Re: 100% spinning CPU when uploading (maybe over ftps?)

On Tue, Apr 16, 2013 at 1:08 PM, Charlie Allom <[email protected]> wrote:

> "solved".
>
> On Thu, Mar 28, 2013 at 03:09:32PM +0000, Charlie Allom <
> [email protected]> wrote:
> >
> > We see some of our batch lftp processes spinning and we're not sure
> > why/when. We don't yet know if it's FTPS only.
> >
>
> We tuned our tcp buffers to be less aggressive and this issue went away.
>
> These values are working for us:
>
> net.ipv4.tcp_rmem=4096 87380 62500000
> net.ipv4.tcp_wmem=4096 16384 62500000
>

I also experience 100% CPU load during upload. However, I'm using plain
ftp, this is my config file:

open ftp://myuser:[email protected]
mirror --continue --reverse --verbose=3 --delete
/Backup/.obnam_repository_encfs /Backup/.obnam_repository_encfs
close
exit

I don't understand the proposed workaround and I before applying it, I'd
like to know what side effects should I expect if I tune my system that
way. Can you please help me with this?

I saw one bug report similar to this, but it is marked as solved:
https://github.com/lavv17/lftp/issues/39
Should I comment on that with my problem or open a new one?

I'm using lftp 4.6.1.

Thanks in advance for your help.

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