[CentOS] High CPU usage by lftp
JohnS
jses27 at gmail.com
Tue May 12 08:54:57 UTC 2009
On Tue, 2009-05-12 at 08:04 +0000, Rajagopal Swaminathan wrote:
> JohnS <jses27 at ...> writes:
>
> > ---
> > Check out you networking stack. Like NIC Card settings with ethtool and
> > your dns like namserver settings in resolve.conf. If it is getting an
> > address by dhcp sometimes it want pull in the actual real dns servers.
>
> ethtool eth0
>
> spake thus:
>
> Settings for eth0:
> Supported ports: [ TP MII ]
> Supported link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Half 1000baseT/Full
> Supports auto-negotiation: Yes
> Advertised link modes: 10baseT/Half 10baseT/Full
> 100baseT/Half 100baseT/Full
> 1000baseT/Half 1000baseT/Full
> Advertised auto-negotiation: Yes
> Speed: 100Mb/s
> Duplex: Full
> Port: MII
> PHYAD: 0
> Transceiver: internal
> Auto-negotiation: on
> Supports Wake-on: pumbg
> Wake-on: g
> Current message level: 0x00000033 (51)
> Link detected: yes
>
>
> They are reasonably fine. it is a static IP.
>
> > All will get is like a 192.168.0.x from the modem/router. Ifconfig ethX
> > will show you the amount of packets dropped also. Possibly a driver
> > issue with your nic? Could be many things you just have to go step by
> > step...
> >
>
> ifconfig eth0
> eth0 Link encap:Ethernet HWaddr 00:16:E6:96:CD:A8
> inet addr:192.168.2.220 Bcast:192.168.2.255 Mask:255.255.255.0
> inet6 addr: fe80::216:e6ff:fe96:cda8/64 Scope:Link
> UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
> RX packets:3434000 errors:0 dropped:0 overruns:0 frame:0
> TX packets:1879546 errors:0 dropped:0 overruns:0 carrier:0
> collisions:0 txqueuelen:1000
> RX bytes:2928267020 (2.7 GiB) TX bytes:550552465 (525.0 MiB)
> Interrupt:177 Base address:0xe000
>
>
> But then yum install/update etc gives me reasonable speeds in the range of
> 100-120 KBytes/second and our network load is that much usually. 15-20Kbytes is
> ridiculous
>
> We have a DNS server (an AD server)
>
> Is it that something that wget puts out in the network that is not liked by our
> firewall?
---
That is possible and it could be Bandwidth Throttling the connection
much like ISPs do to peer to peer networks.
There is a wget for windows. Maybe you could try that and compare the
difference.
http://unxutils.sourceforge.net/
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