[svn.haxx.se] · SVN Dev · SVN Users · SVN Org · TSVN Dev · TSVN Users · Subclipse Dev · Subclipse Users · this month's index

Re: Expected speed of commit over HTTP?

From: Jacek Materna <jacek_at_assembla.com>
Date: Thu, 6 Jul 2017 14:07:26 +0200

We've say 2-3x speed decrease using HTTP vs SSH in our cloud. With SSH and
some tuning we are getting close to the IO rate on the end server of any
size. HTTP/mod_dav and RTT is usually the culprit in our cases, on a LAN
that issues collapses. Likely server side processing of the delta's?

-jacek

On Thu, Jul 6, 2017 at 1:54 PM, Paul Hammant <paul_at_hammant.org> wrote:

> For something that's 500MB in size (random binary data) I'm experiencing
> commits taking
> 10x longer than a straight copy to the drive the Svn repo is on.
>
> Both timings are on the same Ubuntu 17.04 machine, with the boot drive
> being the starting position of the 512MB file and a USB3 mounted 4TB
> seagate hard drive being the destination.
>
> My goal is to fill the 4TB drive with commits for the simple experience of
> that.
>
> How many places in the Apache2 --> mod_dav --> mod_dav_svn handoff does
> the 512MB temporarily manifest itself in a file system on the way to its
> ultimate destination? Is 1/10th speed the expectation? Sure, I get that
> 7bit/8bit shenanigans are a factor, but not that much right?
>
> - Paul
>
>

-- 
Jacek Materna
CTO
Assembla
+1 210 410 7661
+48 578 296 708
Received on 2017-07-06 14:08:11 CEST

This is an archived mail posted to the Subversion Dev mailing list.