Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
please look at this:
kernel: e1000: eth1: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex
ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:03:47:E0:EB:B1
inet addr:10.0.0.3 Bcast:10.0.0.255 Mask:255.255.255.0
inet6 addr: fe80::203:47ff:fee0:ebb1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:100946479 errors:0 dropped:0 overruns:0 frame:0
TX packets:65332968 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3224251004 (3074.8 Mb) TX bytes:3481223682 (3319.9 Mb)
Memory:f8240000-f8260000
./iperf -c 10.0.0.2
------------------------------------------------------------
Client connecting to 10.0.0.2, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[ 3] local 10.0.0.3 port 32788 connected with 10.0.0.2 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 1.02 GBytes 872 Mbits/sec
It´s obvious that it is a gbit link!!!
drbdsetup /dev/drbd0 show
Lower device: 253:00 (dm-0)
Meta device: 08:03 (sda3)
Meta index: 0
Disk options:
on-io-error = panic
Local address: 10.0.0.3:7788
Remote address: 10.0.0.2:7788
Wire protocol: A
Net options:
timeout = 3.0 sec
connect-int = 5 sec
ping-int = 5 sec
max-epoch-size = 2048 (default)
max-buffers = 2048 (default)
sndbuf-size = 131070 (default)
ko-count = 0 (default)
syncer options:
rate = 153600 KB/sec
group = 1
al-extents = 257
system: suse sles9, drbd 0.7.14
And now, any ideas?
cheers
Stefan
-------- Original Message --------
Subject: Re: [DRBD-user] bad sync performance ! (01-Dez-2005 22:46)
From: Lars Ellenberg <Lars.Ellenberg at linbit.com>
To: drbd-user at lists.linbit.com
> / 2005-12-01 20:13:29 +0000
> \ Stefan Kerkemeier:
> > Hi,
> >
> > I use gbit fibre nics(e1000), private node connection (directly linked) but
> > the DRBD sync performance is really bad (see sync speed below)!
> >
> > syncer {
> > rate 150M;
> > group 1;
> > al-extents 257;
> > }
> >
> > [======>.............] sync'ed: 34.8% (77768/119260)M
> > finish: 1:45:20 speed: 12,572 (11,944) K/sec
> >
> > I have validated the connection speed with iperf so there must be a
> > specific drbd problem!
> >
> > btw.: the hdd (raid5) perform very well (>90Mbyte/s)
> >
> > Any hints ?
>
> ethtool eth0
> (or whatever).
>
> sorry, 12.5 MByte per second is too close to 100MBit "FastEthernet".
> so I won't believe you have indeed a GBit link unless you prove it.
>
> cheers
>
> --
> : Lars Ellenberg Tel +43-1-8178292-0 :
> : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :
> : Schoenbrunner Str. 244, A-1120 Vienna/Europe http://www.linbit.com :
> __
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>
To: Lars.Ellenberg at linbit.com
Cc: drbd-user at lists.linbit.com