Can you please share the Impalad.INFO log file from the coordinator? Thanks Mostafa
> On May 18, 2018, at 8:36 PM, 蒋鸿翔 <[email protected]> wrote: > > Hi guys: > > Our team want to test the apache impala(ver: 2.10.0) by TPCH, when running > on 20 concurrent queries against 24 dell PowerEdge R730, We found the test > cause lots of system cpu for a very long time, and no query completed > successfully. I don't known what happens, who can give me some advice? > > some information output by top command: > > %Cpu0 : 1.6 us, 84.8 sy, 0.0 ni, 13.6 id, 0.0 wa, 0.0 hi, 0.0 si, > 0.0 st > %Cpu1 : 0.4 us, 86.0 sy, 0.0 ni, 13.6 id, 0.0 wa, 0.0 hi, 0.0 si, > 0.0 st > %Cpu2 : 0.6 us, 86.0 sy, 0.0 ni, 13.4 id, 0.0 wa, 0.0 hi, 0.0 si, > 0.0 st > %Cpu3 : 0.0 us, 86.2 sy, 0.0 ni, 13.8 id, 0.0 wa, 0.0 hi, 0.0 si, > 0.0 st > %Cpu4 : 0.6 us, 87.1 sy, 0.0 ni, 12.3 id, 0.0 wa, 0.0 hi, 0.0 si, > 0.0 st > %Cpu5 : 1.0 us, 86.3 sy, 0.0 ni, 12.7 id, 0.0 wa, 0.0 hi, 0.0 si, > 0.0 st > %Cpu6 : 0.4 us, 86.0 sy, 0.0 ni, 13.6 id, 0.0 wa, 0.0 hi, 0.0 si, > 0.0 st > ..... > > use "perf top" to see what happens: > > 84.24% [kernel] [k] KSTK_ESP > > 7.26% [kernel] [k] cpu_startup_entry > > 5.56% [kernel] [k] vm_is_stack > > 0.20% [kernel] [k] number.isra.2 > > 0.18% [kernel] [k] format_decode > ........
