slow data transfer over nfs ... is it fedora?
Niilo Kajander
nk at kajander.fi
Fri Dec 5 12:18:10 UTC 2003
On Fri, 2003-12-05 at 04:33, Harry Putnam wrote:
> Samuel Flory <sflory at rackable.com> writes:
>
> > Harry Putnam wrote:
> >> I lack much experience with nfs but I suspect I should be seeing much
> >> better transfer rates here. Wondering if a few posters could post a
> >> timed transfer of know amount of data
> >> This is from a rh9 to yarrow (fully updated) I'll show exports file
> >> at the end:
> >> root # du -sh $rea/News/agent/nntp/enews*
> >> 169M /home/reader/News/agent/nntp/enews.newsguy.com
> >> root # time cp -a $rea/News/agent/nntp/enews*/ /EXP_root
> >> real 12m26.120s
> >> user 0m0.340s
> >> sys 0m13.990s
> >> So 169MB in 12 1/2 minutes.
> >> cat /etc/exports:
> >> / reader(rw,async,insecure_locks,no_root_squash)
> >> /home reader(rw,async,insecure_locks,no_root_squash)
> >> /var reader(rw,async,insecure_locks,no_root_squash)
> >> /mnt/exp reader(rw,async,insecure_locks,no_root_squash)
> >> /usr reader(rw,async,insecure_locks,no_root_squash)
> >> /tmp reader(rw,async,insecure_locks,no_root_squash)
> >>
> >
>
> First do you have example speeds?
>
> > What does /proc/mount say?
> Nothing here:
> cat /proc/mount No such file or directory
> > What does "mii-tool eth0" or "ethtool
> > eth0" say? Are you dropping packets? (ifconfig and ping )
>
> root # mii-tool
> eth0: negotiated 100baseTx-HD, link ok
> eth1: no link
> ==================================
> root # ethtool eth0
> Settings for eth0:
> Supported ports: [ TP MII ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> Supports auto-negotiation: Yes
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> Advertised auto-negotiation: Yes
> Speed: 100Mb/s
> Duplex: Half
Half-duplex isn't normal to my eyes (;
> Port: Twisted Pair
> PHYAD: 1
> Transceiver: internal
> Auto-negotiation: on
> Supports Wake-on: puag
> Wake-on: g
> Link detected: yes
>
> ifconfig reading taken during write across nfs:
> root # ifconfig eth0
> eth0 Link encap:Ethernet HWaddr 00:03:47:FA:4B:13
> inet addr:192.168.0.4 Bcast:192.168.0.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:2023545 errors:50 dropped:0 overruns:0 frame:50
> TX packets:1867748 errors:0 dropped:0 overruns:0 carrier:0
> collisions:6765 txqueuelen:100
> RX bytes:983047766 (937.5 Mb) TX bytes:454217274 (433.1 Mb)
> Interrupt:11 Base address:0xdf00 Memory:ff9fc000-ff9fc038
>
> To my inexperienced eye those look normal.. are they?
--
Niilo Kajander <nk at kajander.fi>
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