[dpdk-dev] [PATCH 2/2] rte_kni: Add documentation for the mempool capacity.
Alex Wang
ee07b291 at gmail.com
Sat May 14 20:22:55 CEST 2016
From: Alex Wang <alex at awakenetworks.com>
Function like 'rte_kni_rx_burst()' keeps allocating
'MAX_MBUF_BURST_NUM' mbufs to kni fifo queue unless the
queue's capacity ('KNI_FIFO_COUNT_MAX') is reached. So,
if the mempool is under-provisioned, user may run into
"Out of Memory" logs from KNI code. This commit documents
the need to provision mempool capacity of couple thousand
elements for each KNI interface.
Signed-off-by: Alex Wang <alex at awakenetworks.com>
---
lib/librte_kni/rte_kni.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/lib/librte_kni/rte_kni.h b/lib/librte_kni/rte_kni.h
index 25fa45e..05d2d39 100644
--- a/lib/librte_kni/rte_kni.h
+++ b/lib/librte_kni/rte_kni.h
@@ -113,6 +113,9 @@ extern void rte_kni_init(unsigned int max_kni_ifaces);
* The rte_kni_alloc shall not be called before rte_kni_init() has been
* called. rte_kni_alloc is thread safe.
*
+ * The mempool should have capacity of couple thousand elements for each
+ * KNI interface allocated.
+ *
* @param pktmbuf_pool
* The mempool for allocting mbufs for packets.
* @param conf
--
2.1.4
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