| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
The "Latency" screen has been updated with 3 columns:
- mis-ordered
Count the number of mis-ordered packets.
- extent:
Gives an indication of how mis-ordered the packets are.
Receiving packet "x - 5" after receiving packet "x" will
cause an extent of 5.
- duplicate:
Count number of duplicate packets.
Following commands have been added for the impair mode:
- proba no drop: replaces the former "probability" command.
Percentage of forwarded packets. So 99.5 means 0.5% of packet drop.
- proba delay
Percentage of delayed packets for the impair mode.
- proba duplicate
Percentage of duplicate packets.
Similar parameters are supported within the config files:
- proba no drop
- proba delay
- proba duplicate
Note: it is recommanded to use the signature when measuring packet
misorder, as otherwise unexpected packet would cause miscounts.
Change-Id: I037f606f264d6e2bd7f123df5ed57ab7df8386d7
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>
|
|
lat all stats <core_id> <task_id> combines "lat stats" and "lat packets" within one command.
This command returns:
- One line in case the core_task parser fails. In that case the line will start with: "error: invalid syntax"
- One set of lines for each core task:
- if core/task is invalid, or not running lat mode, the line will contain (start with) "error...". this will be the only line for that core/task.
- Otherwise the set of lines will be:
- One line as returned by "lat stats". This line will be
- One line starting with "error" in case of error, or
- One line containing lat_min_usec, lat_max_usec, lat_avg_usec, tot_lat_min_usec, tot_lat_max_usec, last_tsc, rte_get_tsc_hz(), lcore_id, task_id
- The return from lat packets i.e.
- One line starting with "error" in case of error, or
- 128 lines - one for each bucket - as returned by "lat packets" command
This command is more useful then lat packets, as it contains the tsc - needed to see whether the sample is new or not.
Change-Id: I04231aa7c5bd2d352ed6f94d40e88d3b411ce744
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>
|
|
- Latency Distribution (i.e. histograms) has been added when latency is enabled.
- Histograms are now compiled by default.
- A bug has also been fixed, which was causing strange behavior in the histograms
(due to bucket size being overwritten).
- The default bucket size has been changed to "11" which means that the size of each bucket
is now (1 cycle << 11) = 2048 cycles = 1 microsecond at 2GHz. It was (1 << (10 - 1)).
As there are 128 latency buckets, it is not possible to show all of them on the display.
Hence the latency buckets are displayed based on on the assumption that the minimum latency is usually relatively
stable and that the maximum latency change more often.
- The first empty buckets are not shown (i.e. buckets empty for all tasks)
- If more than 15 buckets are non empty, then the buckets are combined, so that a maximum of
15 (bigger) buckets are shown
- If less than 15 buckets are non empty, the following (empty) buckets are shown
(this avoid seeing every x seconds some columns being added and removed).
Change-Id: I27fe6ac0e513a5558e42ff2e74255c55ba79516d
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>
|
|
Accuracy of latency is obtained by writing TX accuracy for packet N
in a later packet i.e. packet N + WINDOW.
If this window is too small, packet N + WINDOW (conveying accuracy
for packet N) might arrive before packet N, resulting in no accuracy
for packet N.
This change increases this window from 64 to 8K packets.
This change should result in a higher number of packets used for
latency measurements when packets are reordered.
This change might have a performance impact as it uses more memory.
Change-Id: I1016fddb66af86605c73a24050238da41cf54152
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>
Signed-off-by: Patrice Buriez <patrice.buriez@intel.com>
|
|
- Also changed lat_info.tx_packet_index to uint64_t,
so also did it for task_lat.prev_tx_packet_index and n_loss.
- Adjusted format strings accordingly, and fixed some other formats.
- Adjusted overflow increment to 2^32 (i.e. UINT32_MAX + 1).
- Replaced hard-coded 64 with ACCURACY_BUFFER_SIZE (still hard-coded
in handle_gen.c).
Change-Id: Ia59f36e17c0797a2a958dbe3b2ac420263473524
Signed-off-by: Xavier Simonart <xavier.simonart@intel.com>
Signed-off-by: Patrice Buriez <patrice.buriez@intel.com>
|
|
JIRA: SAMPLEVNF-55
PROX is a DPDK-based application implementing Telco use-cases such as
a simplified BRAS/BNG, light-weight AFTR... It also allows configuring
finer grained network functions like QoS, Routing, load-balancing...
(We are moving PROX version v039 to sampleVNF
https://01.org/intel-data-plane-performance-demonstrators/prox-overview)
Change-Id: Ia3cb02cf0e49ac5596e922c197ff7e010293d033
Signed-off-by: Deepak S <deepak.s@linux.intel.com>
|
Xavier Simonart
Deepak S