Veritas-bu

Re: [Veritas-bu] Netbackup 6.0 Backup Speed on HP Windows Blade

2007-08-09 09:39:01
Subject: Re: [Veritas-bu] Netbackup 6.0 Backup Speed on HP Windows Blade
From: "Martin, Jonathan" <JMARTI05 AT intersil DOT com>
To: <VERITAS-BU AT mailman.eng.auburn DOT edu>
Date: Thu, 9 Aug 2007 09:15:21 -0400
Login to the console on the media server pushing the data and go to
start --> run --> perfmon.  Plenty of performance data in there for all
your needs.  I doubt you've got a CPU issue unless you are running
serious NDMP / Flashbackup type activity.  Where is this data coming
from?  What kind of policies?  Each LTO3 drive can write at 120MB/sec
(fully compressed.)  Do you have disk and/or nics capable of pushing
that amount of data?  120MB/sec x 12 disks is 1440MB/sec or approx 11.25
Gigabit Nics worth of network traffic at full capacity.  Writing that
kind of data from disk is probably 100+ spindles.

-Jonathan



-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of tzurita
Sent: Wednesday, August 08, 2007 8:01 PM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Netbackup 6.0 Backup Speed on HP Windows Blade


All, have a question about speed.

We are running the master server on a Windows C class HP blade with a
dual core 2.4 GHz Atholon CPU and 8 GBs memory.  Has two FC ports
connected to:

2 Two HP StorageWorks Enterprise Class ESL712 Tape Libraries
712 - Tape slots each library
12 - LTO3 Tape drives total

Backups are not that fast and I am questioning why.  This is just a fast
POC test but I would like to tune and give the customer more valid
numbers.

Any ideas would be great.  My thoughts are that we don't have enough
CPU's to push the tape libraries but why such a vast difference betwen
windows and solaris backups?  I am just puzzled.  Help please.

Here are the values in the following files:

C:\Program Files\Veritas\Netbackup\db\config\NUMBER_DATA_BUFFERS
132
C:\Program Files\Veritas\Netbackup\db\config\NUMBER_DATA_BUFFERS_DISK
32
C:\Program Files\Veritas\Netbackup\db\config\NUMBER_DATA_BUFFERS_RESTORE
64
C:\Program Files\Veritas\Netbackup\db\config\SIZE_DATA_BUFFER
262144
C:\Program Files\Veritas\Netbackup\NET_BUFFER_SZ
1049600
C:\Program Files\Veritas\Netbackup\NET_BUFFER_SZ_REST
525312

For Network Windows servers clients, we average just under 7 MB/sec
Same server configuration for Solaris   33 MB/sec


>>From bptm log:
15:08:25.456 [3492.6020] <2> io_set_sendbuf: setting send network buffer
to
525312 bytes
15:08:25.456 [3492.6020] <2> io_init: using 128 data buffers
15:08:25.456 [3492.6020] <2> io_init: buffer size for read is 262144
15:08:25.456 [3492.6020] <2> io_init: child delay = 20, parent delay =
30
(milliseconds)
15:08:25.456 [3492.6020] <2> create_shared_memory: shm_size = 33557564,
buffer address = 0x1170000, buf control = 0x3170000, ready ptr =
0x3170c00, res_cntl = 0x3170c04
15:08:25.456 [3492.6020] <2> setup_bpbkar_info: Global\NetBackup Media
Manager SHM Info Path app429d_1186419216 file successfully created
15:08:25.456 [3492.6020] <2> nbjm_media_request: Passing job control to
NBJM, type READ

.......

15:17:12.749 [3664.1404] <2> bptm: EXITING with status 0 <----------
15:18:25.355 [2720.5456] <2> write_data: writing block shorter than
BUFF_SIZE, 218112 bytes
15:18:25.355 [2720.5456] <2> write_data: writing short block, 218112
bytes, remainder 0
15:18:25.355 [2720.5456] <2> write_data: waited for full buffer 63961
times, delayed 80764 times
15:18:25.355 [2720.5456] <2> write_backup: write_data() returned,
exit_status = 0, CINDEX = 0, TWIN_INDEX = 0, backup_status = 0
15:18:25.355 [2720.5456] <2> io_terminate_tape: writing empty backup
header, drive index 0, copy 1
15:18:25.355 [2720.5456] <2> io_ioctl: command (0)MTWEOF 1 from
(bptm.c.8229) on drive index 0
15:18:31.933 [2720.5456] <2> io_terminate_tape: absolute block position
prior to writing empty header is 241703, copy 1
15:18:31.933 [2720.5456] <2> io_write_back_header: drive index 0,
empty_file, file num = 2, mpx_headers = 0, copy 1
15:18:31.933 [2720.5456] <2> io_close: closing C:\Program
Files\VERITAS\NetBackup\db\media\tpreq\drive_HP.ULTRIUM3-SCSI.000, from
bptm.c.8369
15:18:31.933 [2720.5456] <2> io_terminate_tape: block position check:
actual 241703, expected 241703
15:18:31.933 [2720.5456] <2> send_MDS_msg: MEDIADB 1 28 AK6501 4000002
*NULL* 21 1186511708 1186511708 1187721308 0 0 0 0 1 1 0 0 1024 0 241703
0
15:18:31.933 [2720.5456] <2> ParseConfigExA: Unknown configuration
option on line 56: RenameIfExists = 1
15:18:31.949 [2720.5456] <2> JobInst::sendIrmMsg: returning
15:18:31.949 [2720.5456] <2> openTpreqFile: tpreq_file: C:\Program
Files\VERITAS\NetBackup\db\media\tpreq\drive_HP.ULTRIUM3-SCSI.000,
serial_num: HU10709CR7
15:18:31.949 [2720.5456] <2> get_drive_path: SCSI coordinates {0,0,0,1},
dos_path \\.\Tape0, pnp_path
\\?\scsi#sequential&ven_hp&prod_ultrium_3-scsi&rev_l63w#5&23bbaf37&0&000
001#{53f5630b-b6bf-11d0-94f2-00a0c91efb8b}
15:18:31.949 [2720.5456] <2> check_serial_num: serial number match for
drive with SCSI coordinates {0,0,0,1}, dos_path \\.\Tape0, drive serial
number HU10709CR7, expected serial number HU10709CR7 15:18:31.980
[2720.5456] <2> init_tape: \\.\Tape0 (SCSI coordinates
{0,0,0,1}) configured with blocksize 0
15:18:31.996 [2720.5456] <2> init_tape: \\.\Tape0 (SCSI coordinates
{0,0,0,1}) has compression enabled
15:18:32.011 [2720.5456] <2> io_open: SCSI RESERVE

>>From status log of NB Master Full backup:   about   22 MB/sec

8/7/2007 2:35:56 PM - positioning AK6501 to file 1
8/7/2007 2:36:06 PM - positioned AK6501; position time: 00:00:10
8/7/2007 2:36:06 PM - begin writing
8/7/2007 2:45:18 PM - Warning bpbrm(pid=3900) from client bmedia403: WRN
- Removable Storage Management: unable to export database (WIN32 21: The
device is not ready. )

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