Displaying 20 results from an estimated 2000 matches similar to: "Re: ocfs performance question"
2008 Mar 28
1
bwlimit on rsync locally
Does "bwlimit" option really work on rsync locally? We have one type
of harddisk and want to slow down rsync I/O on disk because I don't
want the disk head gets too hot. While I'm trying to use --bwlimit
option, it looks the rsync speed was slowed down, but iostat is not
improved at all. In both case the block written speed is increased by
the same amount.
How could I really
2007 Oct 18
1
Vista performance (uggh)
Issue: Vista reads slowly from a samba server. This appears to pop up
periodically here and elsewhere.
My samba.conf file has:
[homes]
...
vfs objects = readahead
As suggested elsewhere.
Writes are approximately 17-18MB/s which is acceptable. Reads are in
the 8MB/s range which is appalingly slow. Using linux smbclient and
windows XP clients I can read at 25+MB/s. I've enabled vfs
2009 Oct 20
1
ocfs2 - problem with performance
Hi all.
I have problem with performance ocfs2. I just instaled ocfs2 1.4.1 in 2 nodes cluster. I use ocfs2 in mail server. This system has large amount of small files about 50kB.
Ocfs2 is formated:
>> mkfs.ocfs2 -T mail -N 2 /dev/sdb1
mkfs.ocfs2 1.4.1
Cluster stack: classic o2cb
Overwriting existing ocfs2 partition.
Proceed (y/N): y
Filesystem Type of mail
Filesystem label=
2009 Sep 21
2
Question about iostat output
Hello,
We are planning to moving most of our servers to ESX but before buying
our SAN, we want to do some I/O stats to see if iSCSI is enough or if
we have to go with FC. So I found a plugin for Nagios that can log I/O
stats with iostat. So far it's fine with single disk/one partition
servers, but on our Oracle Database 10g server, we have two drives in
RAID 1 (/dev/sda) and 4 other
2008 Mar 29
1
Help in troubleshoot cause of high kernel activity
Hi, I had been experiencing a problem on our dedicated server running Centos
5, and unable to successfully track down the problem.
Since about 6 days ago, I noticed a spike in load/CPU utilization which went
from a typical 0.2x-0.3x to 3.x. At the same time, average traffic also went
up and so did the log usage. Prior to this, the server was working fine and
there had been no changes to the
2002 Sep 24
3
Samba performance issues
Hi all
We are implementing samba-ldap to act as an nt pdc and are seeing
performance problems.
We have a 1ghz, 3gb Ram, 36gb box that is running samba-2.2.5 and
openldap-2.0.23 under redhat 7.3 with kernel 2.4.18-3.
Clients are all Win2k SP3.
All the ldap requests are to the localhost interface.
The box is acting as the PDC for the domain, and also sharing diskspace
and printers.
When we get
2017 Feb 10
1
dovecot config for 1500 simultaneous connection
----- Original Message -----
From: Christian Balzer [mailto:chibi at gol.com]
To: dovecot at dovecot.org
Cc: 24x7server at 24x7server.net
Sent: Fri, 10 Feb 2017 17:58:58 +0900
Subject:
On Fri, 10 Feb 2017 01:13:20 +0530 Rajesh M wrote:
> hello
>
> could somebody with experience let me know the dovecot config file settings to handle around 1500 simultaneous connections over pop3 and
2004 Mar 30
1
OCFS install trouble w/ new kernel - unresolved symbols
I successfully have OCFS running in a two-node RAC environment using RHAS
3 (2.4.21-4.EL) using Qlogic 2310 cards. IO performance, however, was
terrible with the combination of OCFS and the Qlogic cards. After
extensive testing, OCFS did fine on its own, as did the fibre cards. Put
the two together, and everything literally ran twice as slow.
Support at Qlogic pointed me to
2003 Nov 13
2
Disappointing Performance Using 9i RAC with OCFS on Linux
Wim,
Thanks for your prompt response on this. The tpmC figures look very
impressive, and tpmC is read intensive.
I had already read note 236679.1 "Comparing Performance Between RAW IO
vs OCFS vs EXT2/3" which I guess is the article to which you are
referring; it made me suspect that the poor performance was due to the
lack of an OS IO cache but I wasn't sure.
The database is
2003 Nov 13
2
Disappointing Performance Using 9i RAC with OCFS on Linux
Wim,
Thanks for your prompt response on this. The tpmC figures look very
impressive, and tpmC is read intensive.
I had already read note 236679.1 "Comparing Performance Between RAW IO
vs OCFS vs EXT2/3" which I guess is the article to which you are
referring; it made me suspect that the poor performance was due to the
lack of an OS IO cache but I wasn't sure.
The database is
2009 Apr 20
0
ERROR: Could not find the storage" when running cluvfy against OCFS2-shared mount-points
Hello ocfs2 experts,
OS is RHEL 2.6.9-78.0.13.ELsmp x86
With OCFS2 1.2.9
RDBMS/Clusterware s/w 10.2.0.1
Hoping someone can help me resolve the following error when running cluvfy
to check ocfs2-shared storage. Have validated that the devices were
correctly mounted and cross-referenced with another 2-node RAC environment
we have where we'd successfully run cluvfy on prior to installing
2019 May 13
0
[nbdkit PATCH v2 2/2] cache, cow: Reduce use of bounce-buffer
Although the time spent in memcpy/memset probably pales in comparison
to time spent in socket I/O, it's still worth worth reducing the
number of times we have to utilize a bounce buffer when we already
have aligned data.
Note that blocksize, cache, and cow all do block fragmentation and
bounce-buffer alignment; this brings the logic in cache and cow (which
were copied from one another) more
2007 Mar 27
2
Winlink Airmail Help
Hello All.
I was running Winlink Airmail fine for several months. Somewhere between up grading Wine and Xubuntu I lost the ability to see what I was typing when writing a new e-mail. The text is there but it cannot be seen. If I miss spell and use the spell checker it will appear. When the spell checker is finished the printing disappears again. This is a built-in spell checker in Airmail.
2018 Dec 28
0
[PATCH nbdkit 5/9] cache: Allow this filter to serve requests in parallel.
Make the implicit lock explicit, and hold it around blk_* operations.
This allows us to relax the thread model for the filter to
NBDKIT_THREAD_MODEL_PARALLEL.
---
filters/cache/blk.h | 7 ++++++
filters/cache/cache.c | 57 +++++++++++++++++++++++++++++++------------
2 files changed, 49 insertions(+), 15 deletions(-)
diff --git a/filters/cache/blk.h b/filters/cache/blk.h
index 24bf6a1..ab9134e
2019 Apr 24
0
[nbdkit PATCH 4/4] filters: Check for mutex failures
Commit 975dab14 argued that for simple lock/unlock sequences, it was
easier to avoid the cleanup.h macros. But since that time, we added
additional sanity checking to the macros, at which point the
boilerplate of inlining that sanity checking is outweighed compared to
just using the macros in more places.
Signed-off-by: Eric Blake <eblake@redhat.com>
---
filters/cache/cache.c | 23
2019 May 11
2
[nbdkit PATCH] cache: Reduce use of bounce-buffer
Although the time spent in memcpy/memset probably pales in comparison
to time spent in socket I/O, it's still worth worth reducing the
number of times we have to utilize a bounce buffer when we already
have aligned data.
Signed-off-by: Eric Blake <eblake@redhat.com>
---
filters/cache/cache.c | 60 ++++++++++++++++++++++++++++---------------
1 file changed, 39 insertions(+), 21
2004 Aug 08
0
Antwort: Re: Source for OCFS Support Package
Thanks Sunil for your advice.
I tried that both for
ocfs-tools-1.0.10.tar.gz and
ocfs-1.0.12.tar.gz.
./configure --with kernel=/usr/src/linux-2.4.21.-9.0.01.ELorafw1
make KVER=up
make install
That was successful.
When I tried to load_ocfs I still got "undefined symbol" errors.
I found another ocfs-users thread from April where Wim suggested using the
i686 kernel
2013 Apr 05
0
DRBD + Remus High IO load frozen
Dear all,
I have installed DRBD 8.3.11 compiled from sources. However the backend
block will freeze if there is high IO load. I use Remus to support high
availability and checkpointing is controlled by remus for each 400ms.
If I check the Iostat I got the idle CPU will decreasing extremely each
checkpointing and when its reach 0% of idle cpu the local backing device
will freeze and damage the
2018 Feb 01
0
[nbdkit PATCH v2 1/3] backend: Rework internal/filter error return semantics
Previously, we let a plugin set an error in either thread-local
storage (nbdkit_set_error()) or errno, then connections.c would
decode which error to use. But with filters in the mix, it is
very difficult for a filter to know what error was set by the
plugin (particularly since nbdkit_set_error() has no public
counterpart for reading the thread-local storage). What's more,
if a filter does
2002 Feb 05
1
Fw: CD Ripper Beta Software: RipTrax
RipTrax has just been modified to include support to OGG output file format
(Ogg Vorbis); including comment fields for pertinent track/album
information. You can download the latest version from this link:
http://web2.airmail.net/jlundy/riptrax.htm
If you are lacking a respectable playback tool for OGG files, try FreeAmp
at:
http://www.freeamp.org/
All feedback is welcome (please go easy on