[openib-general] why sdp connections cost so much memory

[zhu shi song]

Have you resolved the problem?
zhu

--- "Michael S. Tsirkin" <mst at mellanox.co.il> wrote:

> Yes, I have reproduced the connection refusal
> problem and I am looking into it.
> Thanks!
> 
> MST
> 
> Quoting r. zhu shi song <zhushisongzhu at yahoo.com>:
> Subject: Re: why sdp connections cost so much memory
> 
> I haven't met kernel crashes using rc2.  But there
> always occurred connection refusal when max
> concurrent
> connections set above 200. All is right when max
> concurrent connections is set to below 200.  ( If
> using TCP to take the same test, there is no
> problem.)
> (1)
> This is ApacheBench, Version 2.0.41-dev <$Revision:
> 1.141 $> apache-2.0
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd,
> http://www.zeustech.net/
> Copyright (c) 1998-2002 The Apache Software
> Foundation, http://www.apache.org/
> 
> Benchmarking www.google.com [through
> 193.12.10.14:3129] (be patient)
> Completed 100 requests
> Completed 200 requests
> apr_recv: Connection refused (111)
> Total of 257 requests completed
> (2)
> This is ApacheBench, Version 2.0.41-dev <$Revision:
> 1.141 $> apache-2.0
> Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd,
> http://www.zeustech.net/
> Copyright (c) 1998-2002 The Apache Software
> Foundation, http://www.apache.org/
> 
> Benchmarking www.google.com [through
> 193.12.10.14:3129] (be patient)
> Completed 100 requests
> Completed 200 requests
> apr_recv: Connection refused (111)
> Total of 256 requests completed
> [root at IB-TEST squid.test]#
> 
> zhu
> 
> 
> 
> 
> --- "Michael S. Tsirkin" <mst at mellanox.co.il> wrote:
> 
> > Quoting r. zhu shi song <zhushisongzhu at yahoo.com>:
> > > --- "Michael S. Tsirkin" <mst at mellanox.co.il>
> > wrote:
> > > 
> > > > Quoting r. zhu shi song
> > <zhushisongzhu at yahoo.com>:
> > > > > (3) one time linux kernel on the client
> > crashed. I
> > > > > copy the output from the screen.
> > > > > Process sdp (pid:4059, threadinfo
> > 0000010036384000
> > > > > task 000001003ea10030)
> > > > > Call
> > > > >
> > > >
> >
> Trace:<ffffffffa0205011>{:ib_sdp:sdp_destroy_workto}
> > > > > <ffffffffa02041ae>
> {:ib_sdp:sdp_destroy_qp+77}
> > > > >
> > > >
> > >
> >
>
<ffffffffa02044da>{:ib_sdp:sdp_destruct+279}<ffffffff802a42d2>{sk_free+28}
> > > > >
> > > >
> > >
> >
>
<ffffffff80146e1e>{worker_thread+419}<ffffffff801333c8>{default_wake_function+0}
> > > > >
> > > >
> > >
> >
>
<ffffffff801333c8>{default_wake_function+0}<ffffffff8014aabc>{keventd_create_kthread+0}
> > > > >
> > > >
> > >
> >
>
<ffffffff80146c76>{worker_thread+0}<ffffffff8014aabc>{keventd_create_kthread+0}
> > > > >
> > > >
> > >
> >
>
<ffffffff8014aa93>{kthread+200}<ffffffff80110e17>{child_rip+8}
> > > > >
> > > >
> > >
> >
>
<ffffffff8014aabc>{keventd_create_kthread+0}<ffffffff8014a9cb>{kthread+0}<ffffffff80110e0f>{child_rip+0}
> > > > > Code:8b 40 04 41 39 c6 89 44 24 0c 7d 3b 45
> 31
> > ff
> > > > 45
> > > > > 31 ed 4c 89
> > > > >
> > > >
> > >
> >
>
RIP:<ffffffffa0208437>{:ib_sdp:sdp_recv_completion+127}RSP<0000010036385dc8>
> > > > > CR2:0000000000000004
> > > > > <0>kernel panic-not syncing:Oops
> > > > > 
> > > > > zhu
> > > > 
> > > > Hmm, the stack dump does not match my sources.
> > Is
> > > > this OFED rc1?
> > > > Could you send me the sdp_main.o and
> sdp_main.c
> > > > files from your system please?
> > 
> > ---
> > 
> > > Subject: Re: why sdp connections cost so much
> > memory
> > > 
> > > please see the attachment.
> > > zhu
> > 
> > Ugh, so its crashing inside sdp_bcopy ...
> > 
> > By the way, could you please re-test with OFED
> rc2?
> > We've solved a couple of bugs there ...
> > 
> > If this still crashes, could you please post the
> > whole
> > sdp directory, with .o and .c files?
> > 
> > Thanks,
> > 
> > -- 
> > MST
> > 
> 
> 
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> -- 
> MST
> 


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