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Re: Copy slower than rsync Re: Bugs and features
From: |
Ted Zlatanov |
Subject: |
Re: Copy slower than rsync Re: Bugs and features |
Date: |
Fri, 08 Nov 2002 09:51:20 -0500 |
User-agent: |
Gnus/5.090008 (Oort Gnus v0.08) Emacs/21.2 (sparc-sun-solaris2.8) |
On Fri, 8 Nov 2002, mark@daneel.iu.hio.no wrote:
> I looked at this a while back and there are several issues
>
> * seem to be version differences with rsync and cfengine
>
> * cfengine spreads things out over time (low CPU, slower total time)
> rsync (high CPU, short total time). Thus with multiple connections
> one would expect cfengine to survive/scale longer than rsync.
>
> * rsync trusts everything and caches like mad to go fast.
>
> * cfengine trusts very little and does lots of checks. (In my
> opinion this is the correct approach, since speed is rarely of the
> essence in system admin).
Speaking as a sysadmin, speed is often of the essence :) An extra
minute for a file copy can be very important. In one particular
instance, I observed the Solaris cron daemon crash sometimes when a
cron job took more than 1 minute. I can also think of implications
for high-availability environments.
Perhaps the cfengine copy could have an option to eliminate the
internal checks, use all the available CPU, and cache as much as
possible?
Ted
- Copy slower than rsync Re: Bugs and features, Adrian Phillips, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Mark Burgess, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Adrian Phillips, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Mark Burgess, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Nate Campi, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Adrian Phillips, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Nate Campi, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Mark . Burgess, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Adrian Phillips, 2002/11/08
- Re: Copy slower than rsync Re: Bugs and features, Mark . Burgess, 2002/11/08
Re: Copy slower than rsync Re: Bugs and features,
Ted Zlatanov <=