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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [OSSTEST PATCH 14/14] duration_estimator: Move duration query loop into database
Stuff the two queries together: we use the firsty query as a WITH
clause. This is significantly faster, perhaps because the query
optimiser does a better job but probably just because it saves on
round trips.
No functional change.
Perf: subjectively this seemed to help when the cache was cold. Now I
have a warm cache and it doesn't seem to make much difference.
Perf: runtime of my test case now ~5-7s.
Example queries before (from the debugging output):
Query A part I:
SELECT f.flight AS flight,
j.job AS job,
f.started AS started,
j.status AS status
FROM flights f
JOIN jobs j USING (flight)
JOIN runvars r
ON f.flight=r.flight
AND r.name=?
WHERE j.job=r.job
AND f.blessing=?
AND f.branch=?
AND j.job=?
AND r.val=?
AND (j.status='pass' OR j.status='fail'
OR j.status='truncated'!)
AND f.started IS NOT NULL
AND f.started >= ?
ORDER BY f.started DESC
With bind variables:
"test-amd64-i386-xl-pvshim"
"guest-start"
Query B part I:
SELECT f.flight AS flight,
s.job AS job,
NULL as started,
NULL as status,
max(s.finished) AS max_finished
FROM steps s JOIN flights f
ON s.flight=f.flight
WHERE s.job=? AND f.blessing=? AND f.branch=?
AND s.finished IS NOT NULL
AND f.started IS NOT NULL
AND f.started >= ?
GROUP BY f.flight, s.job
ORDER BY max_finished DESC
With bind variables:
"test-armhf-armhf-libvirt"
'real'
"xen-unstable"
1594144469
Query common part II:
WITH tsteps AS
(
SELECT *
FROM steps
WHERE flight=? AND job=?
)
, tsteps2 AS
(
SELECT *
FROM tsteps
WHERE finished <=
(SELECT finished
FROM tsteps
WHERE tsteps.testid = ?)
)
SELECT (
SELECT max(finished)-min(started)
FROM tsteps2
) - (
SELECT sum(finished-started)
FROM tsteps2
WHERE step = 'ts-hosts-allocate'
)
AS duration
With bind variables from previous query, eg:
152045
"test-armhf-armhf-libvirt"
"guest-start.2"
After:
Query A (combined):
WITH f AS (
SELECT f.flight AS flight,
j.job AS job,
f.started AS started,
j.status AS status
FROM flights f
JOIN jobs j USING (flight)
JOIN runvars r
ON f.flight=r.flight
AND r.name=?
WHERE j.job=r.job
AND f.blessing=?
AND f.branch=?
AND j.job=?
AND r.val=?
AND (j.status='pass' OR j.status='fail'
OR j.status='truncated'!)
AND f.started IS NOT NULL
AND f.started >= ?
ORDER BY f.started DESC
)
SELECT flight, max_finished, job, started, status,
(
WITH tsteps AS
(
SELECT *
FROM steps
WHERE flight=f.flight AND job=f.job
)
, tsteps2 AS
(
SELECT *
FROM tsteps
WHERE finished <=
(SELECT finished
FROM tsteps
WHERE tsteps.testid = ?)
)
SELECT (
SELECT max(finished)-min(started)
FROM tsteps2
) - (
SELECT sum(finished-started)
FROM tsteps2
WHERE step = 'ts-hosts-allocate'
)
AS duration
) FROM f
Query B (combined):
WITH f AS (
SELECT f.flight AS flight,
s.job AS job,
NULL as started,
NULL as status,
max(s.finished) AS max_finished
FROM steps s JOIN flights f
ON s.flight=f.flight
WHERE s.job=? AND f.blessing=? AND f.branch=?
AND s.finished IS NOT NULL
AND f.started IS NOT NULL
AND f.started >= ?
GROUP BY f.flight, s.job
ORDER BY max_finished DESC
)
SELECT flight, max_finished, job, started, status,
(
WITH tsteps AS
(
SELECT *
FROM steps
WHERE flight=f.flight AND job=f.job
)
, tsteps2 AS
(
SELECT *
FROM tsteps
WHERE finished <=
(SELECT finished
FROM tsteps
WHERE tsteps.testid = ?)
)
SELECT (
SELECT max(finished)-min(started)
FROM tsteps2
) - (
SELECT sum(finished-started)
FROM tsteps2
WHERE step = 'ts-hosts-allocate'
)
AS duration
) FROM f
Diff for query A:
@@ -1,3 +1,4 @@
+ WITH f AS (
SELECT f.flight AS flight,
j.job AS job,
f.started AS started,
@@ -18,11 +19,14 @@
AND f.started >= ?
ORDER BY f.started DESC
+ )
+ SELECT flight, max_finished, job, started, status,
+ (
WITH tsteps AS
(
SELECT *
FROM steps
- WHERE flight=? AND job=?
+ WHERE flight=f.flight AND job=f.job
)
, tsteps2 AS
(
@@ -42,3 +46,5 @@
WHERE step = 'ts-hosts-allocate'
)
AS duration
+
+ ) FROM f
Diff for query B:
@@ -1,3 +1,4 @@
+ WITH f AS (
SELECT f.flight AS flight,
s.job AS job,
NULL as started,
@@ -12,11 +13,14 @@
GROUP BY f.flight, s.job
ORDER BY max_finished DESC
+ )
+ SELECT flight, max_finished, job, started, status,
+ (
WITH tsteps AS
(
SELECT *
FROM steps
- WHERE flight=? AND job=?
+ WHERE flight=f.flight AND job=f.job
)
, tsteps2 AS
(
@@ -36,3 +40,5 @@
WHERE step = 'ts-hosts-allocate'
)
AS duration
+
+ ) FROM f
CC: George Dunlap <George.Dunlap@xxxxxxxxxx>
Signed-off-by: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
---
Osstest/Executive.pm | 31 ++++++++++++++++++++-----------
1 file changed, 20 insertions(+), 11 deletions(-)
diff --git a/Osstest/Executive.pm b/Osstest/Executive.pm
index 621153ee..66c93ab9 100644
--- a/Osstest/Executive.pm
+++ b/Osstest/Executive.pm
@@ -1192,7 +1192,7 @@ END
(
SELECT *
FROM steps
- WHERE flight=? AND job=?
+ WHERE flight=f.flight AND job=f.job
)
END_ALWAYS
, tsteps2 AS
@@ -1216,9 +1216,20 @@ END_UPTOINCL
AS duration
END_ALWAYS
- my $recentflights_q= $dbh_tests->prepare($recentflights_qtxt);
- my $duration_anyref_q= $dbh_tests->prepare($duration_anyref_qtxt);
- my $duration_duration_q = $dbh_tests->prepare($duration_duration_qtxt);
+ my $prepare_combi = sub {
+ db_prepare(<<END);
+ WITH f AS (
+$_[0]
+ )
+ SELECT flight, max_finished, job, started, status,
+ (
+$duration_duration_qtxt
+ ) FROM f
+END
+ };
+
+ my $recentflights_q= $prepare_combi->($recentflights_qtxt);
+ my $duration_anyref_q= $prepare_combi->($duration_anyref_qtxt);
return sub {
my ($job, $hostidname, $onhost, $uptoincl_testid) = @_;
@@ -1239,14 +1250,16 @@ END_ALWAYS
$branch,
$job,
$onhost,
- $limit);
+ $limit,
+ @x_params);
$refs= $recentflights_q->fetchall_arrayref({});
$recentflights_q->finish();
$dbg->("SAME-HOST GOT ".scalar(@$refs));
}
if (!@$refs) {
- $duration_anyref_q->execute($job, $blessing, $branch, $limit);
+ $duration_anyref_q->execute($job, $blessing, $branch, $limit,
+ @x_params);
$refs= $duration_anyref_q->fetchall_arrayref({});
$duration_anyref_q->finish();
$dbg->("ANY-HOST GOT ".scalar(@$refs));
@@ -1259,11 +1272,7 @@ END_ALWAYS
my $duration_max= 0;
foreach my $ref (@$refs) {
- my @d_d_args = ($ref->{flight}, $job);
- push @d_d_args, @x_params;
- $duration_duration_q->execute(@d_d_args);
- my ($duration) = $duration_duration_q->fetchrow_array();
- $duration_duration_q->finish();
+ my ($duration) = $ref->{duration};
if ($duration) {
$dbg->("REF $ref->{flight} DURATION $duration ".
($ref->{status} // ''));
--
2.20.1
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