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uplex-varnish
trackrdrd
Commits
efa60a58
Commit
efa60a58
authored
Jun 09, 2015
by
Geoff Simmons
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the reader thread's idle pause is periodically adjusted to match
the VSL read rate
parent
0dd9cc3a
Changes
1
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1 changed file
with
24 additions
and
5 deletions
+24
-5
child.c
src/child.c
+24
-5
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src/child.c
View file @
efa60a58
...
...
@@ -87,6 +87,8 @@
#define DISPATCH_FLUSH 12
#define DISPATCH_WRK_ABANDONED 13
#define MAX_IDLE_PAUSE 0.01
const
char
*
version
=
PACKAGE_TARNAME
"-"
PACKAGE_VERSION
" revision "
\
VCS_Version
" branch "
VCS_Branch
;
...
...
@@ -97,6 +99,8 @@ static unsigned long seen = 0, submitted = 0, len_overflows = 0, no_data = 0,
ioerr
=
0
,
reacquire
=
0
,
truncated
=
0
,
key_hi
=
0
,
key_overflows
=
0
,
no_free_chunk
=
0
,
eol
=
0
;
static
double
idle_pause
=
MAX_IDLE_PAUSE
;
static
volatile
sig_atomic_t
flush
=
0
,
term
=
0
;
static
struct
sigaction
terminate_action
,
dump_action
,
flush_action
;
...
...
@@ -114,14 +118,15 @@ void
RDR_Stats
(
void
)
{
LOG_Log
(
LOG_INFO
,
"Reader: seen=%lu submitted=%lu nodata=%lu eol=%lu "
"idle_pause=%.09f "
"free_rec=%u free_chunk=%u no_free_rec=%lu no_free_chunk=%lu "
"len_hi=%u key_hi=%lu len_overflows=%lu truncated=%lu "
"key_overflows=%lu vcl_log_err=%lu vsl_err=%lu closed=%lu "
"overrun=%lu ioerr=%lu reacquire=%lu"
,
seen
,
submitted
,
no_data
,
eol
,
rdr_rec_free
,
rdr_chunk
_free
,
no_free_data
,
no_free_chunk
,
len_hi
,
key_hi
,
len_overflows
,
truncated
,
key_overflows
,
vcl_log_err
,
vsl_errs
,
closed
,
overrun
,
ioerr
,
reacquire
);
seen
,
submitted
,
no_data
,
eol
,
idle_pause
,
rdr_rec
_free
,
rdr_chunk_free
,
no_free_data
,
no_free_chunk
,
len_hi
,
key_hi
,
len_overflows
,
truncated
,
key_overflows
,
vcl_log_err
,
vsl_errs
,
closed
,
overrun
,
ioerr
,
reacquire
);
}
int
...
...
@@ -596,6 +601,8 @@ CHILD_Main(int readconfig)
struct
VSLQ
*
vslq
;
struct
VSM_data
*
vsm
=
NULL
;
struct
VSL_cursor
*
cursor
;
unsigned
long
last_seen
=
0
;
double
last_t
;
MON_StatsInit
();
debug
=
(
LOG_GetLevel
()
==
LOG_DEBUG
);
...
...
@@ -788,6 +795,7 @@ CHILD_Main(int readconfig)
LOG_Log0
(
LOG_INFO
,
"Worker threads not running"
);
/* Main loop */
last_t
=
VTIM_mono
();
term
=
0
;
while
(
!
term
)
{
status
=
VSLQ_Dispatch
(
vslq
,
dispatch
,
NULL
);
...
...
@@ -799,7 +807,18 @@ CHILD_Main(int readconfig)
case
DISPATCH_EOL
:
take_free
();
eol
++
;
VTIM_sleep
(
config
.
idle_pause
);
/* re-adjust idle pause every 1024 seen txn */
if
(
seen
>>
10
>
last_seen
)
{
double
t
=
VTIM_mono
();
idle_pause
=
(
t
-
last_t
)
/
(
double
)
(
seen
-
(
last_seen
<<
10
));
last_seen
=
seen
>>
10
;
if
(
idle_pause
>
MAX_IDLE_PAUSE
)
idle_pause
=
MAX_IDLE_PAUSE
;
if
(
idle_pause
<
1e-9
)
idle_pause
=
1e-9
;
last_t
=
t
;
}
VTIM_sleep
(
idle_pause
);
break
;
case
DISPATCH_TERMINATE
:
AN
(
term
);
...
...
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