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authorChuck Lever <cel@netapp.com>2006-01-03 11:55:49 +0300
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-01-06 22:58:55 +0300
commit02107148349f31eee7c0fb06fd7a880df73dbd20 (patch)
tree37bffd81e08b8e50394ce89a1aa7a3961f0ffbe7 /fs
parent03c21733938aad0758f5f88e1cc7ede69fc3c910 (diff)
downloadlinux-02107148349f31eee7c0fb06fd7a880df73dbd20.tar.xz
SUNRPC: switchable buffer allocation
Add RPC client transport switch support for replacing buffer management on a per-transport basis. In the current IPv4 socket transport implementation, RPC buffers are allocated as needed for each RPC message that is sent. Some transport implementations may choose to use pre-allocated buffers for encoding, sending, receiving, and unmarshalling RPC messages, however. For transports capable of direct data placement, the buffers can be carved out of a pre-registered area of memory rather than from a slab cache. Test-plan: Millions of fsx operations. Performance characterization with "sio" and "iozone". Use oprofile and other tools to look for significant regression in CPU utilization. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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