Messages in this thread | | | From | Kyle Moffett <> | Subject | Re: RFC: i386: kill !4KSTACKS | Date | Mon, 5 Sep 2005 19:06:58 -0400 |
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On Sep 5, 2005, at 18:32:32, Thorild Selen wrote: > Adrian Bunk <bunk@stusta.de> writes: >> Please name situations where 8K stacks may be preferred that do not >> involve binary-only modules. > > How about NFS-exporting a filesystem on LVM atop md? I believe it has > been mentioned before in discussions that 8k stacks are strongly > recommended in this case. Are those issues solved?
I think the worst overflow case anyone found was nfs=>xfs=>lvm=>dm=>scsi, if someone has such a configuration, please retest with current -mm or similar. I think there are several patches in there to resolve the excessive stack usage and a few to do some sort of bio chaining (Instead of recursive calls). I don't remember what underlying hardware was behind the SCSI, but I suspect something like iSCSI or USB would push some extra stack in there for stress testing.
Cheers, Kyle Moffett
-- I have yet to see any problem, however complicated, which, when you looked at it in the right way, did not become still more complicated. -- Poul Anderson
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