Zitat von Josh Fisher <jfis...@pvct.com>: > On 11/29/2014 5:43 AM, Patrick wrote: > >> Hi Josh, Thanks for your reply. >>> You can try to isolate the problem. Try running a Windows backup with >>> VSS, compression, and encryption all turned off. Compare a Windows VM >>> against a Linux VM on the same host if possible. >> >> I don’t use compression or encryption, but VSS. I disabled VSS and get >> about 40 MByte/s. If I also set acl support = no, I get about 43 >> MByte/s. It’s better, but far away from the 90 MByte/s from a linux box >> with similar data. Last night I have took a look at the bacula console >> during the full backups and could see one Windows clients with 65 >> MByte/s. This server hosts a SQL Server with big database dump files. >> The Bacula File Daemon is faster with big files. How can I tune the >> Bacula File Daemon to increase the transfer rate for a lot of small >> files? Can I set the maximum memory usage? Is a ramdisk which collects >> the files from the hard drive and send it as bunches to bacula possible? > > You can change the MaximumNetworkBufferSize to 32k in both the client > and SD configurations. Slowdowns of Windows clients have been noted > before for 64k+ buffer sizes. > > You might also consider tweaking the NTFS filesystem on the Windows > client. The filesystem parameters are in > HKLM/system/CurrentControlSet/Control/FileSystem. Setting the DWORD > value NtfsDisableLastAccessUpdate to nonzero will prevent a write to > the disk each time a file is accessed. It is equivalent to the noatime > option of ext4, so can definitely impact jobs like bacula-fd that are > reading lots of files. >
Technical details in case of NTFS can be found here for example: http://technet.microsoft.com/de-de/library/bb457112%28en-us%29.aspx Regards Andreas ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
