Re: Intel 82576 Gigabit on Debian 7 slow speed.
On 18.12.2015 16:32, Michael Beck wrote:
> Any lost packets?
ifconfig
bond0 Link encap:Ethernet HWaddr
UP BROADCAST RUNNING MASTER MULTICAST MTU:9000 Metric:1
RX packets:654308767 errors:0 dropped:5238 overruns:0 frame:0
TX packets:761897714 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:343017135502 (319.4 GiB) TX bytes:877734258061
(817.4 GiB)
eth0 Link encap:Ethernet HWaddr
UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
RX packets:426388262 errors:0 dropped:0 overruns:0 frame:0
TX packets:504528230 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:201613380511 (187.7 GiB) TX bytes:593461966181
(552.7 GiB)
Memory:fafe0000-fb000000
eth1 Link encap:Ethernet HWaddr
UP BROADCAST RUNNING SLAVE MULTICAST MTU:9000 Metric:1
RX packets:227920505 errors:0 dropped:0 overruns:0 frame:0
TX packets:257369484 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:141403754991 (131.6 GiB) TX bytes:284272291880
(264.7 GiB)
Memory:faf60000-faf80000
I think 5238 dropped packets for several days compared to received
packets is negligible.
> Real real full-duplex (ethtool)?
ethtool -i bond0
driver: bonding
version: 3.7.1
firmware-version: 2
bus-info:
supports-statistics: no
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no
ethtool eth0
Settings for eth0:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: Unknown
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
ethtool eth1
Settings for eth1:
Supported ports: [ TP ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Supported pause frame use: Symmetric
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Advertised pause frame use: Symmetric
Advertised auto-negotiation: Yes
Speed: 1000Mb/s
Duplex: Full
Port: Twisted Pair
PHYAD: 1
Transceiver: internal
Auto-negotiation: on
MDI-X: Unknown
Supports Wake-on: pumbg
Wake-on: g
Current message level: 0x00000007 (7)
drv probe link
Link detected: yes
> What does the (managed?) switch say?
It shows 1Gbit.
> Are the cables okay (cat6?)?
Yes. Cables are new cat6e.
> Which kind of transfer?nfs/cifs/iscsi or raw iperf-test?
I've tried send/receive cifs (samba). Also I've tried sendng file with
pscp using Kitty. Both give same low speed.
NFS or iSCSI isn't used.
iperf -c ip
------------------------------------------------------------
Client connecting to ip, TCP port 5001
TCP window size: 23.5 KByte (default)
------------------------------------------------------------
[ 3] local ip port 36389 connected with ip port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 835 MBytes 700 Mbits/sec
70% of 1Gbit. Is this seems a problem with samba?
iperf -uc 10.10.0.254 -b 1000m
------------------------------------------------------------
Client connecting to ip, UDP port 5001
Sending 1470 byte datagrams
UDP buffer size: 224 KByte (default)
------------------------------------------------------------
[ 3] local ip port 33348 connected with ip port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 966 MBytes 810 Mbits/sec
[ 3] Sent 688757 datagrams
[ 3] WARNING: did not receive ack of last datagram after 10 tries.
dd if=/dev/zero of=test.bin bs=1M count=10000
10000+0 records in
10000+0 records out
10485760000 bytes (10 GB) copied, 24.5841 s, 427 MB/s
dd if=test.bin of=/dev/null bs=1M
10000+0 records in
10000+0 records out
10485760000 bytes (10 GB) copied, 2.24662 s, 4.7 GB/s
Disk is a zfs raid:
zpool create -f -m none -o ashift=12 zfspool raidz2 .... (total 8 x 1TB
+ 8 x 2TB disk in SATA2 supermicro backplane)
zfs set atime=off zfspool
zfs set dedup=off zfspool
zfs create -V 4T zfspool/backup
zfs set compression=lz4 zfspool/backup
mkfs.ext4 -b 4096 -q /dev/zvol/zfspool/backup
Is this samba problem or zfs problem?
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