On 4/26/05, Arjan van de Ven <arjanv redhat com> wrote: > On Tue, 2005-04-26 at 09:00 -0500, C Lance Moxley wrote: > > On 4/26/05, Celal UNALP <cunalp oyak com tr> wrote: > > > > > > Is there anyone running with IBM x236 server with onboard ADAPTEC HostRAID > > > configured RAID1? > > > > > > I downloaded HostRAID driver images (39m4736.zip) for RHELAS3U3 but > > > complaining about with RHELAS3U4. > > > > I have a few x206's and have come to the conclusion that it is a lot > > easier to do software RAID with Linux than to do "hardware" raid with > > IBM's drivers. From a performance standpoint it's basically a wash > > too. > > that surprises me; purely from a theoretical performance point of view > the linux layout is more optimal than the adaptec layout, and both are > equally software raid... Attached is an html file of some tests I ran last year right after I got one of these IBM servers. I'm not an I/O guy so to me it looks like each way has it's strengths and weaknesses. What do others think? Mudpuddle is the IBM driver and mudpuddle2 is Linux RAID. -- C Lance Moxley http://moxley.champaign.il.us:61821/Title: Bonnie++ V1.03 Benchmark results
| Sequential Output | Sequential Input | Random Seeks |
Sequential Create | Random Create | ||||||||||||||||||||||
| Size:Chunk Size | Per Char | Block | Rewrite | Per Char | Block | Num Files | Create | Read | Delete | Create | Read | Delete | ||||||||||||||
| K/sec | % CPU | K/sec | % CPU | K/sec | % CPU | K/sec | % CPU | K/sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | |||
| mudpuddle | 2G | 27652 | 87 | 46845 | 23 | 17359 | 7 | 20330 | 57 | 49628 | 11 | 324.0 | 1 | 16 | 2025 | 99 | +++++ | +++ | +++++ | +++ | 2117 | 99 | +++++ | +++ | 4646 | 100 |
| Sequential Output | Sequential Input | Random Seeks |
Sequential Create | Random Create | ||||||||||||||||||||||
| Size:Chunk Size | Per Char | Block | Rewrite | Per Char | Block | Num Files | Create | Read | Delete | Create | Read | Delete | ||||||||||||||
| K/sec | % CPU | K/sec | % CPU | K/sec | % CPU | K/sec | % CPU | K/sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | / sec | % CPU | |||
| mudpuddle2 | 2G | 24517 | 73 | 31746 | 15 | 14952 | 7 | 24859 | 70 | 40899 | 8 | 176.0 | 0 | 16 | 2045 | 98 | +++++ | +++ | +++++ | +++ | 2123 | 99 | +++++ | +++ | 4794 | 98 |