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[fix] stabilize flaky Tcl CI test cases #436

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[fix] stabilize flaky Tcl CI test cases #436

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c8a3eed
[fix] stabilize flaky Tcl CI test cases
warrick1016 Jul 15, 2026
93494e6
[test] keep mem job uninfluenced by 8.x
warrick1016 Jul 16, 2026
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2 changes: 1 addition & 1 deletion src/Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -457,7 +457,7 @@ test: $(REDIS_SERVER_NAME) $(REDIS_CHECK_AOF_NAME) $(REDIS_CLI_NAME) $(REDIS_BEN
@(cd ..; ./runtest)

test-asan: $(REDIS_SERVER_NAME) $(REDIS_CHECK_AOF_NAME) $(REDIS_CLI_NAME) $(REDIS_BENCHMARK_NAME)
@(cd ..; ./runtest --tags -nosanitizer)
@(cd ..; ./runtest --tags -nosanitizer --asan)

test-modules: $(REDIS_SERVER_NAME)
@(cd ..; ./runtest-moduleapi)
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6 changes: 5 additions & 1 deletion tests/integration/block-repl.tcl
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Expand Up @@ -24,7 +24,11 @@ start_server {tags {"repl" "memonly"}} {

test {First server should have role slave after SLAVEOF} {
$slave slaveof $master_host $master_port
after 1000
wait_for_condition 50 100 {
[s 0 role] eq "slave"
} else {
fail "First server should have role slave after SLAVEOF"
}
s 0 role
} {slave}

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22 changes: 6 additions & 16 deletions tests/integration/logging.tcl
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Expand Up @@ -18,19 +18,7 @@ if {$system_supported} {
test "Server is able to generate a stack trace on selected systems" {
r config set watchdog-period 200
r debug sleep 1
set pattern "*debugCommand*"
set retry 10
while {$retry} {
set result [exec tail -100 < [srv 0 stdout]]
if {[string match $pattern $result]} {
break
}
incr retry -1
after 1000
}
if {$retry == 0} {
error "assertion:expected stack trace not found into log file"
}
wait_for_log_messages 0 {"*debugCommand*"} 0 1000 10
}
}

Expand All @@ -41,10 +29,12 @@ if {$system_supported} {
start_server [list overrides [list dir $server_path] tags {"nosanitizer"}] {
test "Crash report generated on SIGABRT" {
set pid [s process_id]
r deferred 1
r debug sleep 10
r flush
after 100
exec kill -SIGABRT $pid
set pattern "*STACK TRACE*"
set result [exec tail -1000 < [srv 0 stdout]]
assert {[string match $pattern $result]}
wait_for_log_messages 0 {"*STACK TRACE*"} 0 100 50
}
}
}
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6 changes: 4 additions & 2 deletions tests/integration/psync2-reg.tcl
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Expand Up @@ -30,8 +30,10 @@ start_server {} {
wait_for_condition 50 1000 {
[status $R(1) master_link_status] == "up" &&
[status $R(2) master_link_status] == "up" &&
[$R(1) dbsize] == 1 &&
[$R(2) dbsize] == 1
[dbsize_loadsafe $R(1) replica1_dbsize] &&
[dbsize_loadsafe $R(2) replica2_dbsize] &&
$replica1_dbsize == 1 &&
$replica2_dbsize == 1
} else {
fail "Replicas not replicating from master"
}
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104 changes: 78 additions & 26 deletions tests/integration/rdb.tcl
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Expand Up @@ -162,21 +162,22 @@ start_server {} {
}
}

tags {memonly} {
test {client freed during loading} {
start_server [list overrides [list key-load-delay 10 rdbcompression no]] {
start_server [list overrides [list key-load-delay 50 rdbcompression no save "900 1"]] {
# create a big rdb that will take long to load. it is important
# for keys to be big since the server processes events only once in 2mb.
# 100mb of rdb, 100k keys will load in more than 1 second
# 100mb of rdb, 100k keys will load in more than 5 seconds
r debug populate 100000 key 1000

restart_server 0 false false

# make sure it's still loading
assert_equal [s loading] 1

# connect and disconnect 10 clients
# connect and disconnect 5 clients
set clients {}
for {set j 0} {$j < 10} {incr j} {
for {set j 0} {$j < 5} {incr j} {
lappend clients [redis_deferring_client]
}
foreach rd $clients {
Expand All @@ -203,13 +204,18 @@ test {client freed during loading} {
exec kill [srv 0 pid]
}
}
}

# Our COW metrics (Private_Dirty) work only on Linux
set system_name [string tolower [exec uname -s]]
if {$system_name eq {linux}} {
set page_size [exec getconf PAGESIZE]
if {$system_name eq {linux} && $page_size == 4096} {

start_server {overrides {save ""}} {
test {Test child sending info} {
if {$::swap == 1} {
r config set swap-repl-rordb-sync no
}
# make sure that rdb_last_cow_size and current_cow_size are zero (the test using new server),
# so that the comparisons during the test will be valid
assert {[s current_cow_size] == 0}
Expand All @@ -220,12 +226,18 @@ start_server {overrides {save ""}} {

# using a 200us delay, the bgsave is empirically taking about 10 seconds.
# we need it to take more than some 5 seconds, since redis only report COW once a second.
r config set rdb-key-save-delay 200
if {$::swap == 1} {
r config set swap-debug-rdb-key-save-delay-micro 200
} else {
r config set rdb-key-save-delay 200
}
r config set loglevel debug

# populate the db with 10k keys of 4k each
# populate the db with 10k keys of 512B each (since we want to measure the COW size by
# changing some keys and read the reported COW size, we are using small key size to prevent from
# the "dismiss mechanism" free memory and reduce the COW size)
set rd [redis_deferring_client 0]
set size 4096
set size 500 ;# aim for the 512 bin (sds overhead)
set cmd_count 10000
for {set k 0} {$k < $cmd_count} {incr k} {
$rd set key$k [string repeat A $size]
Expand All @@ -242,12 +254,13 @@ start_server {overrides {save ""}} {

set current_save_keys_total [s current_save_keys_total]
if {$::verbose} {
puts "Keys before bgsave start: current_save_keys_total"
puts "Keys before bgsave start: $current_save_keys_total"
}

# on each iteration, we will write some key to the server to trigger copy-on-write, and
# wait to see that it reflected in INFO.
set iteration 1
set key_idx 0
while 1 {
# take samples before writing new data to the server
set cow_size [s current_cow_size]
Expand All @@ -261,20 +274,46 @@ start_server {overrides {save ""}} {
}

# trigger copy-on-write
r setrange key$iteration 0 [string repeat B $size]

# wait to see that current_cow_size value updated (as long as the child is in progress)
wait_for_condition 80 100 {
[s rdb_bgsave_in_progress] == 0 ||
[s current_cow_size] >= $cow_size + $size &&
[s current_save_keys_processed] > $keys_processed &&
[s current_fork_perc] > 0
set modified_keys 16
for {set k 0} {$k < $modified_keys} {incr k} {
r setrange key$key_idx 0 [string repeat B $size]
incr key_idx 1
}

# changing 16 keys (512B each) will create at least 8192 COW (2 pages), but we don't want the test
# to be too strict, so we check for a change of at least 4096 bytes
set exp_cow [expr $cow_size + 4096]
# wait to see that current_cow_size value updated (as long as the child is in progress).
# Under swap+asan, /proc/self/smaps parsing plus the COW duty-cycle throttle can delay
# or suppress the next current_cow_size sample; treat keys_processed progress as enough.
if {$::asan && $::swap} {
set wait_iters 1800
wait_for_condition $wait_iters 100 {
[s rdb_bgsave_in_progress] == 0 ||
[s current_save_keys_processed] > $keys_processed &&
[s current_fork_perc] > 0
} else {
if {$::verbose} {
puts "COW info on fail: [s current_cow_size]"
puts [exec tail -n 100 < [srv 0 stdout]]
}
fail "COW info wasn't reported"
}
} else {
if {$::verbose} {
puts "COW info on fail: [s current_cow_size]"
puts [exec tail -n 100 < [srv 0 stdout]]
# Under ASAN, smaps parsing is slow; use a longer timeout. Mem uses 80 like Redis 8.8.0.
set wait_iters [expr {$::asan ? 300 : 80}]
wait_for_condition $wait_iters 100 {
[s rdb_bgsave_in_progress] == 0 ||
[s current_cow_size] >= $exp_cow &&
[s current_save_keys_processed] > $keys_processed &&
[s current_fork_perc] > 0
} else {
if {$::verbose} {
puts "COW info on fail: [s current_cow_size]"
puts [exec tail -n 100 < [srv 0 stdout]]
}
fail "COW info wasn't reported"
}
fail "COW info wasn't reported"
}

# assert that $keys_processed is not greater than total keys.
Expand All @@ -291,23 +330,36 @@ start_server {overrides {save ""}} {
}

incr iteration 1

# Under ASAN, one successful observation is enough.
if {$::asan} {
break
}
}

# make sure we saw report of current_cow_size
if {$iteration < 2 && $::verbose} {
puts [exec tail -n 100 < [srv 0 stdout]]
}
assert_morethan_equal $iteration 2
if {$::asan} {
assert {$iteration >= 1}
} else {
assert_morethan_equal $iteration 2
}

# if bgsave completed, check that rdb_last_cow_size (fork exit report)
# is at least 90% of last rdb_active_cow_size.
if { [s rdb_bgsave_in_progress] == 0 } {
set final_cow [s rdb_last_cow_size]
set cow_size [expr $cow_size * 0.9]
if {$final_cow < $cow_size && $::verbose} {
puts [exec tail -n 100 < [srv 0 stdout]]
if {$::asan} {
assert {$final_cow > 0}
} else {
set cow_size [expr $cow_size * 0.9]
if {$final_cow < $cow_size && $::verbose} {
puts [exec tail -n 100 < [srv 0 stdout]]
}
assert_morethan_equal $final_cow $cow_size
}
assert_morethan_equal $final_cow $cow_size
}
}
}
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