id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	launchpad_bug
1264	Performance regression for large values of K	francois	francois	"On the grid described [http://tahoe-lafs.org/pipermail/tahoe-dev/2010-November/005597.html here], the download time of a 10 MB file encoded with 20-of-60 is roughly doubled on a client running v1.8.1 than the same client running v.1.7.1.


'''allmydata-tahoe: 1.8.0-r4843'''

{{{
$ for i in $(seq 1 5); do /usr/bin/time -f ""%e"" tahoe get tahoe:10MB.bin.20-of-60 > /dev/null; done
40.16
44.87
43.57
51.88
58.40
}}}

'''allmydata-tahoe: 1.8.0c4-r4743'''

{{{
$ for i in $(seq 1 5); do /usr/bin/time -f ""%e"" tahoe get tahoe:10MB.bin.20-of-60 > /dev/null; done
38.29
39.58
55.32
41.03
45.36
}}}

'''allmydata-tahoe: 1.7.0-r4579'''

{{{
$ for i in $(seq 1 5); do /usr/bin/time -f ""%e"" tahoe get tahoe:10MB.bin.20-of-60 > /dev/null; done
15.43
21.87
26.77
25.60
20.71
repairer:~# 
}}}"	defect	new	major	soon	code-network	1.8.0		performance regression download