Hi Dave, On 2015-12-16 12:39, Lewis, Dave wrote: >> -----Original Message----- >> From: Alan Brown [mailto:a...@mssl.ucl.ac.uk] >> Sent: Tuesday, December 15, 2015 8:08 AM >> To: Lewis, Dave; bacula-users@lists.sourceforge.net >> Subject: Re: [Bacula-users] Bacula backup speed > ... >> What size is your database? ("select count(*) from File;") What write >> speeds are you actually achieving to the database drive? >> (MB/s and iops - "iostat -kxt 2" will tell you this) > > Enter SQL query: SELECT COUNT(*) FROM File; > +----------+ > | COUNT(*) | > +----------+ > | 659,172 | > +----------+ >
This is nothing. I have an LTO-6 running on a Solaris 10 x64 system with 8Gb of RAM, with 141734865 File entries. This system drives the LTO-6 at near its maximum speed, but it does use fibre-channel, so a lot of interface-related speed problems go away. (Previously it ran an LTO-4 using UW-SCSI, it was fast enough but occasionally just flaked out, FC is the bees knees!!) Also, ignore the guff about needing SSD's to feed the tape, my system runs on a ZFS pool of 3 * 1Tb disks to spool on, and the MySQL InnoDB files also live on this pool, in ZFS file systems configured for the best performance of MySQL. Fix your network problems, first, as other ahve said. It could be anything, from dodgy NICs, or badly configured switches. Or just *one* 10meg switch stuck somewhere that nobody knows about! (This happened to me a couple of years ago, the Preventors of Information Services in Networking insisted that it was all 100Mb, eventually a real network engineer and I did the "trace the physical cables" and found that someone had put an ancient 10Meg switch in one of the cabinets. Cue complete denial and "It doesn't exist" from the eejits, we just swapped a couple of cables and I got the speed I wanted, perhaps someone lost some!) I prefer Intel NICs for machines that have a need for network performance, even my peecees at home have them in preference to the on-board RealTeks or whatever. Tune your database. I used the script at http://mysqltuner.pl a few years ago, it's been fine since. Make sure that the temporary file space al Did you build Bacula yourself, or are you using some sort of pre-packaged version? If you built it yourself, did you enable batch inserts on the database? If it's pre-packaged, ask the package maintainer. And check that it really does have batch mode available. And that it is spooling attributes as well. (You may have already answered this.) TL;DR - go over your network with a fine-tooth comb, and follow the advice from the mysqltuner.pl script. Cheers, Gary B-) ------------------------------------------------------------------------------ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
