[BackupPC-users] [Fwd: Re: OK, how about changing the server's backuppc process niceness?]
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Fella's, truly, my apologies and ALL THE THANX I CAN MUSTER. Mr.
Holger, you sir, in particular. In my less-than-savvy windoze-based
mind (yes still, and I've been ALL Linux for over a year...), I had
completely forgotten that there are many opportunities for bottlenecks,
and it turned out to be as simple as a few too many 40-wire IDE cables,
connecting my dedicated swap-drive, as well as both my LVM-managed
backup drives...
Yes, I feel like an idiot (in case you were going to be too kind to
ask), and just today, got and replaced the cables, to show a HUGE
improvement in performance (over all, not just on the backups...).
Again, Holger, thank you. It was you who first got me rethinking my
short-sightedness, and brought me to the problem!!
Paul
- Original Message
Subject: Re: [BackupPC-users] OK, how about changing the server's
backuppc process niceness?
Date: Tue, 02 Jan 2007 18:01:44 -0600
From: Jason Hughes [EMAIL PROTECTED]
To: Holger Parplies [EMAIL PROTECTED]
CC: Paul Harmor [EMAIL PROTECTED],
BackupPC-users@lists.sourceforge.net
References: [EMAIL PROTECTED]
[EMAIL PROTECTED]
Holger Parplies wrote:
Paul Harmor wrote on 01.01.2007 at 20:51:43 [[BackupPC-users] OK, how about
changing the server's backuppc process niceness?]:
I have only 2 machines (at the moment) being backed up, but every time
the backups start, the server system slows to an UNUSEABLE crawl, until
I can, slowly, start top, and renice the 4 backuppc processes.
Any way to make them start nicer, to begin with?
[...]
I wouldn't be surprised, though, if your problem is either not CPU related
or caused by a misconfiguration if it really is. Please someone correct me
if I'm wrong, but a 1.3 GHz Duron doesn't sound slow enough by far to me to
be legitimately overloaded by 2 backups. 512MB of memory maybe, but renicing
wouldn't help then, would it?
Have you tried what happens, if you only run *one* backup at a time
($Conf{MaxBackups} = 1;)?
Good recommendations, Holger. I would add that niceing a process only
changes its scheduling affinity, but does not modify in any way its hard
disk activity or DMA priority, so until the original poster understands
what exactly makes the server slow, he's shooting in the dark. A busy
hard drive usually makes a system feel slower than a busy CPU process,
because hard disk activity requires a 6-10ms seek minimum, plus
streaming and unloading to vram, depending on what other processes are
doing.
Personally, I dedicate a Pentium Pro 200mhz with a whopping 128mb of
ram, and it backs up about 130gb across four machines, all starting
about at the same time, using rsyncd on 3 and SMB on 1. It's true the
CGI interface is slow to respond during two simultaneous backups, but
otherwise it's usable. I wouldn't put another app on that machine,
though, for obvious reasons.
IMHO, the original poster would do well to diagnose what bottleneck is
the culprit before attempting to fix it. My suggestions, to help reduce
the CPU usage further, is to drop compression to 0. That should be
about all that BackupPC would spend a lot of time on during a backup.
But my PPro200 can handle level 3 compression; a 1Ghz Duron will too.
JH
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[BackupPC-users] OK, how about changing the server's backuppc process niceness?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I'm running a 1.3Gig Duron, 512 DDR, LVM and 2x160GB drives, on Ubuntu 6.10. I have only 2 machines (at the moment) being backed up, but every time the backups start, the server system slows to an UNUSEABLE crawl, until I can, slowly, start top, and renice the 4 backuppc processes. Any way to make them start nicer, to begin with? -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.3 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFmdbO3/Z3+N7G54kRAkf2AJ41m2Kkqu/0qX3ZbF3P+LIa5RxUKwCfSpuw uEsm01F98mCt7C9JBXbrTog= =MLs+ -END PGP SIGNATURE- - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
[BackupPC-users] Errors after upgrade to v3beta
After having upgraded to the 3.0.0 Beta 3 (I believe I did it all correctly), all is dead. Upon attempting to access the gui, the initial image is missing, then below that, Error: Unable to read config.pl or language strings!!, then below that, an empty selection box... Upon attempting to restart the service, here is what I receive: [EMAIL PROTECTED]:/etc/init.d# ./backuppc restart * Restarting backuppc... No process in pidfile `/var/run/backuppc/BackupPC.pid' found running; none killed. No language setting BackupPC::Lib-new failed This makes me quite firmly believe that the service is no longer running, or operable. Any ideas what happened??? - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
Re: [BackupPC-users] Errors after upgrade to v3beta
OK, so now, I've uninstalled everything (AFAIK), and installed the 3b3 clean, then migrated (manually) all my settings, hosts file, etc... At this point, there is NO web gui, and I can't seem to find any of the .ht* files necessary... Paul Harmor wrote: After having upgraded to the 3.0.0 Beta 3 (I believe I did it all correctly), all is dead. Upon attempting to access the gui, the initial image is missing, then below that, Error: Unable to read config.pl or language strings!!, then below that, an empty selection box... Upon attempting to restart the service, here is what I receive: [EMAIL PROTECTED]:/etc/init.d# ./backuppc restart * Restarting backuppc... No process in pidfile `/var/run/backuppc/BackupPC.pid' found running; none killed. No language setting BackupPC::Lib-new failed This makes me quite firmly believe that the service is no longer running, or operable. Any ideas what happened??? - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/ - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
Re: [BackupPC-users] Errors after upgrade to v3beta
David, thank you for your response. However, after looking into the system, in an attempt to uninstall all traces of backuppc, for a clean reinstall, I must say that I did not find the BackupPC_Admin file ANYWHERE. As well, I had already looked over the permissions, and all seemed to be OK. However, to be honest, when asked, during the previous installs, where to place things, I had no idea where to put any of it, including the cgi-bin stuff. Any help on that would be appreciated, if you can offer it. David Relson wrote: On Sun, 24 Dec 2006 16:59:22 -0700 Paul Harmor wrote: OK, so now, I've uninstalled everything (AFAIK), and installed the 3b3 clean, then migrated (manually) all my settings, hosts file, etc... At this point, there is NO web gui, and I can't seem to find any of the .ht* files necessary... Hi Paul, Sad to say, I've encountered such problems several times and there seem to be several possible causes. Likely the problem is an error in file permissions, file ownership, or directory pathing. A place to start is with your apache access and error logs. They will likely indicate what apache wanted to do, but couldn't. Generally apache is trying to run BackupPC_Admin as a cgi-script, so find out BackupPC_Admin's path on your machine and try running it. The problem could be that it doesn't have execute permission or that apache isn't running it as the proper user (backuppc). HTH, David - Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.phpp=sourceforgeCID=DEVDEV ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
