Messages in this thread | | | From | Phil Sutter <> | Subject | [PATCH v2 0/4] improve fault-tolerance of rhashtable runtime-test | Date | Fri, 20 Nov 2015 18:17:16 +0100 |
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The following series aims to improve lib/test_rhashtable in different situations:
Patch 1 allows the kernel to reschedule so the test does not block too long on slow systems. Patch 2 fixes behaviour under pressure, retrying inserts in non-permanent error case (-EBUSY). Patch 3 auto-adjusts the upper table size limit according to the number of threads (in concurrency test). In fact, the current default is already too small. Patch 4 makes it possible to retry inserts even in supposedly permanent error case (-ENOMEM) to expose rhashtable's remaining problem of -ENOMEM being not as permanent as it is expected to be.
Changes since v1: - Introduce insert_retry() which is then used in single-threaded test as well. - Do not retry inserts by default if -ENOMEM was returned. - Rename the retry counter to be a bit more verbose about what it contains. - Add patch 4 as a debugging aid.
Phil Sutter (4): rhashtable-test: add cond_resched() to thread test rhashtable-test: retry insert operations rhashtable-test: calculate max_entries value by default rhashtable-test: allow to retry even if -ENOMEM was returned
lib/test_rhashtable.c | 76 +++++++++++++++++++++++++++++++++------------------ 1 file changed, 50 insertions(+), 26 deletions(-)
-- 2.1.2
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