Date: Tue, 23 Aug 2005 16:56:42 -0700 From: Danny Howard <dannyman@toldme.com> To: freebsd-questions@freebsd.org Subject: limits puzzle - different limits on similar machines Message-ID: <20050823235642.GP51748@ratchet.nebcorp.com>
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Hello,
We have a process that runs fine on one machine but then dies on
another, spitting an out-of-memory error.
Interestingly, the limits for the user are higher on the working machine
and lower on the other.
So, I try to puzzle out why, reading all about login.conf, but
login.conf is the same on every machine I visit, and it sets
datasize=unlimited ...
1-16:35 djh@mito ~> uname -a && grep datasize /etc/login.conf && limits
FreeBSD mito.sr._________.com 5.4-STABLE FreeBSD 5.4-STABLE #3: Fri Jul 29 16:05:16 PDT 2005 root@mito.sr._________.com:/usr/obj/usr/src/sys/MITO i386
:datasize=unlimited:\
# :datasize-cur=22M:\
# :datasize=8M:\
# :datasize=12M:\
# :datasize=infinity:\
# :datasize=infinity:\
# :datasize-cur@:\
# :datasize-cur=64M:\
# :datasize=2M:\
Resource limits (current):
cputime infinity secs
filesize infinity kb
datasize 524288 kb
stacksize 65536 kb
coredumpsize infinity kb
memoryuse infinity kb
memorylocked infinity kb
maxprocesses 3632
openfiles 7264
sbsize infinity bytes
vmemoryuse infinity kb
Okay, but on a different machine, the machine that runs the tricky process:
1-16:36 djh@bali ~> uname -a && grep datasize /etc/login.conf && limits
FreeBSD bali.web.sr._________.com 4.8-STABLE FreeBSD 4.8-STABLE #1: Mon Apr 21 1
3:36:32 PDT 2003 josh@bali.web.sr._________.com:/local0/world/obj/local0/wor
ld/src/sys/BALI i386
:datasize=unlimited:\
# :datasize-cur=22M:\
# :datasize=8M:\
# :datasize=12M:\
# :datasize=infinity:\
# :datasize=infinity:\
# :datasize-cur@:\
# :datasize-cur=64M:\
# :datasize=2M:\
Resource limits (current):
cputime infinity secs
filesize infinity kb
datasize 1048576 kb
stacksize 1048576 kb
coredumpsize infinity kb
memoryuse infinity kb
memorylocked infinity kb
maxprocesses 5547
openfiles 11095
sbsize infinity bytes
vmemoryuse infinity kb
Others?
0-19:37 djh@web3 ~> uname -a && grep datasize /etc/login.conf && limits
FreeBSD web3.web._________.com 4.10-RELEASE-p2 FreeBSD 4.10-RELEASE-p2 #1: Thu O
ct 21 18:39:52 EDT 2004 root@web3.web._________.com:/local0/world/obj/local0
/world/src/sys/WEB3 i386
:datasize=unlimited:\
# :datasize-cur=22M:\
# :datasize=8M:\
# :datasize=12M:\
# :datasize=infinity:\
# :datasize=infinity:\
# :datasize-cur@:\
# :datasize-cur=64M:\
# :datasize=2M:\
Resource limits (current):
cputime infinity secs
filesize infinity kb
datasize 524288 kb
stacksize 65536 kb
coredumpsize infinity kb
memoryuse infinity kb
memorylocked infinity kb
maxprocesses 5547
openfiles 11095
sbsize infinity bytes
vmemoryuse infinity kb
0-16:21 djh@rahu ~> uname -a && grep datasize /etc/login.conf && limits
FreeBSD rahu.web.sr._________.com 4.9-STABLE FreeBSD 4.9-STABLE #1: Mon Mar 22 1
3:38:20 PST 2004 root@rahu.web.sr._________.com:/local0/world/obj/local0/wor
ld/src/sys/RAHU i386
:datasize=unlimited:\
# :datasize-cur=22M:\
# :datasize=8M:\
# :datasize=12M:\
# :datasize=infinity:\
# :datasize=infinity:\
# :datasize-cur@:\
# :datasize-cur=64M:\
# :datasize=2M:\
Resource limits (current):
cputime infinity secs
filesize infinity kb
datasize 524288 kb
stacksize 65536 kb
coredumpsize infinity kb
memoryuse infinity kb
memorylocked infinity kb
maxprocesses 5547
openfiles 11095
sbsize infinity bytes
vmemoryuse infinity kb
I originally suspected that the login class was being set differently on
different systems based on whether the system was a NIS client or if the
user was in master.passwd ... in neither case have I bothered setting a
login class ... but in the above output, rahu and bali are NIS clients,
web3 and mito are not ...and mito has differing maxprocesses and
openfiles from other 5.x hosts .. why? Could it be the kernel build?
0-16:46 djh@mito ~> diff /usr/src/sys/i386/conf/GENERIC /usr/src/sys/i386/conf/MITO
2c2
< # GENERIC -- Generic kernel configuration file for FreeBSD/i386
---
> # MITO -- Generic kernel configuration file for FreeBSD/i386
19c19
< # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.413.2.13 2005/04/02 16:37:58 scottl Exp $
---
> # $FreeBSD: src/sys/i386/conf/MITO,v 1.413.2.8 2004/10/24 17:42:08 scottl Exp $
25c25
< ident GENERIC
---
> ident MITO
28c28
< #hints "GENERIC.hints" # Default places to look for devices.
---
> #hints "MITO.hints" # Default places to look for devices.
61c61
< device apic # I/O APIC
---
> device apic # I/O APIC
78a79,81
> # Enable SCSI access to IDE DVD drive
> # http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/creating-cds.html#ATAPICAM
> device atapicam
112d114
< device arcmsr # Areca SATA II RAID
248d249
< # Note that 'bpf' is required for DHCP.
254d254
< #device ehci # EHCI PCI->USB interface (USB 2.0)
268d267
< device cdce # Generic USB over Ethernet
276a276,284
>
> # dummynet
> options IPFIREWALL
> options IPFIREWALL_DEFAULT_TO_ACCEPT
> options DUMMYNET
> options HZ=1000
>
> # CARP
> device carp
I doubt that could be it ... and yet I have a 4.x machine that gets
limits similar to mito!?
1-16:51 djh@ratchet ~> uname -a && grep datasize /etc/login.conf &&
limits FreeBSD ratchet._______.com 4.10-RELEASE-p3 FreeBSD
4.10-RELEASE-p3 #1: Thu Nov 4 22:42:42 PST 2004
root@ratchet._______.com:/usr/obj/usr/src/sys/RATCHET i386
:datasize=unlimited:\
# :datasize-cur=22M:\
# :datasize=8M:\
# :datasize=12M:\
# :datasize=infinity:\
# :datasize=infinity:\
# :datasize-cur@:\
# :datasize-cur=64M:\
# :datasize=2M:\
Resource limits (current):
cputime infinity secs
filesize infinity kb
datasize 524288 kb
stacksize 65536 kb
coredumpsize infinity kb
memoryuse infinity kb
memorylocked infinity kb
maxprocesses 3675
openfiles 7351
sbsize infinity bytes
vmemoryuse infinity kb
... where else are limits set?
To be fair, bali's kernel config contains some exotic bits:
maxusers 0
# bump max datasize
options MAXDSIZ="(1024*1024*1024)"
options MAXSSIZ="(1024*1024*1024)"
options DFLDSIZ="(1024*1024*1024)"
... and to be fair, I tried setting a user to the default login class on
one box just to be sure, but I was still receiving the same limitations,
where the default login class sets everything to unlimited ...
*throws up hands in frustration*
Any advice? Wisdom?
Thanks in advance!
Sincerely,
-danny
--
http://dannyman.toldme.com/
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