linux-kernel - Maximum number of inotify watches

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Message-ID: <bbaaf72bb3386008c77db2e16112b330@ceata.org>
Date:	Wed, 22 Jun 2011 15:59:20 +0300
From:	"Tiberiu C. Turbureanu" <tct@...ta.org>
To:	<linux-kernel@...r.kernel.org>
Subject: Maximum number of inotify watches

 Hello,

 I want to monitor all the files on a server using one instance of 
 inotify and about 20M watches recursively set on directories in '/' tree 
 substructure. I'd want to be notified about all type of events defined 
 by inotify (create, delete, access, modify etc.)

 Assuming this monitor daemon running in user-space keeps up with the 
 frequency of new events in the kernel queue (it reads them), is it 
 possible to exceed the kernel memory limit because there are too many 
 watches and events?

 TIA,
 Tibi
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