// Cpu
void TCpuSubsystem::InitializeSubsystem() {
TCgroup cg = RootCgroup();
HasShares = cg.Has("cpu.shares");
if (HasShares && cg.GetUint64("cpu.shares", BaseShares))
BaseShares = 1024;
HasQuota = cg.Has("cpu.cfs_quota_us") &&
cg.Has("cpu.cfs_period_us");
HasReserve = HasShares && HasQuota &&
cg.Has("cpu.cfs_reserve_us") &&
cg.Has("cpu.cfs_reserve_shares");
if (HasQuota && cg.GetUint64("cpu.cfs_period_us", BasePeriod))
BasePeriod = 100000;
HasSmart = cg.Has("cpu.smart");
L_SYS() << GetNumCores() << " cores" << std::endl;
if (HasShares)
L_SYS() << "base shares " << BaseShares << std::endl;
if (HasQuota)
L_SYS() << "quota period " << BasePeriod << std::endl;
if (HasReserve)
L_SYS() << "support reserves" << std::endl;
if (HasSmart)
L_SYS() << "support smart" << std::endl;
}
TError TBlkioSubsystem::SetPolicy(TCgroup &cg, bool batch) {
if (!SupportPolicy())
return TError::Success();
std::string rootWeight;
if (!batch) {
TError error = RootCgroup().Get("blkio.weight", rootWeight);
if (error)
return TError(EError::Unknown, "Can't get root blkio.weight");
}
return cg.Set("blkio.weight", batch ? std::to_string(config().container().batch_io_weight()) : rootWeight);
}
bool SupportRechargeOnPgfault() const {
return RootCgroup().Has(RECHARGE_ON_PAGE_FAULT);
}
bool SupportSwap() const {
return RootCgroup().Has(MEM_SWAP_LIMIT);
}
bool SupportDirtyLimit() const {
return RootCgroup().Has(DIRTY_LIMIT);
}
bool SupportIoLimit() const {
return RootCgroup().Has(FS_BPS_LIMIT);
}
bool SupportGuarantee() const {
return RootCgroup().Has(LOW_LIMIT);
}
bool SupportGigaPages() const {
return RootCgroup().Has(GIGA_LIMIT);
}
/* for now supports only 2MB pages */
void InitializeSubsystem() override {
Supported = RootCgroup().Has(HUGE_LIMIT);
}
void InitializeSubsystem() override {
HasWeight = RootCgroup().Has("blkio.weight");
HasThrottler = RootCgroup().Has("blkio.throttle.read_bps_device");
if (RootCgroup().GetBool("cgroup.sane_behavior", HasSaneBehavior))
HasSaneBehavior = false;
}
bool TBlkioSubsystem::SupportPolicy() {
return RootCgroup().Has("blkio.weight");
}
