Date: Mon, 25 Jan 2021 09:09:05 -0300 From: luporl <luporl@freebsd.org> To: Jeanie <jeanie@jeaniez.com> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: SAS Raid controllers Message-ID: <CAC7XEcKKAVhiteV7jx2Xt73hKWmyXULZcwuFj9K5ow4P3zcAig@mail.gmail.com> In-Reply-To: <5bdeb808-57b5-e267-4f01-3e54e4250ef1@jeaniez.com> References: <fa203424-960f-c72c-367a-e4a101b8feb0@jeaniez.com> <e5775be21458401e5d664ffb25156681@bsdforge.com> <CAOpTx7Hi6REo=FF0uJTzoyoO4-=k_R=4zF%2B_Hj=2X1RJ7TCeAg@mail.gmail.com> <CAC7XEc%2BdzV2OTTn_aG7xp2tCWJrNZU5OYN-6WQRMGjos1f2vUg@mail.gmail.com> <5a2db57c-780c-8ba8-7076-9d044fa55c10@jeaniez.com> <CAC7XEcLHtMFDfOu=DipG--OCwP34y=CW5qr=7yKjW8A-OEG2xQ@mail.gmail.com> <5bdeb808-57b5-e267-4f01-3e54e4250ef1@jeaniez.com>
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On Fri, Jan 22, 2021 at 7:34 PM Jeanie <jeanie@jeaniez.com> wrote: > > > On 22/01/21 08:54, luporl wrote: > > On Thu, Jan 21, 2021 at 9:10 PM Jeanie <jeanie@jeaniez.com> wrote: > > > >> Hi Leandro, > >> > >> On 20/01/21 07:04, luporl wrote: > >>> On PowerPC64, the onboard Talos II SAS controller works fine too, using > >>> FreeBSD 13 aacraid driver: > >>> > >>> aacraid0: <Adaptec RAID Controller> mem > >>> 0x80000000-0x800fffff,0x80180000-0x801803ff irq 1038328 at device 0.0 > >>> numa-domain 0 on pci5 > >>> ... > >>> aacraid0: SmartIOC 8i, aacraid driver 3.2.10-1 > >>> > >>> - Leandro > >> Sorry for the delay. Someone deleted my emails. > >> > >> You are using a SAS raid with PowerPC!!!!! Was it hard to make work? I > >> am looking at the aacraid driver and it looks like add-on cards are > >> available. > >> > >> Sincerely, > >> Jeanie > >> > >> > > Hi Jeanie, > > > > For me, with a recent FreeBSD 13 kernel, it just works, as the aacraid > > driver is now included with the default PowerPC64 kernel. > > But I'm using it with only one SAS drive, so I haven't tested its raid > > capabilities. > > The only complaint that I have is that, on my machine, disk writes are > very > > slow. > > > > - Leandro > > _______________________________________________ > Hi Leandro, > > That was going to be my next question, what kernel you are using, but > since you already answered it, I guess that I won't need to ask. I will > update my source and give compiling a kernel a try. > > It is interesting that it is slow on writes. Maybe it is because you > only have one drive? Have you looked into this any further? > > Sincerely, > Jeanie > > Hi Jeanie, Even with one drive, the write speed should be higher. Write speed on the Talos II machine that I use, with aacraid, is about only 3 or 4 MB/s, while on another PowerPC machine with a SATA controller it reaches about 30 MB/s, during sequential write of a large file. This Talos II machine also has NVMe, that reaches about 130 MB/s. I've not looked further into this issue. However, some months ago, when the aacraid driver was ported to big endian, I've done some tests with it on another PowerPC machine and I didn't notice writes being slow. So, maybe this is an issue specific to my setup or maybe something in the code changed from a few months ago that has degraded write performance. Best regards, - Leandro
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