Issue 5 in tsumufs: Tsumufs Performance.
codesite...@google.com
Owner: ----
New issue 5 by megabast: Tsumufs Performance.
http://code.google.com/p/tsumufs/issues/detail?id=5
Hello everyone,
I'have analysed Tsumufs performance on disconnected mode. It seems that
fuse slows down tsumufs application. For example, if I copy a file with a
size of 17Mo then the return of time command is this:
real 0m18.541s
user 0m0.003s
sys 0m0.070s
In fact, when fuse write on files, it works with blocks of only 4096 bytes,
hence we have many context switches.
I'have used your decorator from metrics.py and I got those results:
write: [4125, 13.473435640335083]
There is a fuse option called direct_io which optimizes number of write.
here are the results with this option:
real 0m15.568s
user 0m0.009s
sys 0m0.044s
write: [2063, 7.5717041492462158]
Debug fuse option displays that fuse works now with blocks of 8192 bytes.
I 'm actually working to extend this value. If you have any idea I would be
interseting.
See you, Bastien
--
You received this message because you are listed in the owner
or CC fields of this issue, or because you starred this issue.
You may adjust your issue notification preferences at:
http://code.google.com/hosting/settings