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Searched refs:latency (Results 1 – 22 of 22) sorted by path

/qemu/audio/
H A Ddsoundaudio.c635 dso->latency = 10000; /* 10 ms */ in dsound_audio_init()
H A Dpaaudio.c529 ba.tlength = pa_usec_to_bytes(ppdo->latency, &ss); in qpa_init_out()
530 ba.minreq = pa_usec_to_bytes(MIN(ppdo->latency >> 2, in qpa_init_out()
580 MAX(ppdo->latency, g->dev->timer_period * 3), &ss); in qpa_init_in()
755 pdo->latency = 46440; in qpa_validate_per_direction_opts()
H A Dpwaudio.c558 (ppdo->has_latency ? ppdo->latency : 46440) in qpw_init_out()
H A Dsndioaudio.c53 unsigned int latency; member
330 unsigned long long latency; in sndio_init() local
337 latency = opts->has_latency ? opts->latency : SNDIO_LATENCY_US; in sndio_init()
392 req.appbufsz = req.rate * latency / 1000000; in sndio_init()
/qemu/block/
H A Daccounting.c89 timed_average_init(&s->latency[i], clock_type, in block_acct_add_interval()
236 timed_average_account(&s->latency[cookie->type], latency_ns); in block_account_one_io()
294 sum = timed_average_sum(&stats->latency[type], &elapsed); in block_acct_queue_depth()
H A Dqapi.c547 TimedAverage *rd = &ts->latency[BLOCK_ACCT_READ]; in bdrv_query_blk_stats()
548 TimedAverage *wr = &ts->latency[BLOCK_ACCT_WRITE]; in bdrv_query_blk_stats()
549 TimedAverage *zap = &ts->latency[BLOCK_ACCT_ZONE_APPEND]; in bdrv_query_blk_stats()
550 TimedAverage *fl = &ts->latency[BLOCK_ACCT_FLUSH]; in bdrv_query_blk_stats()
/qemu/docs/about/
H A Ddeprecated.rst351 QEMU's ``vhost`` feature, which would eliminate the high latency costs under
/qemu/docs/devel/
H A Dmulti-process.rst585 process can add considerable latency to IO operations. The optimizations
H A Dmultiple-iothreads.txt30 can improve I/O latency and reduce jitter seen by the guest.
/qemu/docs/
H A Dpcie.txt281 Flags: bus master, fast devsel, latency 0, IRQ 50
H A Drdma.txt29 of the significantly lower latency and higher throughput over TCP/IP. This is
/qemu/docs/specs/
H A Drocker.txt72 0x3D 1 Max latency 0x00
/qemu/hw/core/
H A Dnuma.c280 if (node->latency) { in parse_numa_hmat_lb()
282 max_entry = node->latency; in parse_numa_hmat_lb()
291 max_entry = node->latency / hmat_lb->base; in parse_numa_hmat_lb()
301 "min or max values on more than %d", node->latency, in parse_numa_hmat_lb()
315 lb_data.data = node->latency; in parse_numa_hmat_lb()
/qemu/hw/usb/
H A Ddev-serial.c107 int latency; /* ms */ member
409 s->latency = value; in usb_serial_handle_control()
412 data[0] = s->latency; in usb_serial_handle_control()
/qemu/include/block/
H A Daccounting.h47 TimedAverage latency[BLOCK_MAX_IOTYPE]; member
/qemu/qapi/
H A Daudio.json120 # @latency: play buffer size (in microseconds)
129 '*latency': 'uint32'} }
171 # @latency: add extra latency to playback in microseconds (default
180 '*latency': 'uint32' } }
270 # where smaller number means smaller latency but higher CPU usage)
297 # @latency: latency you want PulseAudio to achieve in microseconds
307 '*latency': 'uint32' } }
341 # @latency: latency you want PipeWire to achieve in microseconds
351 '*latency': 'uint32' } }
H A Dblock-core.json661 # Block latency histogram.
862 # @min_rd_latency_ns: Minimum latency of read operations in the
865 # @min_wr_latency_ns: Minimum latency of write operations in the
868 # @min_zone_append_latency_ns: Minimum latency of zone append
874 # @max_rd_latency_ns: Maximum latency of read operations in the
877 # @max_wr_latency_ns: Maximum latency of write operations in the
880 # @max_zone_append_latency_ns: Maximum latency of zone append
886 # @avg_rd_latency_ns: Average latency of read operations in the
892 # @avg_zone_append_latency_ns: Average latency of zone append
1020 # latency and last access statistics (Since 2.5)
[all …]
H A Dblock.json551 # -> { "execute": "block-latency-histogram-set",
561 # -> { "execute": "block-latency-histogram-set",
572 # -> { "execute": "block-latency-histogram-set",
582 # -> { "execute": "block-latency-histogram-set",
H A Dmachine.json491 # @hmat-lb: memory latency and bandwidth information (Since: 5.0)
698 # @access-latency: access latency (nanoseconds)
700 # @read-latency: read latency (nanoseconds)
702 # @write-latency: write latency (nanoseconds)
713 'data': [ 'access-latency', 'read-latency', 'write-latency',
719 # Set the system locality latency and bandwidth information between
732 # @data-type: presents the type of data, access/read/write latency or
733 # hit latency.
735 # @latency: the value of latency from @initiator to @target proximity
736 # domain, the latency unit is "ns(nanosecond)".
[all …]
/qemu/
H A Dqemu-options.hx389 …|first-level|second-level|third-level,data-type=access-latency|read-latency|write-latency[,latency…
549 -numa hmat-lb,initiator=0,target=0,hierarchy=memory,data-type=access-latency,latency=5 \
551 -numa hmat-lb,initiator=0,target=1,hierarchy=memory,data-type=access-latency,latency=10 \
808 " latency= add extra latency to playback in microseconds\n"
823 " in|out.latency= desired latency in microseconds\n"
829 " in|out.latency= desired latency in microseconds\n"
945 ``latency=usecs``
990 ``in|out.latency=usecs``
1000 ``in|out.latency=usecs``
1001 Desired latency in microseconds.
[all …]
/qemu/tests/avocado/acpi-bits/bits-tests/
H A Dsmilatency.py231 """SMI latency test."""
41 # testsuite.add_test("SMI latency test", smi_latency);
42 # testsuite.add_test("SMI latency test with USB disabled via BIOS handoff", test_with_usb_disabl…
70 …testsuite.test("SMI latency < 150us to minimize risk of OS timeouts", max_latency / tsc_per_usec <…
84 …testsuite.print_detail("Summary of impact: observed maximum latency = {}".format(bits.format_tsc(m…
/qemu/tests/qemu-iotests/
H A D136114 latency = 0
116 latency += self.total_wr_ops * op_latency
118 latency += self.failed_wr_ops * op_latency
120 latency += self.total_rd_ops * op_latency
122 latency += self.failed_rd_ops * op_latency
124 latency += self.total_flush_ops * op_latency
125 return latency