Fwd: Re: Some svn numbers

[Gregory John Casamento]

All,

Apparently GCC is having some problems with SVN being terribly slow....  below
is a message from Mike Stump to the gcc list.

You may wish to go there and read the rest of the thread to see what issues SVN
is presenting to the GCC folks.

GJC

--- Mike Stump <mrs@apple.com> wrote:

> CC: GCC Development <gcc@gcc.gnu.org>
> From: Mike Stump <mrs@apple.com>
> Subject: Re: Some svn numbers
> Date: Wed, 12 Oct 2005 18:08:43 -0700
> To: Daniel Berlin <dberlin@dberlin.org>
> 
> On Oct 11, 2005, at 7:42 PM, Daniel Berlin wrote:
> > So, Mike Stump said his update times with svn from toolchain.org  
> > were a
> > little slow.
> 
> > Let me know if it's still slow for you.
> 
> Ok, had a chance to upgrade my svn to 1.2.3, and time from gcc.gnu.org:
> 
> $ cd gcc
> $ time svn update *.c
> [ lots o output that is annoying ]
> real    3m28.134s
> user    0m7.665s
> sys     0m5.403s
> 
>  From top:
> Networks:     16981 ipkts/2674K          10405 opkts /1370K
> Disks:          106 reads/781K             345 writes/4755K
> 
> $ time cvs update *.c
> real    0m1.329s
> user    0m0.452s
> sys     0m0.076s
> 
>  From top:
> Networks:       160 ipkts/43K               54 opkts /11K
> Disks:            0 reads/0K                 0 writes/0K
> VM:               0 pageins                  0 pageouts
> 
> svn is only 156x slower than cvs.  :-(  It used to be in the 500x  
> slower range (or so) with 1.1.3, so, great progress, but...  62x  
> worse on the network reads, 124x worse on network writes, infinitely  
> worse on the disk reads and writes.
> 
> Yes, I really do run updates this way on occasion, usually during the  
> last stages of a targeted reghunt, but, not often.  I don't see this  
> as a transition issue, just, my fingers will fat finger it from time  
> to time and they are gonna have to learn to not do that anymore.
> 
> Now, just so people understand the normal update command, here is  
> what I see:
> 
> mrs $ time cvs update
> real    0m16.373s
> user    0m0.715s
> sys     0m2.533s
> 
>  From top:
> Networks:       689 ipkts/133K             191 opkts /151K
> Disks:         3189 reads/13252K           834 writes/4130K
> 
> mrs $ time svn update
> real    0m4.833s
> user    0m0.577s
> sys     0m0.778s
>  From top:
> Networks:       176 ipkts/20K               35 opkts /7K
> Disks:            6 reads/48K              864 writes/12894K
> 
> All operations were hot nops.
> 



Gregory John Casamento 
-- CEO/President Open Logic Corp. (A MD Corp.)
## Maintainer of Gorm (IB Equiv.) for GNUstep.