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authorLennart Poettering <lennart@poettering.net>2014-05-22 11:53:12 +0900
committerLennart Poettering <lennart@poettering.net>2014-05-22 11:53:12 +0900
commit9a0549093332880df47c4218209ce126b8586835 (patch)
tree3f929d8ef12b580f5c6ed91b7316bbbac4d4a299 /src/core
parent609e002e78e79ef2bf9d6a6ea22bda215abbbb14 (diff)
cgroups: simplify CPUQuota= logic
Only accept cpu quota values in percentages, get rid of period definition. It's not clear whether the CFS period controllable per-cgroup even has a future in the kernel, hence let's simplify all this, hardcode the period to 100ms and only accept percentage based quota values.
Diffstat (limited to 'src/core')
-rw-r--r--src/core/cgroup.c47
-rw-r--r--src/core/cgroup.h5
-rw-r--r--src/core/dbus-cgroup.c61
-rw-r--r--src/core/load-fragment-gperf.gperf.m43
-rw-r--r--src/core/load-fragment.c28
-rw-r--r--src/core/main.c3
-rw-r--r--src/core/manager.c1
-rw-r--r--src/core/manager.h1
-rw-r--r--src/core/system.conf1
-rw-r--r--src/core/unit.c1
10 files changed, 19 insertions, 132 deletions
diff --git a/src/core/cgroup.c b/src/core/cgroup.c
index 36e9f53db8..cd6796383b 100644
--- a/src/core/cgroup.c
+++ b/src/core/cgroup.c
@@ -27,6 +27,8 @@
#include "cgroup-util.h"
#include "cgroup.h"
+#define CGROUP_CPU_QUOTA_PERIOD_USEC ((usec_t) 100 * USEC_PER_MSEC)
+
void cgroup_context_init(CGroupContext *c) {
assert(c);
@@ -40,8 +42,6 @@ void cgroup_context_init(CGroupContext *c) {
c->startup_blockio_weight = (unsigned long) -1;
c->cpu_quota_per_sec_usec = (usec_t) -1;
- c->cpu_quota_usec = (usec_t) -1;
- c->cpu_quota_period_usec = 100*USEC_PER_MSEC;
}
void cgroup_context_free_device_allow(CGroupContext *c, CGroupDeviceAllow *a) {
@@ -84,37 +84,11 @@ void cgroup_context_done(CGroupContext *c) {
cgroup_context_free_device_allow(c, c->device_allow);
}
-usec_t cgroup_context_get_cpu_quota_usec(CGroupContext *c) {
- assert(c);
-
- /* Returns the absolute CPU quota */
-
- if (c->cpu_quota_usec != (usec_t) -1)
- return c->cpu_quota_usec;
- else if (c->cpu_quota_per_sec_usec != (usec_t) -1)
- return c->cpu_quota_per_sec_usec*c->cpu_quota_period_usec/USEC_PER_SEC;
- else
- return (usec_t) -1;
-}
-
-usec_t cgroup_context_get_cpu_quota_per_sec_usec(CGroupContext *c) {
- assert(c);
-
- /* Returns the CPU quota relative to 1s */
-
- if (c->cpu_quota_usec != (usec_t) -1)
- return c->cpu_quota_usec*USEC_PER_SEC/c->cpu_quota_period_usec;
- else if (c->cpu_quota_per_sec_usec != (usec_t) -1)
- return c->cpu_quota_per_sec_usec;
- else
- return (usec_t) -1;
-}
-
void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
CGroupBlockIODeviceBandwidth *b;
CGroupBlockIODeviceWeight *w;
CGroupDeviceAllow *a;
- char t[FORMAT_TIMESPAN_MAX], s[FORMAT_TIMESPAN_MAX], u[FORMAT_TIMESPAN_MAX];
+ char u[FORMAT_TIMESPAN_MAX];
assert(c);
assert(f);
@@ -127,9 +101,7 @@ void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
"%sMemoryAccounting=%s\n"
"%sCPUShares=%lu\n"
"%sStartupCPUShares=%lu\n"
- "%sCPUQuota=%s\n"
"%sCPUQuotaPerSecSec=%s\n"
- "%sCPUQuotaPeriodSec=%s\n"
"%sBlockIOWeight=%lu\n"
"%sStartupBlockIOWeight=%lu\n"
"%sMemoryLimit=%" PRIu64 "\n"
@@ -139,9 +111,7 @@ void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix) {
prefix, yes_no(c->memory_accounting),
prefix, c->cpu_shares,
prefix, c->startup_cpu_shares,
- prefix, strna(format_timespan(u, sizeof(u), cgroup_context_get_cpu_quota_usec(c), 1)),
- prefix, strna(format_timespan(t, sizeof(t), cgroup_context_get_cpu_quota_per_sec_usec(c), 1)),
- prefix, strna(format_timespan(s, sizeof(s), c->cpu_quota_period_usec, 1)),
+ prefix, strna(format_timespan(u, sizeof(u), c->cpu_quota_per_sec_usec, 1)),
prefix, c->blockio_weight,
prefix, c->startup_blockio_weight,
prefix, c->memory_limit,
@@ -328,7 +298,6 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha
if ((mask & CGROUP_CPU) && !is_root) {
char buf[MAX(DECIMAL_STR_MAX(unsigned long), DECIMAL_STR_MAX(usec_t)) + 1];
- usec_t q;
sprintf(buf, "%lu\n",
state == MANAGER_STARTING && c->startup_cpu_shares != (unsigned long) -1 ? c->startup_cpu_shares :
@@ -337,14 +306,13 @@ void cgroup_context_apply(CGroupContext *c, CGroupControllerMask mask, const cha
if (r < 0)
log_warning("Failed to set cpu.shares on %s: %s", path, strerror(-r));
- sprintf(buf, USEC_FMT "\n", c->cpu_quota_period_usec);
+ sprintf(buf, USEC_FMT "\n", CGROUP_CPU_QUOTA_PERIOD_USEC);
r = cg_set_attribute("cpu", path, "cpu.cfs_period_us", buf);
if (r < 0)
log_warning("Failed to set cpu.cfs_period_us on %s: %s", path, strerror(-r));
- q = cgroup_context_get_cpu_quota_usec(c);
- if (q != (usec_t) -1) {
- sprintf(buf, USEC_FMT "\n", q);
+ if (c->cpu_quota_per_sec_usec != (usec_t) -1) {
+ sprintf(buf, USEC_FMT "\n", c->cpu_quota_per_sec_usec * CGROUP_CPU_QUOTA_PERIOD_USEC / USEC_PER_SEC);
r = cg_set_attribute("cpu", path, "cpu.cfs_quota_us", buf);
} else
r = cg_set_attribute("cpu", path, "cpu.cfs_quota_us", "-1");
@@ -479,7 +447,6 @@ CGroupControllerMask cgroup_context_get_mask(CGroupContext *c) {
if (c->cpu_accounting ||
c->cpu_shares != (unsigned long) -1 ||
c->startup_cpu_shares != (unsigned long) -1 ||
- c->cpu_quota_usec != (usec_t) -1 ||
c->cpu_quota_per_sec_usec != (usec_t) -1)
mask |= CGROUP_CPUACCT | CGROUP_CPU;
diff --git a/src/core/cgroup.h b/src/core/cgroup.h
index 44482c508d..d299872b1f 100644
--- a/src/core/cgroup.h
+++ b/src/core/cgroup.h
@@ -73,8 +73,6 @@ struct CGroupContext {
unsigned long cpu_shares;
unsigned long startup_cpu_shares;
usec_t cpu_quota_per_sec_usec;
- usec_t cpu_quota_usec;
- usec_t cpu_quota_period_usec;
unsigned long blockio_weight;
unsigned long startup_blockio_weight;
@@ -102,9 +100,6 @@ void cgroup_context_free_device_allow(CGroupContext *c, CGroupDeviceAllow *a);
void cgroup_context_free_blockio_device_weight(CGroupContext *c, CGroupBlockIODeviceWeight *w);
void cgroup_context_free_blockio_device_bandwidth(CGroupContext *c, CGroupBlockIODeviceBandwidth *b);
-usec_t cgroup_context_get_cpu_quota_usec(CGroupContext *c);
-usec_t cgroup_context_get_cpu_quota_per_sec_usec(CGroupContext *c);
-
CGroupControllerMask unit_get_cgroup_mask(Unit *u);
CGroupControllerMask unit_get_siblings_mask(Unit *u);
CGroupControllerMask unit_get_members_mask(Unit *u);
diff --git a/src/core/dbus-cgroup.c b/src/core/dbus-cgroup.c
index ce7e55cb7f..eb7c2b9d27 100644
--- a/src/core/dbus-cgroup.c
+++ b/src/core/dbus-cgroup.c
@@ -133,24 +133,6 @@ static int property_get_device_allow(
return sd_bus_message_close_container(reply);
}
-static int property_get_cpu_quota_usec(
- sd_bus *bus,
- const char *path,
- const char *interface,
- const char *property,
- sd_bus_message *reply,
- void *userdata,
- sd_bus_error *error) {
-
- CGroupContext *c = userdata;
-
- assert(bus);
- assert(reply);
- assert(c);
-
- return sd_bus_message_append(reply, "t", cgroup_context_get_cpu_quota_usec(c));
-}
-
static int property_get_cpu_quota_per_sec_usec(
sd_bus *bus,
const char *path,
@@ -166,7 +148,7 @@ static int property_get_cpu_quota_per_sec_usec(
assert(reply);
assert(c);
- return sd_bus_message_append(reply, "t", cgroup_context_get_cpu_quota_per_sec_usec(c));
+ return sd_bus_message_append(reply, "t", c->cpu_quota_per_sec_usec);
}
static int property_get_ulong_as_u64(
@@ -193,8 +175,6 @@ const sd_bus_vtable bus_cgroup_vtable[] = {
SD_BUS_PROPERTY("CPUShares", "t", property_get_ulong_as_u64, offsetof(CGroupContext, cpu_shares), 0),
SD_BUS_PROPERTY("StartupCPUShares", "t", property_get_ulong_as_u64, offsetof(CGroupContext, startup_cpu_shares), 0),
SD_BUS_PROPERTY("CPUQuotaPerSecUSec", "t", property_get_cpu_quota_per_sec_usec, 0, 0),
- SD_BUS_PROPERTY("CPUQuotaUSec", "t", property_get_cpu_quota_usec, 0, 0),
- SD_BUS_PROPERTY("CPUQuotaPeriodUSec", "t", bus_property_get_usec, offsetof(CGroupContext, cpu_quota_period_usec), 0),
SD_BUS_PROPERTY("BlockIOAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, blockio_accounting), 0),
SD_BUS_PROPERTY("BlockIOWeight", "t", property_get_ulong_as_u64, offsetof(CGroupContext, blockio_weight), 0),
SD_BUS_PROPERTY("StartupBlockIOWeight", "t", property_get_ulong_as_u64, offsetof(CGroupContext, startup_blockio_weight), 0),
@@ -298,51 +278,12 @@ int bus_cgroup_set_property(
if (mode != UNIT_CHECK) {
c->cpu_quota_per_sec_usec = u64;
- c->cpu_quota_usec = (uint64_t) -1;
u->cgroup_realized_mask &= ~CGROUP_CPU;
unit_write_drop_in_private_format(u, mode, "CPUQuota", "CPUQuota=%0.f%%", (double) (c->cpu_quota_per_sec_usec / 10000));
}
return 1;
- } else if (streq(name, "CPUQuotaUSec")) {
- uint64_t u64;
-
- r = sd_bus_message_read(message, "t", &u64);
- if (r < 0)
- return r;
-
- if (u64 <= 0)
- return sd_bus_error_set_errnof(error, EINVAL, "CPUQuotaUSec value out of range");
-
- if (mode != UNIT_CHECK) {
- c->cpu_quota_usec = u64;
- c->cpu_quota_per_sec_usec = (uint64_t) -1;
- u->cgroup_realized_mask &= ~CGROUP_CPU;
- unit_write_drop_in_private_format(u, mode, "CPUQuota", "CPUQuota=%" PRIu64 "us", u64);
- }
-
- return 1;
-
- } else if (streq(name, "CPUQuotaPeriodUSec")) {
-
- uint64_t u64;
-
- r = sd_bus_message_read(message, "t", &u64);
- if (r < 0)
- return r;
-
- if (u64 <= 0 || u64 >= (usec_t) -1)
- return sd_bus_error_set_errnof(error, EINVAL, "CPUQuotaPeriodUSec value out of range");
-
- if (mode != UNIT_CHECK) {
- c->cpu_quota_period_usec = u64;
- u->cgroup_realized_mask &= ~CGROUP_CPU;
- unit_write_drop_in_private_format(u, mode, name, "CPUQuotaPeriodSec=%" PRIu64 "us", c->cpu_quota_period_usec);
- }
-
- return 1;
-
} else if (streq(name, "BlockIOAccounting")) {
int b;
diff --git a/src/core/load-fragment-gperf.gperf.m4 b/src/core/load-fragment-gperf.gperf.m4
index 524e5c76d2..4c066a8b96 100644
--- a/src/core/load-fragment-gperf.gperf.m4
+++ b/src/core/load-fragment-gperf.gperf.m4
@@ -108,14 +108,13 @@ $1.CPUAccounting, config_parse_bool, 0,
$1.CPUShares, config_parse_cpu_shares, 0, offsetof($1, cgroup_context.cpu_shares)
$1.StartupCPUShares, config_parse_cpu_shares, 0, offsetof($1, cgroup_context.startup_cpu_shares)
$1.CPUQuota, config_parse_cpu_quota, 0, offsetof($1, cgroup_context)
-$1.CPUQuotaPeriodSec, config_parse_sec, 0, offsetof($1, cgroup_context.cpu_quota_period_usec)
$1.MemoryAccounting, config_parse_bool, 0, offsetof($1, cgroup_context.memory_accounting)
$1.MemoryLimit, config_parse_memory_limit, 0, offsetof($1, cgroup_context)
$1.DeviceAllow, config_parse_device_allow, 0, offsetof($1, cgroup_context)
$1.DevicePolicy, config_parse_device_policy, 0, offsetof($1, cgroup_context.device_policy)
$1.BlockIOAccounting, config_parse_bool, 0, offsetof($1, cgroup_context.blockio_accounting)
$1.BlockIOWeight, config_parse_blockio_weight, 0, offsetof($1, cgroup_context.blockio_weight)
-$1.StartupBlockIOWeight, config_parse_blockio_weight, 0, offsetof($1, cgroup_context.startup_blockio_weight)
+$1.StartupBlockIOWeight, config_parse_blockio_weight, 0, offsetof($1, cgroup_context.startup_blockio_weight)
$1.BlockIODeviceWeight, config_parse_blockio_device_weight, 0, offsetof($1, cgroup_context)
$1.BlockIOReadBandwidth, config_parse_blockio_bandwidth, 0, offsetof($1, cgroup_context)
$1.BlockIOWriteBandwidth, config_parse_blockio_bandwidth, 0, offsetof($1, cgroup_context)'
diff --git a/src/core/load-fragment.c b/src/core/load-fragment.c
index 7c5b49c85b..6403e41113 100644
--- a/src/core/load-fragment.c
+++ b/src/core/load-fragment.c
@@ -2465,7 +2465,7 @@ int config_parse_cpu_quota(
void *userdata) {
CGroupContext *c = data;
- int r;
+ double percent;
assert(filename);
assert(lvalue);
@@ -2473,30 +2473,22 @@ int config_parse_cpu_quota(
if (isempty(rvalue)) {
c->cpu_quota_per_sec_usec = (usec_t) -1;
- c->cpu_quota_usec = (usec_t) -1;
return 0;
}
- if (endswith(rvalue, "%")) {
- double percent;
-
- if (sscanf(rvalue, "%lf%%", &percent) != 1 || percent <= 0) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL, "CPU quota '%s' invalid. Ignoring.", rvalue);
- return 0;
- }
+ if (!endswith(rvalue, "%")) {
- c->cpu_quota_per_sec_usec = (usec_t) (percent * USEC_PER_SEC / 100);
- c->cpu_quota_usec = (usec_t) -1;
- } else {
- r = parse_sec(rvalue, &c->cpu_quota_usec);
- if (r < 0) {
- log_syntax(unit, LOG_ERR, filename, line, EINVAL, "CPU quota '%s' invalid. Ignoring.", rvalue);
- return 0;
- }
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL, "CPU quota '%s' not ending in '%%'. Ignoring.", rvalue);
+ return 0;
+ }
- c->cpu_quota_per_sec_usec = (usec_t) -1;
+ if (sscanf(rvalue, "%lf%%", &percent) != 1 || percent <= 0) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL, "CPU quota '%s' invalid. Ignoring.", rvalue);
+ return 0;
}
+ c->cpu_quota_per_sec_usec = (usec_t) (percent * USEC_PER_SEC / 100);
+
return 0;
}
diff --git a/src/core/main.c b/src/core/main.c
index c1b0ffd9bb..74c50f51be 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -109,7 +109,6 @@ static struct rlimit *arg_default_rlimit[_RLIMIT_MAX] = {};
static uint64_t arg_capability_bounding_set_drop = 0;
static nsec_t arg_timer_slack_nsec = (nsec_t) -1;
static usec_t arg_default_timer_accuracy_usec = 1 * USEC_PER_MINUTE;
-static usec_t arg_default_cpu_quota_period_usec = 100 * USEC_PER_MSEC;
static Set* arg_syscall_archs = NULL;
static FILE* arg_serialization = NULL;
static bool arg_default_cpu_accounting = false;
@@ -684,7 +683,6 @@ static int parse_config_file(void) {
#endif
{ "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
{ "Manager", "DefaultTimerAccuracySec", config_parse_sec, 0, &arg_default_timer_accuracy_usec },
- { "Manager", "DefaultCPUQuotaPeriodSec", config_parse_sec, 0, &arg_default_cpu_quota_period_usec },
{ "Manager", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
{ "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
{ "Manager", "DefaultTimeoutStartSec", config_parse_sec, 0, &arg_default_timeout_start_usec },
@@ -1619,7 +1617,6 @@ int main(int argc, char *argv[]) {
m->confirm_spawn = arg_confirm_spawn;
m->default_timer_accuracy_usec = arg_default_timer_accuracy_usec;
- m->default_cpu_quota_period_usec = arg_default_cpu_quota_period_usec;
m->default_std_output = arg_default_std_output;
m->default_std_error = arg_default_std_error;
m->default_restart_usec = arg_default_restart_usec;
diff --git a/src/core/manager.c b/src/core/manager.c
index 297574641c..0cb2044325 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -429,7 +429,6 @@ int manager_new(SystemdRunningAs running_as, Manager **_m) {
m->running_as = running_as;
m->exit_code = _MANAGER_EXIT_CODE_INVALID;
m->default_timer_accuracy_usec = USEC_PER_MINUTE;
- m->default_cpu_quota_period_usec = 100 * USEC_PER_MSEC;
m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
diff --git a/src/core/manager.h b/src/core/manager.h
index ab4cafc3ae..f2c1b0d227 100644
--- a/src/core/manager.h
+++ b/src/core/manager.h
@@ -243,7 +243,6 @@ struct Manager {
bool default_cpu_accounting;
bool default_memory_accounting;
bool default_blockio_accounting;
- usec_t default_cpu_quota_period_usec;
usec_t default_timer_accuracy_usec;
diff --git a/src/core/system.conf b/src/core/system.conf
index 4d775fafb6..65a35a0689 100644
--- a/src/core/system.conf
+++ b/src/core/system.conf
@@ -24,7 +24,6 @@
#SystemCallArchitectures=
#TimerSlackNSec=
#DefaultTimerAccuracySec=1min
-#DefaultCPUQuotaPeriodSec=100ms
#DefaultStandardOutput=journal
#DefaultStandardError=inherit
#DefaultTimeoutStartSec=90s
diff --git a/src/core/unit.c b/src/core/unit.c
index 99ee709efd..3f862aa4c4 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -121,7 +121,6 @@ static void unit_init(Unit *u) {
cc->cpu_accounting = u->manager->default_cpu_accounting;
cc->blockio_accounting = u->manager->default_blockio_accounting;
cc->memory_accounting = u->manager->default_memory_accounting;
- cc->cpu_quota_period_usec = u->manager->default_cpu_quota_period_usec;
}
ec = unit_get_exec_context(u);