On Thu, 29 Mar 2012 07:04:26 +0300, Timo Sirainen wrote:
On 29.3.2012, at 5.07, Jeff Gustafson wrote:
That fixed some errors, but it still is having some sort of trouble
with that command:
# time doveadm -o mail=maildir:/home/bu/user.mdbox import -u
u...@domain.com
On 22.3.2012, at 23.25, Jeff Gustafson wrote:
[root@n24 bu]# time dsync backup -u testu...@domain.com \
mdbox:/home/bu/testuser
real1m9.519s
user1m7.592s
sys 0m1.126s
Most of the time is spent on usermode CPU code. I doubt the problem is dsync
itself, most likely the problem
On Thu, 2012-03-29 at 02:12 +0300, Timo Sirainen wrote:
On 22.3.2012, at 23.25, Jeff Gustafson wrote:
[root@n24 bu]# time dsync backup -u testu...@domain.com \
mdbox:/home/bu/testuser
real1m9.519s
user1m7.592s
sys 0m1.126s
Most of the time is spent on usermode CPU
On 29.3.2012, at 2.51, Jeff Gustafson wrote:
Most of the time is spent on usermode CPU code. I doubt the problem is dsync
itself, most likely the problem is mdbox's saving code. Or possibly
index/cache code. Try the same dsync backup for:
- mbox:/tmp/mbox
- mbox:/tmp/mbox:INDEX=MEMORY
-
On Thu, 2012-03-29 at 03:06 +0300, Timo Sirainen wrote:
time doveadm -o mail=mdbox:/tmp/mdbox import mdbox:/path/to/real/mdbox all
This tried to write to /root for some reason and failed (dovecot
2.1.3):
# time doveadm -o mail=maildir:/home/bu/test.mdbox import
On 29.3.2012, at 3.48, Jeff Gustafson wrote:
On Thu, 2012-03-29 at 03:06 +0300, Timo Sirainen wrote:
time doveadm -o mail=mdbox:/tmp/mdbox import mdbox:/path/to/real/mdbox all
This tried to write to /root for some reason and failed (dovecot
2.1.3):
# time doveadm -o
On Thu, 2012-03-29 at 04:07 +0300, Timo Sirainen wrote:
On 29.3.2012, at 3.48, Jeff Gustafson wrote:
On Thu, 2012-03-29 at 03:06 +0300, Timo Sirainen wrote:
time doveadm -o mail=mdbox:/tmp/mdbox import mdbox:/path/to/real/mdbox
all
This tried to write to /root for some
On 29.3.2012, at 5.07, Jeff Gustafson wrote:
That fixed some errors, but it still is having some sort of trouble
with that command:
# time doveadm -o mail=maildir:/home/bu/user.mdbox import -u
u...@domain.com maildir:/home/users/user%domain.com/Maildir/ all
doveadm(u...@domain.com):
On Fri, 2012-03-23 at 23:12 -0700, Linda Walsh wrote:
Next -- bench cp -ax, against rsync -axHAX when it has to copy 75% of
the data (cp ~6-8x speed). But for file speed, 'dd' is king, as it can
use large buffers (~16MB gives best results on my local Gbit network),
but it
misses all
On Sat, 2012-03-24 at 14:21 +0100, Maarten Bezemer wrote:
On Fri, 23 Mar 2012, Jeff Gustafson wrote:
That didn't seem to make much of a difference. On a 3.1GB backup it
shaved off 5 seconds. dsync's time was over 6 minutes with or without
the mail_fsync=never. rsync copied the same
On 24/03/2012 13:21, Maarten Bezemer wrote:
On Fri, 23 Mar 2012, Jeff Gustafson wrote:
That didn't seem to make much of a difference. On a 3.1GB backup it
shaved off 5 seconds. dsync's time was over 6 minutes with or without
the mail_fsync=never. rsync copied the same 3.1GB mailbox in 15
Jeff Gustafson wrote:
On Fri, 2012-03-23 at 19:02 +0100, Christoph Bußenius wrote:
Hi,
maybe try dsync -o mail_fsync=never.
That didn't seem to make much of a difference. On a 3.1GB backup it
shaved off 5 seconds. dsync's time was over 6 minutes with or without
the
On Fri, 23 Mar 2012, Jeff Gustafson wrote:
That didn't seem to make much of a difference. On a 3.1GB backup it
shaved off 5 seconds. dsync's time was over 6 minutes with or without
the mail_fsync=never. rsync copied the same 3.1GB mailbox in 15 seconds.
It seems to me that
Hi,
maybe try dsync -o mail_fsync=never.
Cheers,
Christoph
--
Christoph Bußenius
Rechnerbetriebsgruppe der Fakultäten Informatik und Mathematik
Technische Universität München
+49 89-289-18519 Raum 00.05.055 Boltzmannstr. 3 Garching
On Fri, 2012-03-23 at 19:02 +0100, Christoph Bußenius wrote:
Hi,
maybe try dsync -o mail_fsync=never.
That didn't seem to make much of a difference. On a 3.1GB backup it
shaved off 5 seconds. dsync's time was over 6 minutes with or without
the mail_fsync=never. rsync copied the same
Hi all,
We are currently using snapshots and rsync to backup a large
mail server to a backup mail server. I have been looking into using
dsync to replace rsync in hopes that it would make backups more
efficient. I decided to test the performance using a single mailbox.
Unfortunately dsync
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