Jan Bernhardt <j.bernhardt_at_gmx.de> wrote on 08/12/2008 11:00:46 AM:
> hmmm... the checkout contains about 40 files. I suppose that doesn't
fall in
> the category "huge amounts of files". But you are right: the load on the
> client increases, after a short time the client is at 1.
>
> This is what the client does all the time:
>
> clyprae_at_sclyds002 [global]:/opt/calypso/clyprae/eds > truss -v all -p
27523
> recv(4, " a N j 8 X u r l w j 9 1".., 8192, 0) = 8192
> pollsys(0xFFBFA7D0, 1, 0xFFBFA758, 0x00000000) = 1
> fd=4 ev=POLLIN rev=POLLIN
> timeout: 3600.000000000 sec
> recv(4, " I 8 V e 1 6 1 x 8 U y 3".., 8192, 0) = 8192
> pollsys(0xFFBFA7D0, 1, 0xFFBFA758, 0x00000000) = 1
> fd=4 ev=POLLIN rev=POLLIN
> timeout: 3600.000000000 sec
> recv(4, " K e 8 g Y\n I 8 r f D o".., 8192, 0) = 8192
> pollsys(0xFFBFA7D0, 1, 0xFFBFA758, 0x00000000) = 1
> fd=4 ev=POLLIN rev=POLLIN
> timeout: 3600.000000000 sec
> recv(4, " u T Q n s S S / S C 8 r".., 8192, 0) = 8192
> pollsys(0xFFBFA7D0, 1, 0xFFBFA758, 0x00000000) = 1
> fd=4 ev=POLLIN rev=POLLIN
> timeout: 3600.000000000 sec
>
> With a quite low frequency - about 3 receives per second.
Do you see any iostat wait times on the client? I'm guessing
yes, since you said the load goes to 1...
Kevin R.
> kmradke_at_rockwellcollins.com wrote:
> > Jan Bernhardt <j.bernhardt_at_gmx.de> wrote on 08/12/2008 09:52:05 AM:
> >> thanks for your comments. Unfortunately the entropy is not the
culprit.
> > As for
> >> the per dir auth I don't think that this is a problem, since the
server
> > is not
> >> loaded and I suppose it would only show when accessing lots of
possibly
> > small
> >> files, which is not the case here.
> >
> > How loaded is the client machine?
> >
> > Particularly, check the disk I/O on the client. The current working
copy
> > code will do a
> > tremendous amount of I/O on the client for large working copies with
large
> > numbers of
> > files. When the client is doing I/O in the working copy, you will see
> > significant pauses
> > in the data sent between the client and server.
> > (Or at least this is what I have observed with 20G+ working copies...)
> >
> > Kevin R.
> >
> >
> >> Felix Gilcher wrote:
> >>>> -----Ursprüngliche Nachricht-----
> >>>> Von: Jan Bernhardt [mailto:j.bernhardt_at_gmx.de]
> >>>> Gesendet: Dienstag, 12. August 2008 16:22
> >>>> An: users_at_subversion.tigris.org
> >>>> Betreff: Checkout via http/webdav hangs
> >>>>
> >>>> Hi,
> >>>>
> >>>> I'm running SVN 1.4.2 via an Apache HTTPD 2.0.55 over webdav. This
is
> > on
> >>>> Solaris 10 SPARC.
> >>>>
> >>>> Some checkouts/updates seem to hang. The request in question
involve
> >>>> checking out a directory worth 350 MB. When I look at the Apache
> > worker
> >>>> handling my request I see that it accesses the revision in which
this
> >>>> directory was created:
> >>>>
> >>> [snipped out traces]
> >>>
> >>>> My interpretation is that the process does read the revision
> > continuesly
> >>>> and answers back to the client, but very slowly. Checking out via
> >>>> file:/// access does work.
> >>>>
> >>>> Any idea, what's going on here?
> >>>>
> >>> Wild guess, as you didn't mention it: Are you checking out via
https?
> > You
> >> might be running out of entropy. There have been reports of that
which
> > fit
> >> your description. If yes, you could check whether http does work
faster
> > for you.
> >>> Another option would be that you're using per-directory access
control
> > [1]
> >> which can create a big load on the server. You might want to disable
> > that at
> >> least for testing purposes [2].
> >>>> Thanks,
> >>>>
> >>>> - Jan.
> >>>>
> >>>>
> >>> Good luck
> >>>
> >>> felix
> >>>
> >>>
> >>> [1]
> >
http://svnbook.red-bean.com/nightly/de/svn.serverconfig.httpd.html#svn.
> >> serverconfig.httpd.authz.perdir
> >>> [2]
> >
http://svnbook.red-bean.com/nightly/de/svn.serverconfig.httpd.html#svn.
> >> serverconfig.httpd.authz.pathauthzoff
> >>> --
> >>> Felix Gilcher
> >>>
> >>> E-Mail: mailto:felix.gilcher_at_exozet.com
> >>> URL: http://www.exozet.com/
> >>>
> >>> Geschäftsführer: Frank Alexander Zahn
> >>> Handelsregisternummer: HRB 58797 Amtsgericht Charlottenburg
> >>
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> >>
> >
> >
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Received on 2008-08-12 18:19:54 CEST