris Kennaway wrote: So I can conclude that FreeBSD has a long standing bug in VM that could be triggered when serving large amount of static data (much bigger than memory size) on high rates. Possibly this only applies to large files like mp3 or video. It is possible, we have further wor

Re: boot loader

> You also can't dual boot without console access. You can, I have a system triple booting without using the console. Method 1: boot through grub. Create shell scripts that edit grub's menu.lst file. Method 2: use fdisk(8) to change active partition. With or without dual booting, if the least