dodng / Fast_ring_queue
A fast no_lock RingQueue between 2 threads (25M WrtieRead per second)
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1. What is a ring queue
- the data is "first in first out".
- prev data of queue head is the queue tail.
- the data of ring can reuse.
2. The advantages of ring queue
-
Guaranteed elements are first-in, first-out
-
Element space can be reused
-
Provides an efficient mechanism for multithread data transfer.
3. Ring queue of work example
- Linux between kernel and system to transfor network data( PACKET_RX_RING and PACKET_TX_RING )
4. Actual test results
- In CentOS 5.5 (cpu per core frequency 1200MHz) .
- ring queue length is 10000, one element data size is 4 bytes
- [ring_test] the element writted and then to read is about 25 million per second.
- [notify_ring_test] the element writted and then to read is about 20 million per second.
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