slabtop check has optional spaces at start of line

There is a race condition between expect script consuming the output
from slabtop. There were a sequences of lines that looked like
^\d+ ... \s*
with the last \s* consuming the first space on the start of the line.
However if the line takes too long to print, then expect stops there and
the space at the start of the subsquent line does not match.

The solution is a \s* at the start ofthe line.
This commit is contained in:
Craig Small 2011-12-04 22:08:23 +11:00
parent 5277341278
commit db602e1d44

View File

@ -7,6 +7,9 @@ set avst "Active / Total"
set used "\\\(% used\\\)\\s+:" set used "\\\(% used\\\)\\s+:"
set pct "\\\(\\d+\\.\\d+%\\\)" set pct "\\\(\\d+\\.\\d+%\\\)"
if { [ file readable "/proc/slabinfo" ] == 0 } {
unsupported "slabtop tests disabled as /proc/slabinfo is unreadable"
} else {
set slabtop_header "^ $avst Objects $used \\d+ / \\d+ ${pct}\\s+$avst Slabs $used \\d+ / \\d+ ${pct}\\s+$avst Caches $used \\d+ / \\d+ ${pct}\\s+$avst Size $used \\d+\\.\\d+K / \\d+\\.\\d+K ${pct}\\s+Minimum / Average / Maximum Object : \\d+\\.\\d+K / \\d+\\.\\d+K / \\d+\\.\\d+K\\s+OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME\\s+" set slabtop_header "^ $avst Objects $used \\d+ / \\d+ ${pct}\\s+$avst Slabs $used \\d+ / \\d+ ${pct}\\s+$avst Caches $used \\d+ / \\d+ ${pct}\\s+$avst Size $used \\d+\\.\\d+K / \\d+\\.\\d+K ${pct}\\s+Minimum / Average / Maximum Object : \\d+\\.\\d+K / \\d+\\.\\d+K / \\d+\\.\\d+K\\s+OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME\\s+"
set test "slabtop help" set test "slabtop help"
@ -14,17 +17,17 @@ spawn $slabtop --help
expect_pass $test "usage: \\S+ \\\[options\\\]" expect_pass $test "usage: \\S+ \\\[options\\\]"
set sort_tests { set sort_tests {
"a" "active objects" "^\\d+\\s+(\\d+)\\s+\\d+%\\s+\\d+\\.\\d+K\\s+\\d+\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*" "a" "active objects" "^\\s*\\d+\\s+(\\d+)\\s+\\d+%\\s+\\d+\\.\\d+K\\s+\\d+\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*"
"b" "objects per slab" "^\\s*\\d+\\s+\\d+\\s+\\d+%\\s+\\d+\\.\\d+K\\s+\\d+\\s+(\\d+)\\s+\\d+K\\s+\\S\[^\r\]+\\s*" "b" "objects per slab" "^\\s*\\d+\\s+\\d+\\s+\\d+%\\s+\\d+\\.\\d+K\\s+\\d+\\s+(\\d+)\\s+\\d+K\\s+\\S\[^\r\]+\\s*"
"c" "cache size" "^\\d+\\s+\\d+\\s+\\d+%\\s+\\d+\\.\\d+K\\s+\\d+\\s+\\d+\\s+(\\d+)K\\s+\\S\[^\r\]+\\s*" "c" "cache size" "^\\s*\\d+\\s+\\d+\\s+\\d+%\\s+\\d+\\.\\d+K\\s+\\d+\\s+\\d+\\s+(\\d+)K\\s+\\S\[^\r\]+\\s*"
"l" "number of slabs" "^\\d+\\s+\\d+\\s+\\d+%\\s+\\d+\\.\\d+K\\s+(\\d+)\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*" "l" "number of slabs" "^\\s*\\d+\\s+\\d+\\s+\\d+%\\s+\\d+\\.\\d+K\\s+(\\d+)\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*"
"o" "object count" "^(\\d+)\\s+\\d+\\s+\\d+%\\s+\\d+\\.\\d+K\\s+\\d+\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*" "o" "object count" "^\\s*(\\d+)\\s+\\d+\\s+\\d+%\\s+\\d+\\.\\d+K\\s+\\d+\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*"
"s" "object size" "^\\d+\\s+\\d+\\s+\\d+%\\s+(\\d+\\.\\d+)K\\s+\\d+\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*" "s" "object size" "^\\s*\\d+\\s+\\d+\\s+\\d+%\\s+(\\d+\\.\\d+)K\\s+\\d+\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*"
"u" "utilisation" "^\\d+\\s+\\d+\\s+(\\d+)%\\s+\\d+\\.\\d+K\\s+\\d+\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*" "u" "utilisation" "^\\s*\\d+\\s+\\d+\\s+(\\d+)%\\s+\\d+\\.\\d+K\\s+\\d+\\s+\\d+\\s+\\d+K\\s+\\S\[^\r\]+\\s*"
} }
foreach { flag desc match } $sort_tests { foreach { flag desc match } $sort_tests {
set test "slabtop sorted by $desc" set test "slabtop sorted by $desc"
spawn $slabtop -o -s $flag spawn $slabtop -o -s $flag
expect_table_dsc $test $slabtop_header $match expect_table_dsc $test $slabtop_header $match
} }
}