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Tuning for small packet handling

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- Double the number of descriptors that a single call to send can use
- Quadruple the number of descriptors that can be reclaimed per pass
- only run reclaim twice per second
- increase coalesce timer from 3.5us to 5us

fix printf warning on 64-bit platforms
This commit is contained in:
Kip Macy 2007-05-27 22:07:47 +00:00
parent 5dfb4c0b24
commit 04ad339002
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=170038
2 changed files with 6 additions and 9 deletions
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6
sys/dev/cxgb/cxgb_osdep.h
View File

@ -54,7 +54,7 @@ struct sge_rspq;
#define m_get_priority(m) ((uintptr_t)(m)->m_pkthdr.rcvif)
#define m_set_priority(m, pri) ((m)->m_pkthdr.rcvif = (struct ifnet *)(pri))
#define m_set_priority(m, pri) ((m)->m_pkthdr.rcvif = (struct ifnet *)((uintptr_t)pri))
#if __FreeBSD_version > 700030
#define INTR_FILTERS
@ -95,9 +95,9 @@ struct sge_rspq;
#define TX_MAX_SIZE (1 << 16) /* 64KB */
#define TX_MAX_SEGS 36 /* maximum supported by card */
#define TX_MAX_DESC 4 /* max descriptors per packet */
#define TX_START_MAX_DESC (TX_MAX_DESC << 1) /* maximum number of descriptors
#define TX_START_MAX_DESC (TX_MAX_DESC << 2) /* maximum number of descriptors
* call to start used per */
#define TX_CLEAN_MAX_DESC (TX_MAX_DESC << 2) /* maximum tx descriptors
#define TX_CLEAN_MAX_DESC (TX_MAX_DESC << 4) /* maximum tx descriptors
* to clean per iteration */

9
sys/dev/cxgb/cxgb_sge.c
View File

@ -88,7 +88,7 @@ static int recycle_enable = 1;
* Period of the Tx buffer reclaim timer. This timer does not need to run
* frequently as Tx buffers are usually reclaimed by new Tx packets.
*/
#define TX_RECLAIM_PERIOD (hz >> 2)
#define TX_RECLAIM_PERIOD (hz >> 1)
/*
* work request size in bytes
@ -362,10 +362,7 @@ t3_sge_prep(adapter_t *adap, struct sge_params *p)
q->polling = adap->params.rev > 0;
if (adap->flags & USING_MSIX)
q->coalesce_nsecs = 6000;
else
q->coalesce_nsecs = 3500;
q->coalesce_nsecs = 5000;
q->rspq_size = RSPQ_Q_SIZE;
q->fl_size = FL_Q_SIZE;
@ -1596,7 +1593,7 @@ free_tx_desc(adapter_t *sc, struct sge_txq *q, int n, struct mbuf **m_vec)
d->m = NULL;
nbufs++;
} else {
printf("pri=%d cidx=%d\n", m_get_priority(d->m), cidx);
printf("pri=%d cidx=%d\n", (int)m_get_priority(d->m), cidx);
}
}
++d;