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| author | Eric Dumazet <edumazet@google.com> | 2015-11-18 06:30:57 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-18 16:17:40 -0500 |
| commit | b59768c6b4fc1c95b7679f2cfa9c13d8cc70ab46 (patch) | |
| tree | 6c4e526fb51bd5d642747a9a80190b417a389184 /drivers/char/misc.c | |
| parent | 44fb6fbbac23ee304d113ceb5eed45666d8a32f9 (diff) | |
| download | op-kernel-dev-b59768c6b4fc1c95b7679f2cfa9c13d8cc70ab46.zip op-kernel-dev-b59768c6b4fc1c95b7679f2cfa9c13d8cc70ab46.tar.gz | |
bnx2x: remove bnx2x_low_latency_recv() support
Switch to native NAPI polling, as this reduces overhead and complexity.
Normal path is faster, since one cmpxchg() is not anymore requested,
and busy polling with the NAPI polling has same performance.
Tested:
lpk50:~# cat /proc/sys/net/core/busy_read
70
lpk50:~# nstat >/dev/null;./netperf -H lpk55 -t TCP_RR;nstat
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to lpk55.prod.google.com () port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec
16384 87380 1 1 10.00 40095.07
16384 87380
IpInReceives 401062 0.0
IpInDelivers 401062 0.0
IpOutRequests 401079 0.0
TcpActiveOpens 7 0.0
TcpPassiveOpens 3 0.0
TcpAttemptFails 3 0.0
TcpEstabResets 5 0.0
TcpInSegs 401036 0.0
TcpOutSegs 401052 0.0
TcpOutRsts 38 0.0
UdpInDatagrams 26 0.0
UdpOutDatagrams 27 0.0
Ip6OutNoRoutes 1 0.0
TcpExtDelayedACKs 1 0.0
TcpExtTCPPrequeued 98 0.0
TcpExtTCPDirectCopyFromPrequeue 98 0.0
TcpExtTCPHPHits 4 0.0
TcpExtTCPHPHitsToUser 98 0.0
TcpExtTCPPureAcks 5 0.0
TcpExtTCPHPAcks 101 0.0
TcpExtTCPAbortOnData 6 0.0
TcpExtBusyPollRxPackets 400832 0.0
TcpExtTCPOrigDataSent 400983 0.0
IpExtInOctets 21273867 0.0
IpExtOutOctets 21261254 0.0
IpExtInNoECTPkts 401064 0.0
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/char/misc.c')
0 files changed, 0 insertions, 0 deletions
