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18 The LOCALIO auxiliary protocol's implementation, which uses the same
38 The performance advantage realized from LOCALIO's ability to bypass
43 4K read: IOPS=979k, BW=3825MiB/s (4011MB/s)(74.7GiB/20002msec)
44 4K write: IOPS=165k, BW=646MiB/s (678MB/s)(12.6GiB/20002msec)
45 128K read: IOPS=402k, BW=49.1GiB/s (52.7GB/s)(982GiB/20002msec)
46 128K write: IOPS=11.5k, BW=1433MiB/s (1503MB/s)(28.0GiB/20004msec)
49 4K read: IOPS=79.2k, BW=309MiB/s (324MB/s)(6188MiB/20003msec)
50 4K write: IOPS=59.8k, BW=234MiB/s (245MB/s)(4671MiB/20002msec)
51 128K read: IOPS=33.9k, BW=4234MiB/s (4440MB/s)(82.7GiB/20004msec)
52 128K write: IOPS=11.5k, BW=1434MiB/s (1504MB/s)(28.0GiB/20011msec)
56 4K read: IOPS=230k, BW=898MiB/s (941MB/s)(17.5GiB/20001msec)
57 4K write: IOPS=22.6k, BW=88.3MiB/s (92.6MB/s)(1766MiB/20001msec)
58 128K read: IOPS=38.8k, BW=4855MiB/s (5091MB/s)(94.8GiB/20001msec)
59 128K write: IOPS=11.4k, BW=1428MiB/s (1497MB/s)(27.9GiB/20001msec)
62 4K read: IOPS=77.1k, BW=301MiB/s (316MB/s)(6022MiB/20001msec)
63 4K write: IOPS=32.8k, BW=128MiB/s (135MB/s)(2566MiB/20001msec)
64 128K read: IOPS=24.4k, BW=3050MiB/s (3198MB/s)(59.6GiB/20001msec)
65 128K write: IOPS=11.4k, BW=1430MiB/s (1500MB/s)(27.9GiB/20001msec)
130 Given LOCALIO's requirements the current approach of having the
205 clients_list from the nfs_common's uuids_list. See:
208 nfs_common's nfs_uuids list is the basis for LOCALIO enablement, as such
210 (e.g. 'net' is the server's network namespace, through it the client can
213 objects to span from the host kernel's nfsd to per-container knfsd
214 instances that are connected to nfs client's running on the same local
223 We don't want to keep a long-term counted reference on each NFSD's
229 the net-ns active. This involves allowing the NFSD's net-ns exit
243 the nfs_uuid_t onto a per-net-ns list in NFSD's nfsd_net.
245 - When each server's net-ns is shutting down - in a "pre_exit"
251 - The client's nfs_uuid_t is passed to nfsd_open_local_fh() so it
255 So LOCALIO required the introduction and use of NFSD's percpu_ref to
267 NFSD's net-ns (and nfsd_net by association) may have been destroyed
277 to the LOCALIO client's attempting to nfsd_open_local_fh(), using
292 The client's fs/nfs/localio.c:nfs_local_open_fh() will call into the
293 server's fs/nfsd/localio.c:nfsd_open_local_fh() and carefully access
311 the NFS server will not. Because the NFS server's use of buffered IO
335 the server's per-namespace nfsd_net struct. With traditional NFS, the
365 - Various kdevops testing (in terms of "Chuck's BuildBot") has been
369 - All of Hammerspace's various sanity tests pass with LOCALIO enabled