On Sat, May 27, 2006 at 02:10:17PM -0700, Jesse Brandeburg wrote:
> What kind of poor performance? what test? please send the output of
> ethtool -e ethX and ethtool -S ethX after you've been having problems.
I first noticed the problem (slow speed) when pinging sites. I then
noticed that the problem occured on normal ssh sessions and ftp/http
downloads as well. I have a spare pcmcia card that I am using on the
same laptop so I have something to compare it against. In all the
readings below, eth0 is the builtin Intel 82573L (PCI-Express) card and
eth2 is a pcmcia D-link card (8139too driver).
You can see below the ping times varying randomly through eth0. Compare
these with the ping times through eth2 (at the bottom). Also there are
some collisions in the ethtool -S output here (I am on a 10/100 hub), I
see the same performance using a switch as well.
I am not subscribed to the list, so please cc me on your responses.
Thank you,
Aravind.
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ping via eth0
[EMAIL PROTECTED]:~# ping www.google.com
PING www.l.google.com (66.102.7.99): 56 data bytes
64 bytes from 66.102.7.99: icmp_seq=0 ttl=239 time=135.0 ms
64 bytes from 66.102.7.99: icmp_seq=1 ttl=239 time=601.3 ms
64 bytes from 66.102.7.99: icmp_seq=2 ttl=239 time=133.2 ms
64 bytes from 66.102.7.99: icmp_seq=3 ttl=239 time=904.8 ms
64 bytes from 66.102.7.99: icmp_seq=4 ttl=239 time=131.3 ms
64 bytes from 66.102.7.99: icmp_seq=5 ttl=239 time=1001.3 ms
64 bytes from 66.102.7.99: icmp_seq=6 ttl=239 time=129.4 ms
64 bytes from 66.102.7.99: icmp_seq=7 ttl=239 time=1001.5 ms
64 bytes from 66.102.7.99: icmp_seq=8 ttl=239 time=127.5 ms
64 bytes from 66.102.7.99: icmp_seq=9 ttl=239 time=1001.0 ms
64 bytes from 66.102.7.99: icmp_seq=10 ttl=239 time=125.2 ms
64 bytes from 66.102.7.99: icmp_seq=11 ttl=239 time=19.8 ms
64 bytes from 66.102.7.99: icmp_seq=12 ttl=239 time=123.2 ms
64 bytes from 66.102.7.99: icmp_seq=13 ttl=239 time=1001.3 ms
64 bytes from 66.102.7.99: icmp_seq=14 ttl=239 time=121.4 ms
64 bytes from 66.102.7.99: icmp_seq=15 ttl=239 time=1001.4 ms
64 bytes from 66.102.7.99: icmp_seq=16 ttl=239 time=119.5 ms
--- www.l.google.com ping statistics ---
17 packets transmitted, 17 packets received, 0% packet loss
round-trip min/avg/max = 19.8/451.6/1001.5 ms
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[EMAIL PROTECTED]:~# ethtool -e eth0
Offset Values
------ ------
0x0000 00 0a e4 3f a5 da 30 0b b2 ff 51 00 ff ff ff ff
0x0010 53 00 03 02 6b 02 7e 20 aa 17 9a 10 86 80 df 80
0x0020 00 00 00 20 54 7e 00 00 14 00 da 00 04 00 00 27
0x0030 c9 6c 50 31 3e 07 0b 04 8b 29 00 00 00 f0 02 0f
0x0040 08 10 00 00 04 0f ff 7f 01 4d ff ff ff ff ff ff
0x0050 14 00 1d 00 14 00 1d 00 af aa 1e 00 00 00 1d 00
0x0060 00 01 00 40 1f 12 07 40 ff ff ff ff ff ff ff ff
0x0070 ff ff ff ff ff ff ff ff ff ff ff ff ff ff 73 79
[EMAIL PROTECTED]:~# ethtool -S eth0
NIC statistics:
rx_packets: 1757
tx_packets: 1995
rx_bytes: 657421
tx_bytes: 228828
rx_errors: 0
tx_errors: 0
tx_dropped: 0
multicast: 0
collisions: 13
rx_length_errors: 0
rx_over_errors: 0
rx_crc_errors: 0
rx_frame_errors: 0
rx_no_buffer_count: 0
rx_missed_errors: 0
tx_aborted_errors: 0
tx_carrier_errors: 0
tx_fifo_errors: 0
tx_heartbeat_errors: 0
tx_window_errors: 0
tx_abort_late_coll: 0
tx_deferred_ok: 27
tx_single_coll_ok: 2
tx_multi_coll_ok: 5
tx_timeout_count: 0
rx_long_length_errors: 0
rx_short_length_errors: 0
rx_align_errors: 0
tx_tcp_seg_good: 0
tx_tcp_seg_failed: 0
rx_flow_control_xon: 0
rx_flow_control_xoff: 0
tx_flow_control_xon: 0
tx_flow_control_xoff: 0
rx_long_byte_count: 657421
rx_csum_offload_good: 1709
rx_csum_offload_errors: 0
rx_header_split: 1433
alloc_rx_buff_failed: 0
[EMAIL PROTECTED]:~#
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The same ping using eth2
[EMAIL PROTECTED]:~# ping www.google.com
PING www.l.google.com (66.102.7.99): 56 data bytes
64 bytes from 66.102.7.99: icmp_seq=0 ttl=239 time=16.3 ms
64 bytes from 66.102.7.99: icmp_seq=1 ttl=239 time=15.2 ms
64 bytes from 66.102.7.99: icmp_seq=2 ttl=239 time=14.8 ms
64 bytes from 66.102.7.99: icmp_seq=3 ttl=239 time=15.1 ms
64 bytes from 66.102.7.99: icmp_seq=4 ttl=239 time=16.6 ms
64 bytes from 66.102.7.99: icmp_seq=5 ttl=239 time=15.8 ms
64 bytes from 66.102.7.99: icmp_seq=6 ttl=239 time=14.9 ms
64 bytes from 66.102.7.99: icmp_seq=7 ttl=239 time=14.7 ms
64 bytes from 66.102.7.99: icmp_seq=8 ttl=239 time=14.6 ms
--- www.l.google.com ping statistics ---
9 packets transmitted, 9 packets received, 0% packet loss
round-trip min/avg/max = 14.6/15.3/16.6 ms
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