diff options
| author | Frank Pavlic <fpavlic@de.ibm.com> | 2006-02-07 17:04:36 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2006-02-17 16:16:39 -0500 |
| commit | 0d613a27cc753bfacd20e6eaa2183bb7fef4c76e (patch) | |
| tree | 670fc8e8a703874c2c7b8626fb646679389fce1b /drivers/s390/net/lcs.h | |
| parent | ca5b0ec8ae9f11c85d1f27b19f182a054303f324 (diff) | |
[PATCH] s390: lcs performance enhancements
[patch 1/2] s390: lcs performance enhancements
From: Klaus Wacker <kdwacker@de.ibm.com>
- When flood pinging (with large packet size) an LCS device,
about 90 % of all packets are dropped by driver.
- increased number of lcs IO buffers to 32.
- use netif_stop_queue/netif_wake_queue in lcs_start_xmit routine
- don't lock the whole xmit routine but just the piece of code where
tx_buffer is touched.
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
diffstat:
lcs.c | 31 +++++++++++++++++--------------
lcs.h | 2 +-
2 files changed, 18 insertions(+), 15 deletions(-)
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/s390/net/lcs.h')
| -rw-r--r-- | drivers/s390/net/lcs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/net/lcs.h b/drivers/s390/net/lcs.h index 08e60ad43916..2fad5e40c2e4 100644 --- a/drivers/s390/net/lcs.h +++ b/drivers/s390/net/lcs.h @@ -95,7 +95,7 @@ do { \ */ #define LCS_ILLEGAL_OFFSET 0xffff #define LCS_IOBUFFERSIZE 0x5000 -#define LCS_NUM_BUFFS 8 /* needs to be power of 2 */ +#define LCS_NUM_BUFFS 32 /* needs to be power of 2 */ #define LCS_MAC_LENGTH 6 #define LCS_INVALID_PORT_NO -1 #define LCS_LANCMD_TIMEOUT_DEFAULT 5 |