Messages in this thread | | | Date | Tue, 13 Nov 2012 00:19:25 -0800 (PST) | From | David Rientjes <> | Subject | Re: [patch 3/7] fs, notify: Add file handle entry into inotify_inode_mark |
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On Tue, 13 Nov 2012, Cyrill Gorcunov wrote:
> > The question is, how many `struct inotify_inode_mark's are instantiated > > system-wide? Could be millions? > > Well, hard to tell, to be fair. On my testing machine only apache has been > using inotify system as far as I remember, but for sure nothing except memory > limit the number of inotify. But I think if one running machine with millions > of inotify it's rather powerful machine with enough memory. >
Seems easy to determine if you boot with slub_nomerge on the command line and then read /sys/kernel/slab/inotify_inode_mark/objects. On my system, that happens to be 210, but I'm sure you could come up with a realistic synthetic workload to make it much higher.
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