Re: [CentOS] Disk read io very high, but no process perform io read

2021-03-11 Thread J Martin Rushton via CentOS
I haven't been following this thread closely, so may be off target. When pages are moved out of the working set they are either "clean" or "dirty". Clean pages have not been modified since they were originally moved into memory whereas dirty pages have been changed. A dirty page can become c

Re: [CentOS] Disk read io very high, but no process perform io read

2021-03-11 Thread yf chu
yes. I suspect it has something to do with swapping. but swap is turned off on this server. here is the result of free -m. totalusedfree shared buff/cache available Mem: 128174 97449 2440041586325 25232 Swap: 0

Re: [CentOS] Disk read io very high, but no process perform io read

2021-03-11 Thread yf chu
yes. I suspect it has something to do with swapping. but swap is turned off on this server. here is the result of free -m. totalusedfree shared buff/cache available Mem: 128174 97449 2440041586325 25232 Swap: 0