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OPTIM: channel: reorganize struct members to improve cache efficiency

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Now that the buffer is moved out of the channel, it is possible to move
the pointer earlier in the struct and reorder some fields. This new
ordering improves overall performance by 2%, mainly saved in the HTTP
parsers and data transfers.
This commit is contained in:
Willy Tarreau 2012-10-13 10:05:56 +02:00
parent 9b28e03b66
commit 0a8535fec8
1 changed files with 10 additions and 10 deletions
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20
include/types/channel.h
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@ -172,21 +172,21 @@ struct session;
struct channel {
unsigned int flags; /* CF_* */
unsigned int analysers; /* bit field indicating what to do on the channel */
struct buffer *buf; /* buffer attached to the channel, always present but may move */
struct stream_interface *cons; /* consumer attached to this channel */
struct stream_interface *prod; /* producer attached to this channel */
struct pipe *pipe; /* non-NULL only when data present */
unsigned int to_forward; /* number of bytes to forward after out without a wake-up */
unsigned char xfer_large; /* number of consecutive large xfers */
unsigned char xfer_small; /* number of consecutive small xfers */
unsigned long long total; /* total data read */
int rex; /* expiration date for a read, in ticks */
int wex; /* expiration date for a write or connect, in ticks */
int rto; /* read timeout, in ticks */
int wto; /* write timeout, in ticks */
unsigned int to_forward; /* number of bytes to forward after out without a wake-up */
unsigned int analysers; /* bit field indicating what to do on the channel */
int analyse_exp; /* expiration date for current analysers (if set) */
void (*hijacker)(struct session *, struct channel *); /* alternative content producer */
unsigned char xfer_large; /* number of consecutive large xfers */
unsigned char xfer_small; /* number of consecutive small xfers */
unsigned long long total; /* total data read */
struct stream_interface *prod; /* producer attached to this channel */
struct stream_interface *cons; /* consumer attached to this channel */
struct pipe *pipe; /* non-NULL only when data present */
struct buffer *buf; /* buffer attached to the channel, always present but may move */
int analyse_exp; /* expiration date for current analysers (if set) */
};