paging

[Tolga Evren]

Hi , 

According to the sar -B output , my system does: 

04:54:42 PM pgpgin/s pgpgout/s activepg inadtypg inaclnpg inatarpg 
04:54:45 PM 26112.33 94.33 186898 56296 3362 49311 
04:54:48 PM 24086.00 30.33 185125 61120 3363 49921 
04:54:51 PM 20554.00 125.33 182891 67445 3362 50739 

page operations per second. 

1. What is the metric used in this output? The man page says the metric 
is 'blocks' but what is the block size? How can i get this info? 

2. Does The value in pgpgin/s contain all type of paging activity? 
I mean file paging, application paging , anonymus paging. (In sun 
solaris , vmstat -p shows detailed paging information ) 

3. I use directio so basically what i know is no page cache is used for 
data pages. Is this output a proof that files are cached although i use 
directio? 

Kind Regards, 
hope