Hi all,
I'm trying to give my users an access to their home directory over the
Internet, so they can connect to there account from their homes (place, not
directory...).
Unfortunately, my tests show that when a large update occurs to the disk (for
example, the user download a file and puts it in any directory, or makes a copy
from USB to home dir), the connection always becomes terribly slow
(ping>1000ms), and any other request takes ages to return (thus, if the user
uses firefox for example, since it makes quite a lot of disk access to the
".mozilla" directory, its interface freezes until the update if over and ping
becomes normal again, i.e 60ms)
I managed to optimize this by setting a chunksize of 8kb (smaller seems to
fail, because my cache is between about 500Mo-2Go, and that makes too many
files for the cachemanager I think), and by adding an "fs st -allfiles 20000"
in afs.conf like this:
afs_server_prefs() { fs storebehind -allfiles 20000 }
It is slighly better with these settings : I still get ping >1000ms, but less
often...
Is there any ways to enhance this again, or should I set some QoS on the system
to prevent afs daemon to send to many packets at the same time (a solution that
I'd rather avoid, since I'll not have full control over the client's
systems...)?
Tanks a lot for your advices!
Frédéric.
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