From ad75a8cc1a37b0aa9c9a52182aad727a4980e0b0 Mon Sep 17 00:00:00 2001 From: johannst Date: Tue, 17 Mar 2020 21:55:49 +0100 Subject: updated pidstat --- src/pidstat.md | 37 +++++++++++++++++++++++++++---------- 1 file changed, 27 insertions(+), 10 deletions(-) (limited to 'src') diff --git a/src/pidstat.md b/src/pidstat.md index c17a2e6..8fb1106 100644 --- a/src/pidstat.md +++ b/src/pidstat.md @@ -1,13 +1,30 @@ # pidstat(1) -Trace minor/major page faults. -```markdown -pidstat -r -p [interval] - minor_pagefault: happens when the page needed is already in memory but not - allocated to the faulting process, in that case the kernel - only has to create a new page-table entry pointing to the - shared physical page - major_pagefault: happends when the page needed is NOT in memory, the kernel - has to create a new page-table entry and populate the - physical page +```markdown +pidstat [opt] [interval] [cont] + -U [user] show username instead UID, optionally only show for user + -r memory statistics + -d I/O statistics +``` + +# Page fault and memory utilization +```markdown +pidstat -r -p [interval] [count] +``` + +```markdown +minor_pagefault: Happens when the page needed is already in memory but not + allocated to the faulting process, in that case the kernel + only has to create a new page-table entry pointing to the + shared physical page (not required to load a memory page from + disk). + +major_pagefault: Happens when the page needed is NOT in memory, the kernel + has to create a new page-table entry and populate the + physical page (required to load a memory page from disk). +``` + +# I/O statistics +```markdown +pidstat -d -p [interval] [count] ``` -- cgit v1.2.3