* Old SDR IB HBA
@ 2012-05-15 19:16 Alexey Shvetsov
[not found] ` <d004e56b0a274ba55134840a93060de4-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Alexey Shvetsov @ 2012-05-15 19:16 UTC (permalink / raw)
To: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Hi all!
Is it normal that kenrnel reports 8.5G speed on old SDR mellanox HBA?
c-2-1 1 # ibstatus
Infiniband device 'mthca0' port 1 status:
default gid: fe80:0000:0000:0000:0002:c902:0023:05a1
base lid: 0x2f
sm lid: 0xf
state: 4: ACTIVE
phys state: 5: LinkUp
rate: 8.5 Gb/sec (4X)
link_layer: InfiniBand
c-2-1 1 # ibv_devinfo
hca_id: mthca0
transport: InfiniBand (0)
fw_ver: 1.0.800
node_guid: 0002:c902:0023:05a0
sys_image_guid: 0002:c902:0023:05a3
vendor_id: 0x02c9
vendor_part_id: 25204
hw_ver: 0xA0
board_id: MT_03B0120001
phys_port_cnt: 1
port: 1
state: PORT_ACTIVE (4)
max_mtu: 2048 (4)
active_mtu: 2048 (4)
sm_lid: 15
port_lid: 47
port_lmc: 0x00
link_layer: IB
--
Best Regards,
Alexey 'Alexxy' Shvetsov
Petersburg Nuclear Physics Institute, NRC Kurchatov Institute,
Gatchina, Russia
Department of Molecular and Radiation Biophysics
Gentoo Team Ru
Gentoo Linux Dev
mailto:alexxyum-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
mailto:alexxy-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org
mailto:alexxy-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org
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* Re: Old SDR IB HBA
[not found] ` <d004e56b0a274ba55134840a93060de4-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org>
@ 2012-05-15 19:27 ` Or Gerlitz
[not found] ` <CAJZOPZL0MuNnjP8=CyQqL+GC7RDyMGTt_ng+iYbFDOpdrv3ZWA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Or Gerlitz @ 2012-05-15 19:27 UTC (permalink / raw)
To: Alexey Shvetsov; +Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA
On Tue, May 15, 2012 at 10:16 PM, Alexey Shvetsov <alexxy-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org> wrote:
> Is it normal that kenrnel reports 8.5G speed on old SDR mellanox HBA?
yes, there used to be a bug that could cause that, what kernel
produced this output?
> c-2-1 1 # ibstatus
> Infiniband device 'mthca0' port 1 status:
> default gid: fe80:0000:0000:0000:0002:c902:0023:05a1
> base lid: 0x2f
> sm lid: 0xf
> state: 4: ACTIVE
> phys state: 5: LinkUp
> rate: 8.5 Gb/sec (4X)
> link_layer: InfiniBand
Or.
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* Re: Old SDR IB HBA
[not found] ` <CAJZOPZL0MuNnjP8=CyQqL+GC7RDyMGTt_ng+iYbFDOpdrv3ZWA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
@ 2012-05-15 19:31 ` Alexey Shvetsov
[not found] ` <a5e77072fa7ebef170d9558adaac4ca8-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Alexey Shvetsov @ 2012-05-15 19:31 UTC (permalink / raw)
To: Or Gerlitz; +Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA
Affected kernel version 3.3
c-2-1 1 # uname -a
Linux c-2-1.local 3.3.4-gentoo #2 SMP Thu May 3 16:08:32 MSK 2012
x86_64 Dual Core AMD Opteron(tm) Processor 280 AuthenticAMD GNU/Linux
PS It doesnt have patches related to ib so its like vanilla =D
btw seems like ibv_devinfo reports correct speed
c-2-1 1 # ibv_devinfo -v
hca_id: mthca0
transport: InfiniBand (0)
fw_ver: 1.0.800
node_guid: 0002:c902:0023:05a0
sys_image_guid: 0002:c902:0023:05a3
vendor_id: 0x02c9
vendor_part_id: 25204
hw_ver: 0xA0
board_id: MT_03B0120001
phys_port_cnt: 1
max_mr_size: 0xffffffffffffffff
page_size_cap: 0xfffff000
max_qp: 64512
max_qp_wr: 16384
device_cap_flags: 0x00001c76
max_sge: 27
max_sge_rd: 0
max_cq: 65408
max_cqe: 131071
max_mr: 131056
max_pd: 32764
max_qp_rd_atom: 4
max_ee_rd_atom: 0
max_res_rd_atom: 258048
max_qp_init_rd_atom: 128
max_ee_init_rd_atom: 0
atomic_cap: ATOMIC_HCA (1)
max_ee: 0
max_rdd: 0
max_mw: 0
max_raw_ipv6_qp: 0
max_raw_ethy_qp: 0
max_mcast_grp: 8192
max_mcast_qp_attach: 56
max_total_mcast_qp_attach: 458752
max_ah: 0
max_fmr: 0
max_srq: 960
max_srq_wr: 16384
max_srq_sge: 27
max_pkeys: 64
local_ca_ack_delay: 15
port: 1
state: PORT_ACTIVE (4)
max_mtu: 2048 (4)
active_mtu: 2048 (4)
sm_lid: 15
port_lid: 47
port_lmc: 0x00
link_layer: IB
max_msg_sz: 0x80000000
port_cap_flags: 0x02510a68
max_vl_num: 4 (3)
bad_pkey_cntr: 0x0
qkey_viol_cntr: 0x0
sm_sl: 0
pkey_tbl_len: 64
gid_tbl_len: 32
subnet_timeout: 18
init_type_reply: 0
active_width: 4X (2)
active_speed: 2.5 Gbps (1)
phys_state: LINK_UP (5)
GID[ 0]:
fe80:0000:0000:0000:0002:c902:0023:05a1
Or Gerlitz писал 2012-05-15 22:27:
> On Tue, May 15, 2012 at 10:16 PM, Alexey Shvetsov <alexxy-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org>
> wrote:
>
>> Is it normal that kenrnel reports 8.5G speed on old SDR mellanox
>> HBA?
>
> yes, there used to be a bug that could cause that, what kernel
> produced this output?
>
>> c-2-1 1 # ibstatus
>> Infiniband device 'mthca0' port 1 status:
>> default gid: fe80:0000:0000:0000:0002:c902:0023:05a1
>> base lid: 0x2f
>> sm lid: 0xf
>> state: 4: ACTIVE
>> phys state: 5: LinkUp
>> rate: 8.5 Gb/sec (4X)
>> link_layer: InfiniBand
>
> Or.
> --
> To unsubscribe from this list: send the line "unsubscribe linux-rdma"
> in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
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--
Best Regards,
Alexey 'Alexxy' Shvetsov
Petersburg Nuclear Physics Institute, NRC Kurchatov Institute,
Gatchina, Russia
Department of Molecular and Radiation Biophysics
Gentoo Team Ru
Gentoo Linux Dev
mailto:alexxyum-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
mailto:alexxy-aBrp7R+bbdUdnm+yROfE0A@public.gmane.org
mailto:alexxy-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Old SDR IB HBA
[not found] ` <a5e77072fa7ebef170d9558adaac4ca8-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org>
@ 2012-05-16 13:43 ` Or Gerlitz
0 siblings, 0 replies; 4+ messages in thread
From: Or Gerlitz @ 2012-05-16 13:43 UTC (permalink / raw)
To: Alexey Shvetsov; +Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA
On 5/15/2012 10:31 PM, Alexey Shvetsov wrote:
> Affected kernel version 3.3
>
yep, there's a bug in the IB core sysfs code which is fixed in 3.4 that
can cause that 8.5Gbs to be displayed...
The bug was introduced in 3.2 or 3.3 and fixed in 3.4, see commit
e9319b0cb00d4d68792fdae37e81e316cb632cb9 "IB/core: Fix SDR rates in
sysfs" and some later commits to that file
Or.
Or.
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2012-05-15 19:16 Old SDR IB HBA Alexey Shvetsov
[not found] ` <d004e56b0a274ba55134840a93060de4-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org>
2012-05-15 19:27 ` Or Gerlitz
[not found] ` <CAJZOPZL0MuNnjP8=CyQqL+GC7RDyMGTt_ng+iYbFDOpdrv3ZWA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-05-15 19:31 ` Alexey Shvetsov
[not found] ` <a5e77072fa7ebef170d9558adaac4ca8-heEE5zn7HfaV8fSEjHp0FA@public.gmane.org>
2012-05-16 13:43 ` Or Gerlitz
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