Messages in this thread | | | From | Andi Kleen <> | Subject | Re: Balancing near the locking cliff, with some numbers | Date | Tue, 15 Nov 2005 04:26:50 +0100 |
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Mr Linux,
On Monday 14 November 2005 13:03, linux@horizon.com wrote:
> This is very interesting data, thank you! > This is using the standard IDE driver? > And the path names were absolute?
Yes. No.
> > What would be really nice is a full trace of the locks acquired so we > can look for specific problems. (I can see the OpenSolaris folks puffing > up to crow about dtrace already.)
> Barring that, a few variants like hot-cache cases, different file systems > (includig tmpfs), and different device drivers would be informative. > (You could also try the different ext3 journalling modes.)
I have no plans to generate such data right now, but if you want to do it yourself I can send you my patches as a starting point. Should be easy enough using relayfs.
> I'm not sre quite how you did this, but assuming you just installed global > counters via macros
per process counters.
> and ran the test by booting with init=
from a normal shell in a running system
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