Re: How can btrfs take 23sec to stat 23K files from an SSD?
From: Martin Steigerwald <hidden>
Date: 2012-08-03 18:45:22
Am Donnerstag, 2. August 2012 schrieb Marc MERLIN:
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I'll try plugging this SSD in a totally different PC and see what happens. This may say if it's an AHCI/intel sata driver problem.Seems we will continue until someone starts to complain here. Maybe another list will be more approbiate? But then this thread has it all in one ;). Adding a CC with some introductory note might be approbiate. Its your problem, so you decide ;). I´d suggest the fio mailing list, there are other performance people how may want to chime in.Actually you know the lists and people involved more than me. I'd be happy if you added a Cc to another list you think is best, and we can move there.
I have no more ideas for the moment. I suggest you to try the fio mailing list at fio lalala vger.kernel.org. I currently have no ideas for other lists. I bet there is some block layer / libata / scsi list that might match. Just browse the lists from kernel.org and pick the one that sounds most suitable for me¹. Probably fsdevel but since the thing does not seem to be filesystem related beside some alignment effect (stripe in Ext4). Hmmm, probably linux-scsi, but look there first, whether block layer and libata related things are discussed there. I would start a new thread. Tell the problem, tell in summary what you have tried and the outcome of that was and ask for advice. Add a link to the original thread here. (It might be a good idea to have one more post here with a link to the new thread so that other curious people can follow there – in case there are any. Otherwise I would end it on this thread. The thread view already looks ridiculous in KMail here ;-) And put me on Cc ;). I´d really like to know whats going on here. As written I have no more ideas right now. It seems to be getting to low level for me. [1] http://vger.kernel.org/vger-lists.html Ciao, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7