FC2: vsftpd poor multiple file transfer performance

[Jay Lee]

Rainer Traut said:
> Hi,
> there seems to be a problem here with vsftpd
> in LAN with concurrent file tranfers from my FC2 (all updates applied)
> box.
>
> I try to download two iso images at the same time from FC2 to a windows
> box.
> When dling only one image at the same time, speed is ok, around 10MB/s.
> But when doing two transfers parallel, I get 2MB/s.
>
> Both PCs can handle the speed easyly, one is an athlon XP2000, one
> XP1400, 1GB Ram each.
>
> My assumption (I see harddisk light on FC2 always on):
> Network/cabling is alright, because single dl is ok.
> Maybe the FC2 pc seems to readahead too much so it cannot keep up with
> the upload rate?
> Any ideas?

I've found that the default options result in extremely poor performance
when uploading/downloading multiple files quickly.  Try editing
/etc/vsftpd/vsftpd.conf and changing these lines:

xferlog_enable=NO

then do a "/etc/init.d/vsftpd restart".  After this change, uploading lots
of small files worked a *lot* faster.

Jay
-- 
Jay Lee
Network / Systems Administrator
Information Technology Dept.
Philadelphia Biblical University
--
To make a bad day worse, spend it wishing for the impossible  --Calvin