and periodically estimates operator selectivities. • The load shedder assigns a cost, ci, in cycles per tuple, and a selectivity, si, to each operator i. • The statistics manager collects metrics c=10 s=0.8 c=5 s=1.0 O1 c=10 s=0.9 L1=26.5 5 14 5 5 19 5 r1=10 r/s r2=20 r/s LT=640 cycles/s ??? Vasiliki Kalavri | Boston University 2020 Reacting to overload • Where in the query plan

child's performance is recorded and the oldest model from is discarded. This process is repeated for cycles. There are two main mutations used in the mutation step: hidden state mutation and the operation hidden state is picked at random and is replaced with another hidden state in the cell such that no cycles are created. For operation mutation, a primitive operation in the block is replaced with a randomly

compute, storage, network. This allows cloud providers to have independent feature and patch release cycles, learn how SIG VMware is working to meet this new model on VMware platforms. Agenda 4 What is

HPAn HPA1 1. HPA can be turned on/off separately 2. Support for separate configuration of compute cycles 3. Support configuring tolerance for each HPA separately 4. Support Cron HPA An HPA corresponds

pytorch -c pytorch • Others via pip: pip3 install torch • ???????????? On Princeton CS server (ssh cycles.cs.princeton.edu) • Non-CS students can request a class account. • Miniconda is highly recommended

vertex in V (no edges between vertices in the same part). A bipartite graph has no odd-length cycles (thus, no triangles). 39 Bipartite graph checking ??? Vasiliki Kalavri | Boston University 2020

operator must be available on a single host. • Avoid infinite recursion: caution if there exist cycles in the stream graph. Operator fusion A Avoid the overhead of serialization and transport B A

ACPI 主机的能源消耗。 kepler_container_bpf_cpu_time_us_total 使用 BPF 跟踪的容器使用的总 CPU 时间。 kepler_container_cpu_cycles_total 使用硬件计数器的容器使用的总 CPU 周期。CPU 周 期是与 CPU 频率直接相关的指标。在处理器以固定频 率运行的系统上，CPU 周期和总 CPU 时间大致等 同。在处理器运行的系统中，CPU

gist164。 表12.4.1: 常见延迟。 Action Time Notes L1 cache reference/hit 1.5 ns 4 cycles Floating‐point add/mult/FMA 1.5 ns 4 cycles continues on next page 159 https://aws.amazon.com/ec2/instance‐types/c5/ reference/hit 5 ns 12 ~ 17 cycles Branch mispredict 6 ns 15 ~ 20 cycles L3 cache hit (unshared cache) 16 ns 42 cycles L3 cache hit (shared in another core) 25 ns 65 cycles Mutex lock/unlock 25 ns L3 L3 cache hit (modified in another core) 29 ns 75 cycles L3 cache hit (on a remote CPU socket) 40 ns 100 ~ 300 cycles (40 ~ 116 ns) QPI hop to a another CPU (per hop) 40 ns 64MB memory ref. (local CPU)

unsigned long IMachine::CPUExecutionCap Means to limit the number of CPU cycles a guest can use. The unit is percentage of host CPU cycles per second. The valid range is 1 - 100. 100 (the default) implies no Note that the address of a USB device may change across device re-plugs and host suspend/resume cycles or reboots. 5.177.1.9 port (read-only) unsigned short IUSBDevice::port Host USB port number on