How many files and directories does your lsyncd handle well?
Sven Hartrumpf
I have got the impression that inotify can be seen as a bottleneck of lsyncd.
(Please correct me if I am wrong.)
So, what is your experience?
How many files and directories can you handle with lsyncd?
For example:
Is 1 TB in 5-10 million files with 1%-10% change per month (over Gb Ethernet) ok?
Greetings
Sven
Axel Kittenberger
Lsyncd adds one inotify watch per directory, so its the amount of
directories matter than the amount of files. The Linux kernel uses 540
bytes or 1kB on 64bit unswapable kernel memory for every watch. Thats
the main bottle neck in matter of size of the watched tree. So
multiply that with the amount of directories. I cannot say exactly how
much user memory each watch takes in Lsyncd itself, it depends on the
path sizes.
Otherwise its hard to say a magic number, it depends on your configuration.
Kind regards, Axel
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Sven Hartrumpf
I asked some weeks ago:
> How many files and directories can you handle with lsyncd?
> Is 1 TB in 5-10 million files with 1%-10% change per month (over Gb Ethernet)
> ok?
I am running now such a setup (but without Ethernet involved, since SOURCE and
TARGET are on the same computer, currently) with lsyncd 2.0.2 as packaged
for openSUSE 11.2.
lsyncd uses around 1000 inotify's, and it works perfectly!
I am impressed. Thanks for this tool and the help, Axel.
How can we contribute documentation extensions/fixes for the manual in the wiki?
Greetings
Sven
Axel Kittenberger
> I am impressed. Thanks for this tool and the help, Axel.
Thank you.
> How can we contribute documentation extensions/fixes for the manual in the wiki?
I added you (hart...@gmail.com) to the editors list, you can click
edit in the wiki. Please feel brave to do whatever you think improves
the documentation.
Kind regards,
Axel