linux: inotify + max_user_watches


atte

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Hi

I stumbled across these posts today:

http://askubuntu.com...ax-user-watches

http://paulphilippov...filesystem.html

http://blog.foogaro....ng-problem.html

Basically: as default most (my) linux systems are limited as to the number of "watches in inotify", one of my boxes had it set to 8192.

To find out your current setting:


cat /proc/sys/fs/inotify/max_user_watches

To change to something big:


sudo echo 1000000 >> /etc/sysctl.conf

All this is fine. My question, however, is: how does all this affect the way btsync runs? From reading about the lack of instant sync on BSD, it seems btsync relies on inotify to keep track of local changes that should be synced to connected boxes, so I guess it should have some impact...

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I'm pretty sure this is wrong:


sudo echo 1000000 >> /etc/sysctl.conf

You're just inserting a number in there but it needs to be attached to max_user_watches...

Follow-up question: is btsync really using inotify? In that case I guess I need to know more about it since I use inotify for another tool on my server too and that uses most of my user_watches.

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