Re: [arch-general] mdadm: RAID-5 performance sucks

2013-04-10 Thread Rafa Griman
Hi :) On Wed, Apr 10, 2013 at 2:18 PM, Karol Babioch wrote: > Hi, > > I guess I was too vague with some of the details regarding the setup, so > I will try to be more specific now. > > Am 09.04.2013 18:20, schrieb Chris Down: >> I assume you're using Linux software RAID > > Yes. > >> I've experie

Re: [arch-general] mdadm: RAID-5 performance sucks

2013-04-10 Thread Karol Babioch
Hi, I guess I was too vague with some of the details regarding the setup, so I will try to be more specific now. Am 09.04.2013 18:20, schrieb Chris Down: > I assume you're using Linux software RAID Yes. > I've experienced this when using RAID6 and a suboptimal stripe cache > size. I already ha

Re: [arch-general] mdadm: RAID-5 performance sucks

2013-04-09 Thread Rafa Griman
Hi :) On Tue, Apr 9, 2013 at 6:16 PM, Karol Babioch wrote: > Hi, > > I've got four HDDs and added them into a RAID-5 array, which basically > works just fine. However the performance sucks quite hard. I get only > about 70 MB/s when it comes down to reading and writing speeds of about > 35 MB/s.

Re: [arch-general] mdadm: RAID-5 performance sucks

2013-04-09 Thread Chris Down
On 10 April 2013 00:16, Karol Babioch wrote: > Hi, > > I've got four HDDs and added them into a RAID-5 array, which basically > works just fine. However the performance sucks quite hard. I get only > about 70 MB/s when it comes down to reading and writing speeds of about > 35 MB/s. > > The hardwa