have you got network buffer size at 256k?
 

> -----Original Message-----
> From: Dave Markham [mailto:dave.markham AT fjserv DOT net] 
> Sent: 26 October 2005 16:04
> To: McCammont, Anderson (IT)
> Cc: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] system settings and tuning
> 
> McCammont, Anderson (IT) wrote:
> 
> >scsi or fibre attached?  any errors on the connections - 
> 5MB/s is lousy
> >- where's your data coming from?  If a remote client check 
> for speed and
> >duplex mismatches.
> >what do you get from doing a 'dd bs=256k' of local data direct to the
> >tape drive - ie take netbackup out of the picture.
> >When that's at a sensible spped, backup the local files with 
> netbackup
> >and ensure you get similar throughput.
> >Then look at a network backup.
> >
> >how much memoryon the master?  assuming you have plenty, say 
> >2GB, for
> >lto2 use
> >NUMBER_DATA_BUFFERS  64 
> >SIZE_DATA_BUFFERS            262144
> >NET_BUFFER_SZ                262144
> >
> >have these in /etc/system, change the ge for the equiv for your NICs
> >* netbackup  shared mem, sem and msg params
> >set msgsys:msginfo_msgmap=65536
> >set msgsys:msginfo_msgmni=65536
> >set msgsys:msginfo_msgtql=65536
> >set msgsys:msginfo_msgmnb=16384000
> >set msgsys:msginfo_msgseg=32767
> >set msgsys:msginfo_msgssz=2048
> >set semsys:seminfo_semmsl=1024
> >* see infodoc ID71160
> >* monitor with 
> >* kstat -c net | egrep 'nocanput|blocked'
> >* kstat -n ge0 -s rx_overflow
> >* and 20040615
> >set sq_max_size=0x64
> >* gigE flow control
> >set ge:ge_adv_pauseTX=1
> >* bpjobd swallows file descriptors
> >set rlim_fd_max=65535
> >set rlim_fd_cur=2048
> >
> >set your network switches to send and receive pause frames if using
> >gigE.
> >
> >
> >  
> >
> >>-----Original Message-----
> >>From: veritas-bu-admin AT mailman.eng.auburn DOT edu 
> >>[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of 
> >>Dave Markham
> >>Sent: 26 October 2005 12:43
> >>To: veritas-bu AT mailman.eng.auburn DOT edu
> >>Subject: [Veritas-bu] system settings and tuning
> >>
> >>I have used the settings described here previously:-
> >>
> >>http://seer.support.veritas.com/docs/183702.htm
> >>
> >>And solaris tuning settings in /etc/system from a 
> performance tuning 
> >>guide but they all seem to be a bit dated and i was wondering 
> >>had anyone 
> >>any more up to date info for performance increasing?
> >>
> >>I have just set up a Solaris 9 netbackup 5.0MP5 with an L25 
> >>and two LTO2 
> >>drives.  Im only getting 5meg/sec on a backup test but have 
> >>done no tuning.
> >>
> >>With servers getting better ( this is a v240 ) i was wondering were 
> >>there hight /etc/system settings and other tuning parameters for NBU
> >>
> >>Any help would be great
> >>
> >>Cheers
> >>_______________________________________________
> >>Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> >>http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> >>
> >>    
> >>
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> >_______________________________________________
> >Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
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> >
> >  
> >
> Thanks for that.
> 
> Im scsi attached directly at the moment from netbackup 
> master/media to 
> the L25 and getting 5mb/s.
> 
> I will go and change the NUMBER_DATA_BUFFERS to 64 from 16 i had 
> previously.
> 
> There is enough mem im sure and i worked out shmmax to be 
> 83886080 with 
> 2 drives , mpx of 10 and 262144 SIZE_DATA_BUFF and 16 DATA BUFFERS. 
> After all this speed went to 15mb/s.
> 
> Im hoping to squeeze more out of it as they are LTO2.
> 
> Cheers
>
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