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. 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 -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
