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Searched refs:sequential (Results 1 – 25 of 59) sorted by relevance

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/linux/Documentation/admin-guide/device-mapper/
H A Ddm-zoned.rst9 doing raw block device accesses) the sequential write constraints of
37 dm-zoned implements an on-disk buffering scheme to handle non-sequential
38 write accesses to the sequential zones of a zoned block device.
52 sequential zones used exclusively to store user data. The conventional
55 later moved to a sequential zone so that the conventional zone can be
85 sequential zone, the write operation is processed directly only if the
87 offset within of the sequential data zone (i.e. the write operation is
92 automatically invalidate the same block in the sequential zone mapping
93 the chunk. If all blocks of the sequential zone become invalid, the zone
100 the sequential zone mapping a chunk, or if the chunk is buffered, from
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H A Dcache-policies.rst131 sequential threshold set to 1024 and the random_threshold set to 8.
/linux/Documentation/filesystems/
H A Dzonefs.rst12 device support (e.g. f2fs), zonefs does not hide the sequential write
13 constraint of zoned block devices to the user. Files representing sequential
41 sequentially. Each sequential zone has a write pointer maintained by the
43 to the device. As a result of this write constraint, LBAs in a sequential zone
78 the zone containing the super block is a sequential zone, the mkzonefs format
94 For sequential write zones, the sub-directory "seq" is used.
135 The size of sequential zone files grouped in the "seq" sub-directory represents
144 Since dirty page writeback by the page cache does not guarantee a sequential
146 on sequential files. Only direct I/O writes are accepted for these files.
147 zonefs relies on the sequential delivery of write I/O requests to the device
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/linux/tools/perf/tests/
H A Dbuiltin-test.c48 static bool sequential; variable
517 if (pass == 1 && !sequential && test_exclusive(test, curr_test_case)) { in start_test()
521 if (pass != 1 && (sequential || !test_exclusive(test, curr_test_case))) { in start_test()
543 if (sequential || pass == 2) { in start_test()
661 if (!sequential) { in __cmd_test()
796 OPT_BOOLEAN('S', "sequential", &sequential, in cmd_test()
837 sequential = true; in cmd_test()
/linux/Documentation/ABI/testing/
H A Dsysfs-driver-intel-m10-bmc22 of sequential MAC addresses assigned to the board
32 Description: Read only. Returns the number of sequential MAC
H A Dsysfs-block-bcache47 For backing devices: Threshold past which sequential IO will
56 to the sequential cutoff). Expressed as bytes in human
H A Dsysfs-bus-rapidio196 sequential number (0 ... RIO_MAX_MPORTS) assigned to the mport
/linux/tools/perf/Documentation/
H A Dperf-test.txt38 --sequential::
51 sets sequential mode.
H A Ddb-export.txt15 The export process provides records with unique sequential ids which allows the
/linux/Documentation/admin-guide/
H A Dbcache.rst33 to caching large sequential IO. Bcache detects sequential IO and skips it;
352 By default, bcache doesn't cache everything. It tries to skip sequential IO -
369 slower SSDs, many disks being cached by one SSD, or mostly sequential IO. So
375 cranking down the sequential bypass).
439 A sequential IO will bypass the cache once it passes this threshold; the
440 most recent 128 IOs are tracked so sequential IO can be detected even when
445 against all new requests to determine which new requests are sequential
446 continuations of previous requests for the purpose of determining sequential
447 cutoff. This is necessary if the sequential cutoff value is greater than the
448 maximum acceptable sequential size for any single request.
/linux/tools/perf/
H A DMakefile55 BUILD_TYPE := sequential
/linux/Documentation/driver-api/mmc/
H A Dmmc-test.rst204 | 23 | Best-case read performance | Performs 512K sequential read (non sg) |
230 | 35 | Large sequential read | Into scattered pages |
232 | 36 | Large sequential write | From scattered pages |
/linux/drivers/md/bcache/
H A Drequest.c438 i->sequential = 0; in check_should_bypass()
440 if (i->sequential + bio->bi_iter.bi_size > i->sequential) in check_should_bypass()
441 i->sequential += bio->bi_iter.bi_size; in check_should_bypass()
445 task->sequential_io = i->sequential; in check_should_bypass()
H A Dbcache.h292 unsigned int sequential; member
/linux/Documentation/driver-api/md/
H A Draid5-cache.rst55 which are sequential but not dispatched in the same time will suffer from this
59 typical workload which does sequential write followed by fsync is an example.
/linux/Documentation/admin-guide/blockdev/
H A Dzoned_loop.rst27 size. The size of a file backing a sequential zone indicates the amount of data
31 When resetting a sequential zone, its backing file size is truncated to zero.
/linux/Documentation/block/
H A Dblk-mq.rst76 to sequential access, grouped requests for sequential access decreases the
H A Dbfq-iosched.rst122 sequential workloads considered in our tests. With random workloads,
187 devices, if processes do synchronous and sequential I/O. In
228 performing random I/O that becomes mostly sequential if
272 associated with I/O-bound applications performing sequential
480 the percentage of sequential I/O requests issued. The price of larger
/linux/Documentation/core-api/
H A Ddma-attributes.rst88 You might know that the accesses are likely to be sequential or
89 that they aren't sequential but it's unlikely you'll ping-pong
/linux/drivers/scsi/bfa/
H A Dbfa_fc.h314 u32 sequential:1; member
318 u32 sequential:1;
/linux/Documentation/admin-guide/media/
H A Dimx.rst217 pad's field type is sequential top-bottom or bottom-top, and the
472 must output sequential or alternating fields (field type 'seq-bt' for
493 Compensated de-interlacing. The adv7180 must output sequential or
530 must output sequential or alternating fields (field type 'seq-bt' for
551 Compensated de-interlacing. The adv7180 must output sequential or
/linux/Documentation/iio/
H A Dad4062.rst102 The acquisition is sequential and bounded by the protocol timings, software
/linux/Documentation/admin-guide/cifs/
H A Dtodo.rst120 there are some easy changes that can be done to parallelize sequential writes,
/linux/Documentation/filesystems/nfs/
H A Dnfsd-io-modes.rst81 proven to help most is: NFS client issuing large sequential IO to a file
/linux/Documentation/locking/
H A Dseqlock.rst4 Sequence counters and sequential locks

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