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| author | Gabor Juhos <juhosg@openwrt.org> | 2011-05-08 16:32:53 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2011-05-08 16:32:53 +0000 |
| commit | c7cf7f306b7cc988b827336b934ba20791db856d (patch) | |
| tree | deaf8f35860447668c9c5e14ed8bc7f42daf318e /package/broadcom-diag | |
| parent | 2d8d374be2a68f7445e08e6bac48d64e4abc77b2 (diff) | |
| download | upstream-c7cf7f306b7cc988b827336b934ba20791db856d.tar.gz upstream-c7cf7f306b7cc988b827336b934ba20791db856d.tar.bz2 upstream-c7cf7f306b7cc988b827336b934ba20791db856d.zip | |
ar71xx: ag71xx: make switch register access atomic
Reading of the PHY registers occasionally returns with bogus values
under heavy load. This misleads the PHY driver and thus causes false
link/speed change notifications which leads to performance loss.
This is easily noticable during an iperf session:
...
[ 3] 52.0-53.0 sec 11.3 MBytes 94.4 Mbits/sec
[ 3] 53.0-54.0 sec 11.4 MBytes 95.4 Mbits/sec
eth1: link down
br-lan: port 2(eth1) entering forwarding state
eth1: link up (100Mbps/Full duplex)
br-lan: port 2(eth1) entering forwarding state
br-lan: port 2(eth1) entering forwarding state
[ 3] 54.0-55.0 sec 6.75 MBytes 56.6 Mbits/sec
[ 3] 55.0-56.0 sec 0.00 Bytes 0.00 bits/sec
[ 3] 56.0-57.0 sec 10.5 MBytes 88.1 Mbits/sec
...
[ 3] 169.0-170.0 sec 11.4 MBytes 95.4 Mbits/sec
[ 3] 170.0-171.0 sec 11.4 MBytes 95.4 Mbits/sec
eth1: link up (10Mbps/Half duplex)
[ 3] 171.0-172.0 sec 7.63 MBytes 64.0 Mbits/sec
[ 3] 172.0-173.0 sec 9.38 MBytes 78.6 Mbits/sec
eth1: link up (100Mbps/Full duplex)
[ 3] 173.0-174.0 sec 11.3 MBytes 94.4 Mbits/sec
[ 3] 174.0-175.0 sec 11.4 MBytes 95.4 Mbits/sec
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26856 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'package/broadcom-diag')
0 files changed, 0 insertions, 0 deletions