[alsa-utils][PATCH 00/14] axfer: reduce test time

[Takashi Sakamoto]

Hi,

The axfer in alsa-utils has test programs for internal modules and
overall time to execute them takes much. The issue is filing in
github repository[1]. It comes from three causes:

1. file I/O operations are done in file system for actual storage
2. Some cases operate much audio data frames (over 4MB, approx.)
3. much test iteration count (so simple...)

This patchset uses shm by memfd_create(2) for the cause 1. In addition,
the number of maximum audio data frame to test is reduced as well as the
number of samples per frame.

I got benchmark with berow machine environment.

 * AMD Ryzen 5 2400G
 * memory total 30823852 KB
 * linux-image-5.8.0-44-generic on Ubuntu 20.04 amd64
 * ext4 on SATA SSD

As a result:
                   |container|  mapper |
                   |   test  |   test  |
================== | ======= | ======= |
Current            | 112 min |   5 min |
+shm               |  58 min |  50 sec |
+maximum reduction |  38 min |    -    |
+iter reduction    |   4 min |    -    |

In my opinion, the issue comes from package build server in each
distribution. 5 min for test execution is not so worse time.

Finally, test programs run on shm and commit c3f2344b7209 is reverted[1]
since it's useless now.

(I have free time at last from reverse-engineering work to analyze
protocols of RME Fireface series[1], and start to solve stacked issues.)

[1] https://github.com/alsa-project/snd-firewire-ctl-services/pull/37
[2] https://github.com/alsa-project/alsa-utils/issues/19
[3] https://github.com/alsa-project/alsa-utils/commit/c3f2344b7209

Regards

Takashi Sakamoto (14):
  axfer: minor code arrangement for container module in a point of
    nonblocking flag
  axfer: minor code arrangement in a point of stdio detection
  axfer: minor code arrangement in a point of opened file descriptor
  axfer: minor code arrangement to allocate containers
  axfer: open file descriptor outside of container module
  axfer: maintain lifetime of file descriptor outside of container
    module
  autotools: preparation to use memfd_create(2)
  axfer: test: minor code arrangement to use the same file descriptor
    for container-test
  axfer: test: use memfd_create() for container-test
  axfer: test: minor code arrangement to use the same file descriptor
    for mappter-test
  axfer: test: use memfd_create() for mapper-test
  axfer: test: reduce test case for maximum number of frame count
  axfer: test: reduce test case for maximum number of samples per frame
  Revert "axfer: test - add run-test-in-tmpdir.sh script"

 axfer/container.c                | 57 +++++++++++-----------------
 axfer/container.h                | 10 ++---
 axfer/subcmd-transfer.c          | 64 ++++++++++++++++++++++++++------
 axfer/test/container-test.c      | 53 +++++++++++++++++++-------
 axfer/test/mapper-test.c         | 55 ++++++++++++++++++++++-----
 axfer/test/run-test-in-tmpdir.sh | 19 ----------
 configure.ac                     |  5 +++
 7 files changed, 167 insertions(+), 96 deletions(-)
 delete mode 100755 axfer/test/run-test-in-tmpdir.sh

-- 
2.27.0