failed trying to fork a process

2007-12-24 20:56:00

This is a multi-part message in MIME format.

------=_NextPart_000_0015_01C14C3B.0C9000F0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Hello every one,

We are running Netbackup 3.2 on a Sun 4500, Solaris 8 with 8GB ram 2GB =
used as shared memory, backing up 4000 unix clients. We are multiplexing =
clients with 32 on 8 STK 9840 tape drives hoping to achieve 256 Active =
jobs at one time. Buffers in Netbackup are set to 256KX16. We had no =
problems with multiplex by 16,. When trying to multiplex by 32 We notice =
about 50 clients of 4000 failes with netbackup error code 28 as in =
system failed to fork any more processes. According to Netbackup =
documentation, it has to do with over-loading the system, also message =
log indicate kernel warning with same problem. My question is, Is there =
a tunable paramaters that I can input in /etc/system to allow the Sun =
machineor Solaris 8 to fork a higher number of process, thus allowing us =
to push the machine to the max. For those of you who are not familiar =
with Netbackup software, Multiplexing is allowing Netbackup to backup =
multiple machines to 1 tape drive which require alot of shared memory =
and other tunings.

Our current /etc/system is as follows

* Configure Gigabit Ethernet
set ge:ge_lance_mode=3D0
set ge:ge_adv_1000autoneg_cap=3D0
set ge:ge_adv_1000fdx_cap=3D1
set ge:ge_adv_1000hdx_cap=3D0
set ge:ge_ipg1=3D20
set ge:ge_ipg2=3D10

set md:mddb_bootlist1=3D"sd:15:16 sd:63:16 sd:71:16"
set maxusers=3D32
set shmsys:shminfo_shmmin=3D1
set shmsys:shminfo_shmmni=3D400
set shmsys:shminfo_shmseg=3D100
set shmsys:shminfo_shmmax=3D2048000000
set semsys:seminfo_semume=3D64
set semsys:seminfo_semmap=3D64
set semsys:seminfo_semopm=3D32
set semsys:seminfo_semmni=3D1024
set semsys:seminfo_semmns=3D1024
set semsys:seminfo_semmnu=3D1024
set semsys:seminfo_semmsl=3D64
set msgsys:msginfo_msgmap=3D512
set msgsys:msginfo_msgmax=3D8192
set msgsys:msginfo_msgmnb=3D65536
set msgsys:msginfo_msgmni=3D256
set msgsys:msginfo_msgssz=3D8
set msgsys:msginfo_msgtql=3D512
set msgsys:msginfo_msgseg=3D8192

Thanks in advanced for any help.
Nabil

------=_NextPart_000_0015_01C14C3B.0C9000F0
Content-Type: text/html;
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META content=3D"MSHTML 5.00.3315.2870" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Hello every one,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>We are running Netbackup 3.2 on a Sun =
4500, Solaris=20
8 with 8GB ram 2GB used as shared memory, backing up 4000 unix clients. =
We are=20
multiplexing clients with 32 on 8 STK 9840 tape drives hoping to achieve =
256=20
Active jobs at one time. Buffers in Netbackup are set to 256KX16. We had =
no=20
problems with multiplex by 16,. When trying to multiplex by 32 We notice =
about=20
50 clients of 4000 failes with netbackup error code 28 as in system =
failed to=20
fork any more processes. According to Netbackup documentation, it has to =
do with=20
over-loading the system, also message log indicate kernel warning with =
same=20
problem. My question is, Is there a tunable paramaters that I can input =
in=20
/etc/system to allow the Sun machineor Solaris 8 to fork a higher number =
of=20
process, thus allowing us to push the machine to the max. For those of=20
you who are not familiar with Netbackup software, Multiplexing is =
allowing=20
Netbackup to backup multiple machines to 1 tape drive which require alot =
of=20
shared memory and other tunings.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>Our current /etc/system is as =
follows</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=3DArial size=3D2>* Configure Gigabit Ethernet<BR>set=20
ge:ge_lance_mode=3D0<BR>set ge:ge_adv_1000autoneg_cap=3D0<BR>set=20
ge:ge_adv_1000fdx_cap=3D1<BR>set ge:ge_adv_1000hdx_cap=3D0<BR>set=20
ge:ge_ipg1=3D20<BR>set ge:ge_ipg2=3D10<BR><BR>set =
md:mddb_bootlist1=3D"sd:15:16=20
sd:63:16 sd:71:16"<BR>set maxusers=3D32<BR>set =
shmsys:shminfo_shmmin=3D1<BR>set=20
shmsys:shminfo_shmmni=3D400<BR>set shmsys:shminfo_shmseg=3D100<BR>set=20
shmsys:shminfo_shmmax=3D2048000000</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>set semsys:seminfo_semume=3D64<BR>set=20
semsys:seminfo_semmap=3D64<BR>set semsys:seminfo_semopm=3D32<BR>set=20
semsys:seminfo_semmni=3D1024<BR>set semsys:seminfo_semmns=3D1024<BR>set=20
semsys:seminfo_semmnu=3D1024<BR>set semsys:seminfo_semmsl=3D64<BR>set=20
msgsys:msginfo_msgmap=3D512<BR>set msgsys:msginfo_msgmax=3D8192<BR>set=20
msgsys:msginfo_msgmnb=3D65536<BR>set msgsys:msginfo_msgmni=3D256<BR>set=20
msgsys:msginfo_msgssz=3D8<BR>set msgsys:msginfo_msgtql=3D512<BR>set=20
msgsys:msginfo_msgseg=3D8192</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Thanks in advanced for any =
help.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Nabil</FONT></DIV>
<DIV><FONT face=3DArial size=3D2><BR> </DIV></FONT></BODY></HTML>

------=_NextPart_000_0015_01C14C3B.0C9000F0--

Actived: 0 answers; - size: 6141 bytes; - view related info - Similar thread

Comments

Got something to say?

You must be logged in to post a comment.

thatsjava.com

failed trying to fork a process

Comments