> On Thu, 2025-06-26 at 10:32 +0800, James Pang wrote: >> thans for you suggestions, we have iowait from sar command too, copy here, checking with infra team not found abnormal IO activities either. >> 02:00:01 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle >> 02:00:03 PM all 15.92 0.00 43.02 0.65 0.76 2.56 0.00 0.00 0.00 37.09 > > Crazy high system time. > > If it is not transparent hugepages, the other suspect is fork(). Can we use starce -S to collect system call statistics to find out which system call is taking time? Best regards, -- Tatsuo Ishii SRA OSS K.K. English: http://www.sraoss.co.jp/index_en/ Japanese:http://www.sraoss.co.jp
