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Posted to users@subversion.apache.org by Lukas Lipavsky <lu...@gmail.com> on 2004/12/01 19:56:26 UTC
Experience with FSFS
Hello,
I see a lot of problems with BerkeleyDB reported here.
But I would like to know...how stable and reliable is FSFS? Has anyone
tested it on some big real project?
Are there any other problems?
Any suggestions, comments, experiences?
Which type of repository is better (in your opinion) and why?
Thanks a lot
Lukas
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Re: Experience with FSFS
Posted by Eric Gillespie <ep...@pretzelnet.org>.
Eric Gillespie <ep...@pretzelnet.org> writes:
> Here are some numbers on our three main repositories, from
> 2004-10-01 to right now.
This could have been clearer. The point of these numbers is that
October 1 was our first day with all FSFS repositories, and we
have had zero problems in that time. So, yes, it's well-tested.
> The first repository was created brand new and empty (as bdb)
> in July and now has over 15,000 revisions. The second is
> largest in data size but isn't as active. The second two are
> older, cvs2svn-converted repositories.
>
> 6936 revisions consisting of:
> author count: 157
> node adds: 6852
> node mods: 20811
> node deletes: 1461
> revs per day: 110.095
> adds per day: 129.283
> mods per day: 330.333
> deletes per day: 31.0851
>
> 516 revisions consisting of:
> author count: 33
> node adds: 88
> node mods: 1499
> node deletes: 23
> revs per day: 8.74576
> adds per day: 2.58824
> mods per day: 25.4068
> deletes per day: 2.09091
>
> 506 revisions consisting of:
> author count: 33
> node adds: 7582
> node mods: 5338
> node deletes: 176
> revs per day: 8.43333
> adds per day: 236.938
> mods per day: 88.9667
> deletes per day: 9.77778
>
> --
> Eric Gillespie <*> epg@pretzelnet.org
>
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--
Eric Gillespie <*> epg@pretzelnet.org
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Re: Experience with FSFS
Posted by Eric Gillespie <ep...@pretzelnet.org>.
Nick_Gianakas@sybari.com writes:
> In all the FSFS benchmark discussion, I haven't seem many
> references to file systems.
Our setup is pretty simple. Repositories are stored on RAID
arrays with ffs. The operating system is FreeBSD 4.10.
--
Eric Gillespie <*> epg@pretzelnet.org
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Re: Experience with FSFS
Posted by Ni...@sybari.com.
In all the FSFS benchmark discussion, I haven't seem many references to
file systems.
Does anyone have any experience (or even better, benchmarks) w/ FSFS on
various file systems. Of particular interest to me is ext3, ReiserFS,
XFS, and JFS.
Regards,
Nick G
Eric Gillespie <ep...@pretzelnet.org>
Sent by: epg@gould.diplodocus.org
12/01/2004 05:46 PM
To: users@subversion.tigris.org
cc:
Subject: Re: Experience with FSFS
Lukas Lipavsky <lu...@gmail.com> writes:
> But I would like to know...how stable and reliable is FSFS? Has anyone
> tested it on some big real project?
Absolutely. We've been using it on a small repository since
before 1.1.0, and once 1.1.0 came out we switched all our
repositories. In those two months we've had zero problems.
Previously, we averaged a wedge every other week.
> Are there any other problems?
Theoretically, yes. See
<http://svn.collab.net/repos/svn/trunk/notes/fsfs>. In practice,
fsfs has been faster across the board and the load average has
noticeably decreased on our servers.
> Any suggestions, comments, experiences?
Switch :).
Here are some numbers on our three main repositories, from
2004-10-01 to right now. The first repository was created brand
new and empty (as bdb) in July and now has over 15,000 revisions.
The second is largest in data size but isn't as active. The
second two are older, cvs2svn-converted repositories.
6936 revisions consisting of:
author count: 157
node adds: 6852
node mods: 20811
node deletes: 1461
revs per day: 110.095
adds per day: 129.283
mods per day: 330.333
deletes per day: 31.0851
516 revisions consisting of:
author count: 33
node adds: 88
node mods: 1499
node deletes: 23
revs per day: 8.74576
adds per day: 2.58824
mods per day: 25.4068
deletes per day: 2.09091
506 revisions consisting of:
author count: 33
node adds: 7582
node mods: 5338
node deletes: 176
revs per day: 8.43333
adds per day: 236.938
mods per day: 88.9667
deletes per day: 9.77778
--
Eric Gillespie <*> epg@pretzelnet.org
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Re: Experience with FSFS
Posted by Eric Gillespie <ep...@pretzelnet.org>.
Lukas Lipavsky <lu...@gmail.com> writes:
> But I would like to know...how stable and reliable is FSFS? Has anyone
> tested it on some big real project?
Absolutely. We've been using it on a small repository since
before 1.1.0, and once 1.1.0 came out we switched all our
repositories. In those two months we've had zero problems.
Previously, we averaged a wedge every other week.
> Are there any other problems?
Theoretically, yes. See
<http://svn.collab.net/repos/svn/trunk/notes/fsfs>. In practice,
fsfs has been faster across the board and the load average has
noticeably decreased on our servers.
> Any suggestions, comments, experiences?
Switch :).
Here are some numbers on our three main repositories, from
2004-10-01 to right now. The first repository was created brand
new and empty (as bdb) in July and now has over 15,000 revisions.
The second is largest in data size but isn't as active. The
second two are older, cvs2svn-converted repositories.
6936 revisions consisting of:
author count: 157
node adds: 6852
node mods: 20811
node deletes: 1461
revs per day: 110.095
adds per day: 129.283
mods per day: 330.333
deletes per day: 31.0851
516 revisions consisting of:
author count: 33
node adds: 88
node mods: 1499
node deletes: 23
revs per day: 8.74576
adds per day: 2.58824
mods per day: 25.4068
deletes per day: 2.09091
506 revisions consisting of:
author count: 33
node adds: 7582
node mods: 5338
node deletes: 176
revs per day: 8.43333
adds per day: 236.938
mods per day: 88.9667
deletes per day: 9.77778
--
Eric Gillespie <*> epg@pretzelnet.org
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Re: Experience with FSFS
Posted by Michael W Thelen <mi...@pietdepsi.com>.
Nick_Gianakas@sybari.com wrote:
>>We have experienced significant performance increases with FSFS,
>>particularly when committing, diffing, merging... well, pretty much
>>across the board.
>
> What OS and file system?
It looks like our server is running Red Hat 7.1, with ext3. It's due
for an upgrade Real Soon Now :-) At that point we're considering
switching to ReiserFS since we have so many revision files in a single
directory. Actually, any advice anyone might have about which FS to use
for a large FSFS repository would be welcome!
--
Michael W Thelen
It is a mistake to think you can solve any major problems just with
potatoes. -- Douglas Adams
Re: Experience with FSFS
Posted by Ni...@sybari.com.
> We have experienced significant performance increases with FSFS,
> particularly when committing, diffing, merging... well, pretty much
> across the board.
What OS and file system?
Regards,
Nick G
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Re: Experience with FSFS
Posted by Michael W Thelen <mi...@pietdepsi.com>.
Lukas Lipavsky wrote:
> But I would like to know...how stable and reliable is FSFS? Has anyone
> tested it on some big real project?
My company has been using FSFS for about 6 weeks with no problems. We
had previously been using BDB, also with no major problems. Our
repository is quite large, about 36000 revisions and 2.5 GB.
> Any suggestions, comments, experiences?
>
> Which type of repository is better (in your opinion) and why?
We have experienced significant performance increases with FSFS,
particularly when committing, diffing, merging... well, pretty much
across the board. :-) I would recommend FSFS.
--
Michael W Thelen
It is a mistake to think you can solve any major problems just with
potatoes. -- Douglas Adams
Re: Experience with FSFS
Posted by anton <an...@nezzwerk.com>.
>
> unfortunately, i do not have any first-hand experience with fsfs, but i
> ran bdb on linux & solaris for over (but about to).
>
the above meant to be "i do not have any first-hand experience with fsfs
(but i am about to); i ran bdb-bsed repositories on linux & solaris for
over a year."
my apologies,
-a
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Re: Experience with FSFS
Posted by anton <an...@nezzwerk.com>.
Lukas Lipavsky wrote:
> Hello,
>
> I see a lot of problems with BerkeleyDB reported here.
>
> But I would like to know...how stable and reliable is FSFS? Has anyone
> tested it on some big real project?
>
> Are there any other problems?
>
> Any suggestions, comments, experiences?
>
> Which type of repository is better (in your opinion) and why?
>
> Thanks a lot
>
> Lukas
>
i assume you read
http://svnbook.red-bean.com/en/1.1/ch05.html#svn-ch-5-sect-1.2.A
as someone mentioned, the people complaining about bdb problems could me
just a very vocal minority, majority of the users never experience any
problems as long as they follow the guidelines
(http://svnbook.red-bean.com/en/1.1/ch05s02.html)
unfortunately, i do not have any first-hand experience with fsfs, but i
ran bdb on linux & solaris for over (but about to).
thanks,
-anton
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