Hi, thank you very much for your help.
The real reason for the slowness was the networking card in the backup server system. It only was so strange that I did some scp copying and everything seemed to work. I did some backups that were perfectly okay. The backupduration were 2 minutes but just afterwards the same backup lasted 40 minutes. At the end I've seen a scp copy job presenting me "stalled". Then I started to change the networking card and now it's speeding. So again thank you Rgds Ralf Paul Bijnens <[EMAIL PROTECTED] An: [EMAIL PROTECTED] ation.com> Kopie: amanda-users@amanda.org Gesendet von: Thema: Re: Very, very slow backup owner-amanda-users@ amanda.org 26.01.2005 11:43 [EMAIL PROTECTED] wrote: > > what could be the reason for a very very slow backup? Actually, I have no idea. Just a few remarks. > > My backup server is a celeron 500 with 128 MB memory and a tandberg slr 24 > tape box. > My network is 100MB switched. > The gamma client is a 800 MHz PIII system. > The dv-02 client is a 1,2 GHz Athlon system. My backup server is a celeron 300 MHz with 128 MB memory. And I get a much larger throughput. So it's not the servers capacity, neither the clients. > > I have no explanation for this slowness. If I copy a big file with scp from > gamma to backup server it is normal speed. Also when you're copy from two different hosts at the same time? A frequent error is a duplex mismatch on the switches; but that would also be noticed when copying a large file from one host. Just a tought... Does "netstat -ni" have a large value in the error columns on client and/or server? > Bythe way the backupjob on gamm was only one iso image file. Was that gnutar or dump? Is the first time you make a backup? or was it fast before and suddenly slow? Do you have some clients where the problem does not exist? Any strange message in the debug-files on client: /tmp/amanda/*.<datetimestamp>.debug . Was there any other activity on the clients? Was there some non-responding nfs-directory on the clients (which tar has to stat to find out it is an nfs-directory and skip it). Is there anything else between the server and client? firewall with misconfigured traffic-shaper, etc...? When this backup is running, can you find out what the dump/tar on the client is doing? (strace, truss, lsof...) > > Thanks and Rgds > Ralf > > > > STATISTICS: > Total Full Daily > -------- -------- -------- > Estimate Time (hrs:min) 0:00 > Run Time (hrs:min) 26:59 > Dump Time (hrs:min) 51:53 51:53 0:00 > Output Size (meg) 1444.5 1444.5 0.0 > Original Size (meg) 1444.5 1444.5 0.0 > Avg Compressed Size (%) -- -- -- > Filesystems Dumped 2 2 0 > Avg Dump Rate (k/s) 7.9 7.9 -- > > Tape Time (hrs:min) 0:16 0:16 0:00 > Tape Size (meg) 1444.5 1444.5 0.0 > Tape Used (%) 12.0 12.0 0.0 > Filesystems Taped 2 2 0 > Avg Tp Write Rate (k/s) 1517.3 1517.3 -- > > USAGE BY TAPE: > Label Time Size % Nb > LXBACK127 0:16 1444.5 12.0 2 > > > NOTES: > taper: tape LXBACK127 kb 1479232 fm 2 [OK] > > > DUMP SUMMARY: > DUMPER STATS TAPER STATS > HOSTNAME DISK L ORIG-KB OUT-KB COMP% MMM:SS KB/s MMM:SS KB/s > -------------------------- --------------------------------- ------------ > dv-02 -OpenOffice 0 821180 821180 -- 1502:31 9.1 9:011517.2 > gamma -amandatest 0 657970 657970 -- 1610:41 6.8 7:141517.4 Use the "columnspec" parameter in amanda.conf to add some spaces between the columns. > > (brought to you by Amanda version 2.4.4p3) > > > -- Paul Bijnens, Xplanation Tel +32 16 397.511 Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512 http://www.xplanation.com/ email: [EMAIL PROTECTED] *********************************************************************** * I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, F6, * * quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, * * stop, end, F3, ~., ^]c, +++ ATH, disconnect, halt, abort, hangup, * * PF4, F20, ^X^X, :D::D, KJOB, F14-f-e, F8-e, kill -1 $$, shutdown, * * kill -9 1, Alt-F4, Ctrl-Alt-Del, AltGr-NumLock, Stop-A, ... * * ... "Are you sure?" ... YES ... Phew ... I'm out * ***********************************************************************