Re: 1M routes or 1M arp entries

[Stuart Henderson]

On 2017/08/14 16:48, Simon Mages wrote:
> Hi,
> 
> you may want to take a look into /etc/login.conf
> login.conf(5), cap_mkdb(1)

I wouldn't normally recommend cap_mkdb for the login.conf file, it's too
easy to forget to update the db after making a change. I'd just edit the
text file.

You will need to fully logout for changes to take effect (with ssh
multiplexing, the master needs to exit; with X, you need a new session).

Re: 1M routes or 1M arp entries

[Hrvoje Popovski]

On 14.8.2017. 16:48, Simon Mages wrote:
> Hi,
> 
> you may want to take a look into /etc/login.conf
> login.conf(5), cap_mkdb(1)
> 
> In this file you can fiddle with you limit maxima
> for login classes.
> 
> BR
> Simon
> 

Thank you, i will do that ...

Re: 1M routes or 1M arp entries

[Simon Mages]

Hi,

you may want to take a look into /etc/login.conf
login.conf(5), cap_mkdb(1)

In this file you can fiddle with you limit maxima
for login classes.

BR
Simon


2017-08-14 16:28 GMT+02:00, Hrvoje Popovski :
> On 14.8.2017. 16:03, Alexander Bluhm wrote:
>> On Mon, Aug 14, 2017 at 03:52:56PM +0200, Hrvoje Popovski wrote:
>>> # netstat -rnf inet
>>> netstat: Cannot allocate memory
>>
>> Have you tried to increase ulimit -d ?
>
> it seems that i can decrease it but not increase it, or i don't know how
> to do it properly :)
>
> # ulimit -d
> 33554432
>
> # ulimit -d 33554433
>
> # ulimit -d
> 33554432
>
>

Re: 1M routes or 1M arp entries

[Hrvoje Popovski]

On 14.8.2017. 16:03, Alexander Bluhm wrote:
> On Mon, Aug 14, 2017 at 03:52:56PM +0200, Hrvoje Popovski wrote:
>> # netstat -rnf inet
>> netstat: Cannot allocate memory
> 
> Have you tried to increase ulimit -d ?

it seems that i can decrease it but not increase it, or i don't know how
to do it properly :)

# ulimit -d
33554432

# ulimit -d 33554433

# ulimit -d
33554432

Re: 1M routes or 1M arp entries

[Alexander Bluhm]

On Mon, Aug 14, 2017 at 03:52:56PM +0200, Hrvoje Popovski wrote:
> # netstat -rnf inet
> netstat: Cannot allocate memory

Have you tried to increase ulimit -d ?

bluhm

1M routes or 1M arp entries

[Hrvoje Popovski]

Hi all,

when openbsd imports cca 1M routes or more and if i want to see them
with "netstat -rn" i'm getting "Cannot allocate memory". bgpd can see
all routes. i don't think that this is real problem but full bgp table
is cca 700K routes.


# bgpctl show ip bgp mem
RDE memory statistics
   1245184 IPv4 unicast network entries using 47.5M of memory
   2490368 rib entries using 152M of memory
   2490368 prefix entries using 152M of memory
 1 BGP path attribute entries using 120B of memory
 1 BGP AS-PATH attribute entries using 37B of memory,
   and holding 1 references
 0 BGP attributes entries using 0B of memory
   and holding 0 references
 0 BGP attributes using 0B of memory
RIB using 352M of memory

# bgpctl show ip bgp | wc -l
 1245188

# netstat -rnf inet
netstat: Cannot allocate memory


same happens with arp. if cca 1M arp entries are injected with "arp" and
"netstat -rn" i'm getting "Cannot allocate memory". of course that this
is extremely ridiculous example, but i would be good if i can a least
delete arp entries.


# vmstat -m | egrep "Name|arp"
NameSize Requests FailInUse Pgreq Pgrel Npage Hiwat Minpg
Maxpg Idle
arp   56  14819030   983053 13950   104 13846 13846 0
 80

# arp -an
HostEthernet AddressNetif ExpireFlags
arp: malloc: Cannot allocate memory

# arp -ad
arp: malloc: Cannot allocate memory

# netstat -rnf inet
netstat: Cannot allocate memory