From mboxrd@z Thu Jan  1 00:00:00 1970
From: Hans Reiser <reiser@namesys.com>
Subject: Re: data-logging time comparison
Date: Fri, 02 Aug 2002 22:34:06 +0400
Message-ID: <3D4AD09E.8070409@namesys.com>
References: <3D49C32C.8010404@mb.tu-ilmenau.de> <3D4AD035.7080902@mb.tu-ilmenau.de>
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To: Manuel Krause <manuel.krause@mb.tu-ilmenau.de>
Cc: Chris Mason <mason@suse.com>, reiserfs-list <reiserfs-list@namesys.com>

These results suggest that data=ordered should indeed be the default. 
 Good job Chris!

Hans

Manuel Krause wrote:

> On 08/02/2002 01:24 AM, Manuel Krause wrote:
>
>> Hi!
>>
>> Maybe you are interested in my recent backup time comparison. I 
>> simply copied the partitions with "cp -ax /.../a/. /.../b/" where 
>> "/.../b/" is a freshly created reiserfs. I hope the comparison is 
>> readable and makes sense for someone.
>>
>
> O.k.
>
> I made a new comparison with just the data-logging patch replaced by 
> the new -24, and now, only using fresh filesystems. I added the 
> related lines from tonight to show the improvement.
>
> File size distribution statistics are available via email upon request 
> (131kB as .tar.gz).
>
> Best wishes,
>
> Manuel
>
>
> partition 1: /dev/hdd7   2722896   1925876    797020  71% /mnt/alpha
>  (is my / filesystem)
>
> new FS noatime,notail,data=writeback
>  real  3m11.881s  user  0m1.600s  sys  0m49.040s   ~9,802MB/s  =100%
> new FS noatime,notail,data=ordered
>  real  3m19.895s  user  0m1.400s  sys  0m49.890s   ~9,409MB/s    96%
> new FS noatime,notail,data=journal
>  real  6m48.534s  user  0m1.570s  sys  1m0.830s    ~4,604MB/s    47%
> new FS noatime,notail "data-logging-23"
>  (real  3m18.826s user  0m1.310s  sys  0m49.710s)  ~9,478MB/s    97%
> new FS noatime,notail,data=ordered "data-logging-23"
>  (real  4m6.866s  user  0m1.620s  sys  0m50.120s)  ~7,633MB/s    78%
>
>
>
> partition 2: /dev/hdd11  5550248   4490128   1060120  81% /mnt/alpha
>  (is my software "repository")
>
> new FS noatime,notail,data=writeback
>  real  8m46.739s  user  0m1.430s sys   1m32.110s   ~8,325MB/s  =100%
> new FS noatime,notail,data=ordered
>  real  8m56.040s  user  0m1.410s  sys  1m27.920s   ~8,180MB/s    98%
> new FS noatime,notail,data=journal
>  real 18m36.456s  user  0m1.750s  sys  1m58.480s   ~3,928MB/s    47%
> new FS noatime,notail partition 86% full, "data-logging-23"
>  (real  9m20.956s user  0m1.680s  sys  1m39.190s)  ~8,248MB/s    99%
> new FS noatime,notail,data=ordered part. 86% full, "data-logging-23"
>  (real 11m54.513s user  0m1.910s  sys  1m38.460s)  ~6,476MB/s    78%
>
>
>


-- 
Hans