One of our physical machine shows that the "CACHE SIZE" column
of slabtop output is extremely high, three times of the products
of objs nums and objs size. After some analysis, we found that
the order of slab, which decides "pages per slab", will shrink
when memory pressure is high and normal order allocation failed.
So we think it might help to add these comments to the man help.
Minor fix: add the "memory." back, which is lost after
"aa461df0: docs: Minor manpage fixes"
Signed-off-by: Zhao Mengmeng <zhaomengmeng@kylinos.cn>
This commit just tweaks some recent copyright changes.
Foe example, the six public header files are unique to
this new library and thus are just attributed to Craig
and me. Plus, there were some misnamed file references
as '.c' for '.h' or 'libprocps' instead of 'libproc2'.
Signed-off-by: Jim Warner <james.warner@comcast.net>
The copyrights of the source files were all out of date and were not
the same format. This has been corrected. The source of the authors
was examining the git log for each file.
Signed-off-by: Craig Small <csmall@dropbear.xyz>
With Intel's 12th generation Alder Lake processors now
providing two distinct types of core, it would be nice
if the library offered some sort of clue to core type.
Well, with this patch it does. We'll have 2 additional
enumerators. One deals with the cpu's core association
and the other provides the type of that core (P or E).
[ now, all we need is for some program to exploit it ]
Signed-off-by: Jim Warner <james.warner@comcast.net>
Thanks to valgrind and his --track-origins=yes option,
the problem and solution was suggested as shown below.
[ and it was created in that commit referenced below ]
But, after attacking this problem by adding a memset()
call in pids.c, a 2nd valgrind oops, also shown below,
was encountered. The dynamically acquired 'cmd' again!
[ might help to explain why changes appear excessive ]
Reference(s):
. 1st valgrind discovery
==11111== Conditional jump or move depends on uninitialised value(s)
==11111== at 0x13425D: stat2proc (readproc.c:582)
==11111== by 0x137436: look_up_our_self (readproc.c:1613)
==11111== by 0x132196: fatal_proc_unmounted (pids.c:1388)
==11111== by 0x11BA4D: before (top.c:3580)
==11111== by 0x127E10: main (top.c:7173)
==11111== Uninitialised value was created by a stack allocation
==11111== at 0x132165: fatal_proc_unmounted (pids.c:1381)
. Jul, 2022 - fatal_proc_unmounted refactored
commit 52bd019d8c
. 2nd valgrind discovery
==22222== 16 bytes in 1 blocks are definitely lost
==22222== by 0x4A0E60E: strdup (strdup.c:42)
==22222== by 0x133D00: stat2proc (readproc.c:587)
==22222== by 0x136E67: look_up_our_self (readproc.c:1613)
==22222== by 0x131BC7: fatal_proc_unmounted (pids.c:1390)
==22222== by 0x11B7C6: before (top.c:3580)
==22222== by 0x127828: main (top.c:7173)
Signed-off-by: Jim Warner <james.warner@comcast.net>
Zhao Mengmeng
Jim Warner
Craig Small