Re: Something similar to Soekris boards, for server applications
Greetings Sime, How many of these boards are you considering? There are some wicked-dense low-power cpu cluster solutions out there... Chris On 30Nov2011, at 08.27, Sime Ramov wrote: Hello, I am looking for something in the spirit of Soekris boards, but more suited for server applications, e.g. for hosting Django apps. Current net6501 is maxed out at 2 GB of RAM and 1.6 Ghz *single-core* (two threads) atom. The reason I am considering Soekris is because dedicated servers are often underused and idling. Few GB of memory, anemic processor and SSD gets one a surprisingly long way, especially with properly chosen stack and caching. So the general idea is: one Django app = one Soekris board. This is much better than virtualization (bare metal forever) or putting more apps on a big server. Some apps would run great on this, but a more powerful CPU and more memory would be needed for more demanding workloads. Any recommendations for similar, but a bit more powerful and versatile hardware (think one app = one hardware device)? Thanks. -- f f /g ? Check my PGP key here: https://www.asgaard.org/~cdl/cdl.asc Current vCard here: https://www.asgaard.org/~cdl/cdl.vcf [demime 1.01d removed an attachment of type application/pgp-signature which had a name of signature.asc]
Re: mSATA failure on 6501 w/ OpenBSD 5.0
Greetings guys, I'm the original reporter, comments in line... One other comment, when I got back to the console and rebooted, the entire drive was scrodded. I haven't seen an fsck like that in quite some time. Unable to really come up as an operational system. Basically re-pxe'd boot.rd and re-installled. I scribbled over the drive before the install without any issues. The drive checked. On 29Nov2011, at 04.10, Remco wrote: Chris Cappuccio wrote: here is the key error message. it means your whole ahci disk has disappeared (and anything you can still run is happening from cache.) -- ahci0: stopping the port, softreset slot 31 was still active. ahci0: failed to reset port during timeout handling, disabling it -- likely a reboot will fix it. this is a known problem with ahci driver and intel ahci controllers. I am not so sure this is a driver problem. I think I accidentilly emulated this problem the other day on my desktop system (not a 6501): Nov 28 16:38:44 ws0001 /bsd: ahci1: stopping the port, softreset slot 31 was still active. Nov 28 16:38:44 ws0001 /bsd: ahci1: failed to reset port during timeout handling, disabling it I have this external drive bay connected through e-SATA. After unmounting the drive I switched off the external drive's power. Running disklabel on the drive resulted in the above failures, which I guess makes sense, after all, I made the drive disappear. The drive is a transcend 16 GB mSATA that's installed on the motherboard - not really some way for it to go away the failed to reset port and softreset slot was still active problems become really obvious once you start maxing out disks on an ahci controller with a softraid array. they rarely present problems in normal use! but, the SSD sata drive may evoke different behavior for some reason. i think continuous runs of iogen over a RAID1 array might bring out similar issues all by itself, even with regular hard disks Maxing out disks sounds like having more activity on the disks, possibly making them draw more power. Could these errors relate to bad power cabling or insufficient power supply ? If multiple disks with an insufficiently powered system are the problem, one solution might be a power supply that can deliver more power, another possible solution might be using external drive bays, each having their own power supply. For stuff purely SSD related, a motherboard BIOS update and/or SSD firmware update may help as well. The power supply is running about 40% of max rated - and the drive is SSD a small SSD, so I don't think that it could be the power supply. Current BIOS on the 6501 (an update is coming, but current for right now). SSD is brand new, and has the latest transcend firmware (as far as I can tell). Chris -- f f /g ? Check my PGP key here: https://www.asgaard.org/~cdl/cdl.asc Current vCard here: https://www.asgaard.org/~cdl/cdl.vcf
Re: [Soekris] Fwd: mSATA failure on 6501 w/ OpenBSD 5.0
Greetings, Any thoughts as to how to get around this - it's only been up for a few days. Rebooting my home router every 24 hours is not spouse endearing behavior :) Chris On 28Nov2011, at 14.30, Chris Cappuccio wrote: here is the key error message. it means your whole ahci disk has disappeared (and anything you can still run is happening from cache.) -- ahci0: stopping the port, softreset slot 31 was still active. ahci0: failed to reset port during timeout handling, disabling it -- likely a reboot will fix it. this is a known problem with ahci driver and intel ahci controllers. the failed to reset port and softreset slot was still active problems become really obvious once you start maxing out disks on an ahci controller with a softraid array. they rarely present problems in normal use! but, the SSD sata drive may evoke different behavior for some reason. i think continuous runs of iogen over a RAID1 array might bring out similar issues all by itself, even with regular hard disks dragonflybsd's port of openbsd's ahci driver has incorporated several of workarounds for problems directly related to this. (reset this when that happens, etc..) that might be a good place to start looking, if you can easily reproduce the problem then you would know quickly when a ported fix from their driver has helped. -- f f /g ? Check my PGP key here: https://www.asgaard.org/~cdl/cdl.asc Current vCard here: https://www.asgaard.org/~cdl/cdl.vcf
