WebJun 1, 2016 · backend cycles idle metrics in standard perf stat output. These metrics are not reliable in many workloads, due to out of order effects. This implements a new - … WebDec 13, 2024 · LZMA compression (used in 7-zip, XZ, LZMA2) is known as one of the best, but it has a noticeable drawback - it's slow. I tried to improve the decompression speed by removing excessive branching at decoding of every bit from the compressed data. Decompression speedup from this patch largely depends on the compression ratio, more …
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WebThere are some advanced metrics now included in perf stat: frontend cycles idle, backend cycles idle, and stalled cycles per insn. To really understand these, you'll need some knowledge of CPU … WebMar 27, 2014 · I'm not aware of any documentation that presents these events as accurate frontend/backend stalls without using the full TopDown methology (Optimization manual B.3.2) So IIUC stalled-cycles-backend … current time in tillamook oregon
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WebOct 17, 2014 · On Linux you can use the taskset command to pin a process to a CPU core. First you need to discover the native ID for the Java thread you want to pin. The steps for doing that are: 1) Get the Java process ID (this assumes you have 1 Java process) pgrep java. 2) Use the jstack tool to create a thread dump for the Java process ID. jstack -l . WebSep 17, 2015 · 5390305425 stalled-cycles-frontend # 66.34% frontend cycles idle ( +- 0.20% ) stalled-cycles-backend 4674395417 instructions # 0.58 insns per cycle # 1.15 stalled cycles per insn ( +- 0.02% ) 857245553 branches # 323.886 M/sec ( +- … current time in trussville al