Date: Tue, 17 Mar 2015 18:09:35 +0000 From: "Gumpula, Suresh" <Suresh.Gumpula@netapp.com> To: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org> Subject: Re: BSD 8.1 and 9.1 memory increase Message-ID: <D12DE5F8.2F3FE%gsuresh@netapp.com> In-Reply-To: <D12DE5E5.2F3FB%gsuresh@netapp.com> References: <D12DE5E5.2F3FB%gsuresh@netapp.com>
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On similar notes , when I looked at procstat -v , it does not show us the =
shared libraries resident usage .
I have added a column to display the shared resident count.
kern_proc.c:
if (obj->shadow_count > 1)
kve->kve_shared_resident =3D
obj->resident_page_count;
procstat_vm.c :
if (kve->kve_private_resident || kve->kve_shared_resident)
entry_total =3D(kve->kve_private_resident + kve->kv=
e_shared_resident);
else
entry_total =3D kve->kve_resident;
proc_total +=3D entry_total;
shared_total +=3D kve->kve_shared_resident;
private_total +=3D kve->kve_private_resident;
mapped_total +=3D kve->kve_resident;
printf("%8d ", kve->kve_shared_resident);
printf("%8d ", entry_total);
% sudo procstat -v `pgrep bash`
PID START END PRT RES PRES SHRD =
TOTAL REF SHD FL TP PATH
3485 0x400000 0x4b0000 r-x 128 151 0 =
151 2 1 CN-- vn /usr/bin/bash
3485 0x6b0000 0x6b9000 rw- 9 0 0 =
9 1 0 C--- vn /usr/bin/bash
3485 0x6b9000 0x800000 rw- 5 0 0 =
5 1 0 C--- df
3485 0x8006b0000 0x8006c9000 r-x 25 0 0 =
25 38 0 CN-- vn /libexec/ld-elf.so.1
3485 0x8006c9000 0x8006ef000 rw- 26 0 0 =
26 1 0 CN-- df
3485 0x8008c8000 0x8008ca000 rw- 2 0 0 =
2 1 0 CN-- df
3485 0x8008ca000 0x800914000 r-x 40 0 79 =
79 6 3 CN-- vn /lib/libncurses.so.8
3485 0x800914000 0x800b14000 --- 0 0 0 =
0 1 0 CN-- df
3485 0x800b14000 0x800b19000 rw- 5 0 0 =
5 1 0 CN-- vn /lib/libncurses.so.8
3485 0x800b19000 0x800c71000 r-x 318 0 331 =
331 75 37 CN-- vn /lib/libc.so.7
3485 0x800c71000 0x800e71000 --- 0 0 0 =
0 1 0 CN-- df
3485 0x800e71000 0x800e7c000 rw- 11 0 0 =
11 1 0 CN-- vn /lib/libc.so.7
3485 0x800e7c000 0x800ee2000 rw- 9 0 0 =
9 1 0 CN-- df
3485 0x801000000 0x801200000 rw- 35 0 0 =
35 1 0 C--- df
3485 0x7ffffffdf000 0x7ffffffff000 rw- 5 0 0 =
5 1 0 C--D df
3485 0x7ffffffff000 0x800000000000 r-x 1 0 0 =
1 40 0 CN-- ph
Totals(pages) 619 151 410 =
694
Can somebody pick up this change if it looks good ?
Thanks
Suresh
From: <Gumpula>, suresh gumpula <suresh.gumpula@netapp.com<mailto:suresh.gu=
mpula@netapp.com>>
Date: Tuesday, March 17, 2015 at 2:08 PM
To: "freebsd-hackers@freebsd.org<mailto:freebsd-hackers@freebsd.org>" <free=
bsd-hackers@freebsd.org<mailto:freebsd-hackers@freebsd.org>>
Subject: BSD 8.1 and 9.1 memory increase
Hello VM experts,
I am trying to figure out what has been changed from 8.1 to 9.1 which r=
esults more memory footprint on all processes. looking at one of the big pr=
ocesses we have on a idle machine,
its about 35M resident size increase. Looking at map entries by procstat -=
v shows me that two libraries , one is our internal library(libmgwd) and ot=
her one is boost consume more now.
There are no changes made with respect to process, just comparing after the=
upgrade to 9.1.
Are here any knows things with respect VM have been changed and could resul=
t in more resident memory ? Can somebody please help on this to know what e=
xactly causing this behaviour ?
Details below.
Thank you!
8.1
=97
% sudo procstat -v `pgrep mgwd`
PID START END PRT RES PRES REF SHD FL TP P=
ATH
2213 0x800a46000 0x807b41000 r-x 18209 22827 2 1 CN vn /=
usr/lib/libmgwd.so.1
2213 0x807d40000 0x808a90000 rw- 3019 0 1 0 C- vn /=
usr/lib/libmgwd.so.1
2213 0x833406000 0x833407000 rw- 1 0 1 0 CN vn /us=
r/lib/libboost_atomic.so.1.56.0
2213 0x833600000 0x835600000 rw- 8134 0 1 0 C- df
2213 0x835600000 0x835800000 rw- 20 0 1 0 -- df
2213 0x7ffff6f99000 0x7ffff6fb9000 rw- 1 0 1 0 -- df
2213 0x7ffff719a000 0x7ffff71ba000 rw- 1 0 1 0 -- df
2213 0x7ffff739b000 0x7ffff73bb000 rw- 12 0 1 0 -- df
9.1
=97=97
% sudo procstat -v `pgrep mgwd`
PID START END PRT RES PRES REF SHD FL TP P=
ATH
2158 0x800a1c000 0x807c87000 r-x 23328 26760 2 1 CN-- vn=
/usr/lib/libmgwd.so.1
2158 0x807e87000 0x808bd4000 rw- 3283 0 1 0 C--- vn=
/usr/lib/libmgwd.so.1
2158 0x8336d7000 0x8336d8000 rw- 1 0 1 0 CN-- vn /=
usr/lib/libboost_atomic.so.1.56.0
2158 0x8336d8000 0x8342cf000 rw- 2105 0 1 0 C-S- df
2158 0x8342cf000 0x8342ea000 rw- 27 0 1 0 C--- df
2158 0x8342ea000 0x8342f3000 rw- 7 0 1 0 ---- df
2158 0x834400000 0x834600000 rw- 511 0 1 0 C--- df
2158 0x834600000 0x836400000 rw- 7375 0 1 0 C--- df
2158 0x836400000 0x836600000 rw- 228 0 1 0 ---- df
BSD 8.1
=3D=3D=3D=3D=3D=3D
last pid: 5116; load averages: 5.22, 4.29, 2.34 up 0+00:10:15 17:3=
4:00
352 processes: 1 running, 350 sleeping, 1 zombie
CPU: 0.2% user, 0.0% nice, 4.5% system, 1.7% interrupt, 93.5% idle
Mem: 297M Active, 648M Inact, 139M Wired, 6948K Cache, 7520K Buf, 1862M Fre=
e
Swap: 1536M Total, 1536M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMA=
ND
2219 root 68 96 0 859M 226M ucond 1 0:24 0.00% mgwd
BSD 9.1
=97=97=97
last pid: 5344; load averages: 5.17, 4.47, 2.79 up 0+00:26:12 17:2=
2:57
39 processes: 1 running, 37 sleeping, 1 zombie
CPU: 0.2% user, 0.0% nice, 2.2% system, 0.6% interrupt, 97.0% idle
Mem: 338M Active, 669M Inact, 147M Wired, 392K Cache, 7488K Buf, 1799M Free
Swap: 1536M Total, 1536M Fre
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMA=
ND
2158 root 68 40 0 874M 262M uwait 1 0:23 0.00% mgwd
=3D=3D=3D=3D=3D=3D=3D=3D
% ldd /usr/lib/libmgwd.so.1
/usr/lib/libmgwd.so.1:
% ldd /usr/lib/libboost_atomic.so.1.56.0
/usr/lib/libboost_atomic.so.1.56.0:
librt.so.1 =3D> /usr/lib/librt.so.1 (0x801002000)
libthr.so.3 =3D> /lib/libthr.so.3 (0x801207000)
;;image size comparison on different builds shows TEXT size of a libray wen=
t up by ~1.5M
text data bss dec hex filename
118484184 139568805724944 13816600883c3ef8 devN_150110_0500/mgmtgateway/bed=
rock/internal/x86_64/ulibso/libmgwd.so.1
119973051 139460085724944 139644003852cc63 devN_150110_1035/mgmtgateway/bed=
rock/internal/x86_64/ulibso/libmgwd.so.1
BSD 9.1
=97=97
% size /sbin/mgwd
text data bss dec hex filename
2106422 42388 371584 2520394 26754a /sbin/mgwd
% size /usr/lib/libboost_atomic.so.1.56.0
text data bss dec hex filename
1309 264 2624 4197 1065 /usr/lib/libboost_atomic.so.1.56.0
BSd 8.1
=97=97=97
% size /sbin/mgwd
text data bss dec hex filename
2091457 42364 371520 2505341 263a7d /sbin/mgwd
% size /usr/lib/libboost_atomic.so.1.56.0
text data bss dec hex filename
1309 264 2624 4197 1065 /usr/lib/libboost_atomic.so.1.56.0
Thanks
Suresh
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