On Tue, Apr 14, 2009 at 3:16 PM, Tekale Sharad-FHJN78 <FHJN78@xxxxxxxxxxxx> wrote: > > Hi Pradeep, > >> How much memory do you have actually? > > We have: > 8MB of serial NOR flash > 64MB of NAND flash (512 + 16 byte pages) > 32MB of RAM. > > > As I have mentioned, >> Say I have each port attached to there own bridge, and when I route >> traffic from one host to other, We will not face this behavior. Do you have a panic screenshot or log? Maybe someone better can analyse it? :) > > root@none:/$ brctl addbr br-lan1 > root@none:/$ brctl addif br-lan1 eth0.0 > root@none:/$ brctl stp br-lan1 on > > root@none:/$ brctl addbr br-lan2 > root@none:/$ brctl addif br-lan2 eth0.1 > root@none:/$ brctl stp br-lan2 on > > root@none:/$ brctl show > bridge name bridge id STP enabled interfaces > br-lan1 8000.001570d8d8fd yes eth0.0 > br-lan2 8000.001570d8d8fd yes eth0.1 > > In this case, if I send huge traffic the throughput is decreased but device is not going out of memory. > > Any idea? > > Thanks, > Sharad. > > -----Original Message----- > From: pradeep singh [mailto:pradeep.rautela@xxxxxxxxx] > Sent: Tuesday, April 14, 2009 4:37 AM > To: Tekale Sharad-FHJN78 > Cc: kernelnewbies@xxxxxxxxxxxx > Subject: Re: Out of memory + skbuff_head_cache > > How much memory do you have actually? > > On Tue, Apr 14, 2009 at 2:25 PM, Tekale Sharad-FHJN78 <FHJN78@xxxxxxxxxxxx> wrote: >> >> Hi Pradeep, >> >>>Looks like a possible memory leak. Your interfaces suggest you are using Xen(?). >> We are using OpenWrt on AP. >> >>>Did you add any code? If yes, check for memory leaks, >> I guess there may be leak in Bridge module associated with 2.6.21.5 kernel. >> >> As when we attach the two interface with same bridge, only then we are facing this problem. >> >> Say I have each port attached to there own bridge, and when I route >> traffic from one host to other, We will not face this behavior. >> >> >> Any suggestion on how to debug/solve the problem. >> >> Thanks, >> Sharad. >> >> >> -----Original Message----- >> From: pradeep singh [mailto:pradeep.rautela@xxxxxxxxx] >> Sent: Tuesday, April 14, 2009 2:01 AM >> To: Tekale Sharad-FHJN78 >> Cc: kernelnewbies@xxxxxxxxxxxx >> Subject: Re: Out of memory + skbuff_head_cache >> >> On Tue, Apr 14, 2009 at 8:37 AM, Tekale Sharad-FHJN78 <FHJN78@xxxxxxxxxxxx> wrote: >>> Hi, >>> >>> I'm using linux 2.6.21.5 and our kernel is freeze. >>> >>> The problem I'm facing is, when I create a software bridge using >>> $brctl command. and add two interfaces say, eth0.0 and eth0.1, this way... >>> $brctl addbr br-lan >>> $brctl addif br-lan eth0.0 >>> $brctl addif br-lan eth0.1 >>> >>> When I send traffic from a host connected to one port to host >>> connected at other at or above end 60Mbits/sec , >>> soon all the memory is dried up/consumed and and system crashes. >> >> Looks like a possible memory leak. Your interfaces suggest you are using Xen(?). >> Did you add any code? If yes, check for memory leaks. >> >> HTH >>> >>> Observation: >>> On initial start up: >>> $cat /proc/slabinfo | grep skbuff_head_cache skbuff_head_cache 120 >>> 120 192 20 1 : tunables 120 60 0 : >>> slabdata 6 >>> >>> Before crash: >>> $cat /proc/slabinfo | grep skbuff_head_cache skbuff_head_cache 4260 >>> 4260 192 20 1 : tunables 120 60 0 : >>> slabdata 213 213 0 >>> Can any one help me to refer to some patch or point to some location >>> in code from where memory is failed to deallocate. >>> >>> Thanks, >>> Sharad. >> >> >> >> -- >> Pradeep >> > > > > -- > Pradeep > -- Pradeep -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
