Messages in this thread | | | Date | Mon, 17 Oct 2005 21:59:30 +0530 | From | Dipankar Sarma <> | Subject | Re: VFS: file-max limit 50044 reached |
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On Mon, Oct 17, 2005 at 09:16:25AM -0700, Linus Torvalds wrote: > > > Absolutely. Keeping a count of (percpu) queued items is basically free if kept > > in the cache line used by list head, so the 'queue length on this cpu' is a > > cheap metric. > > The only downside to TIF_RCUUPDATE is that those damn TIF-flags are > per-architecture (probably largely unnecessary, but while most > architectures don't care at all, others seem to have optimized their > layout so that they can test the work bits more efficiently). So it's a > matter of each architecture being updated with its TIF_xyz flag and their > work function. > > Anybody willing to try? Dipankar apparently has a lot on his plate, this > _should_ be fairly straightforward. Eric?
I *had*, when this hit me :) It was one those spurt things. I am going to look at this, but I think we will need to do this with some careful benchmarking.
At the moment however I do have another concern - open/close taking too much time as I mentioned in an earlier email. It is nearly 4 times slower than 2.6.13. So, that is first up in my list of things to do at the moment.
Thanks Dipankar - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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