rsekkel
asked on
What is the filemon "swapper" process on AIX 7.1
Hi !
I'm trying to understand what's this "swapper" process shown on filemon results. I see a high access to "unix" and "utmp" files, and I suspect it's linked to this swap. Somehow we may be reaching a limit forcing a swap, although there's no disk swap as shown by lsps.
Filemon results (90 seconds):
Most Active Files
-------------------------- ---------- ---------- ---------- ---------- ------
#MBs #opns #rds #wrs file volume:inode
-------------------------- ---------- ---------- ---------- ---------- ------
21.5 71 5507 0 unix /dev/hd2:14297
15.6 4197 9288 0 UV.ACCOUNT /dev/lvmvb1:4417
13.4 101 3600 0 GVMTA01A /dev/lvmvdmn1:333975
12.2 75 8609 0 GVMTA315
10.6 13 938 0 INDEX.008 /dev/lvmvi3:8246
10.2 38 5483 0 GVMTA011 /dev/lvmvdrt1:88996
9.1 5 1360 400 INDEX.MAP /dev/lvmvima1:106962
8.9 13 965 185 INDEX.000 /dev/lvmvi2:73761
8.4 633 1715 0 CONTROLE /dev/lvmvdmn1:1619
8.1 56 13162 0 utmp /dev/hd4:17195
7.6 13 3906 0 INDEX.013 /dev/lvmvi3:20494
7.6 192 1959 0 CONTROLE
7.1 12 468 0 INDEX.009 /dev/lvmvi3:8247
6.0 120 1479 0 INDEX.000 /dev/lvmvi3:61445
5.9 9 388 0 INDEX.018 /dev/lvmvi3:8261
5.7 18 746 0 INDEX.005 /dev/lvmvi2:8205
5.4 35 1446 0 GVMTA01A
4.9 257 1929 0 INDEX.000 /dev/lvmvi2:36884
4.6 2965 6213 0 VOC /dev/lvmvdmn1:2141
4.6 32 608 0 INDEX.007 /dev/lvmvitm1:118793
......
Most Active Files Process-Wise
-------------------------- ---------- ---------- ---------- ---------- ------
#MBs #opns #rds #wrs file PID(Process:TID)
-------------------------- ---------- ---------- ---------- ---------- ------
0.6 2 868 0 VOC 0(swapper:113378053)
0.5 1 125 0 unix 0(swapper:38273875)
0.4 1 107 0 unix 0(swapper:84476297)
0.4 1 671 0 utmp 0(swapper:114820257)
0.4 1 663 0 utmp 0(swapper:24118315)
0.4 3 480 0 group 0(swapper:63833811)
0.4 1 95 0 unix 0(swapper:6161987)
0.4 1 95 0 unix 0(swapper:113378085)
0.4 1 94 0 unix 0(swapper:88999569)
0.4 1 94 0 unix 0(swapper:88999565)
0.4 1 94 0 unix 0(swapper:38340651)
0.4 1 94 0 unix 0(swapper:75694553)
0.4 1 94 0 unix 0(swapper:49808137)
0.4 1 94 0 unix 0(swapper:8782793)
0.4 1 94 0 unix 0(swapper:329169)
0.4 1 94 0 unix 0(swapper:8782763)
0.4 1 94 0 unix 0(swapper:35127801)
0.4 1 94 0 unix 0(swapper:41813585)
0.4 1 94 0 unix 0(swapper:113509137)
0.4 1 94 0 unix 0(swapper:116131205)
0.4 1 94 0 unix 0(swapper:6161995)
0.4 1 94 0 unix 0(swapper:8586103)
0.4 1 94 0 unix 0(swapper:26805461)
0.4 1 94 0 unix 0(swapper:105711125)
0.4 1 94 0 unix 0(swapper:116785483)
0.4 1 94 0 unix 0(swapper:26936327)
0.4 1 94 0 unix 0(swapper:48236639)
0.4 1 94 0 unix 0(swapper:29427077)
0.4 1 94 0 unix 0(swapper:108659519)
0.4 1 94 0 unix 0(swapper:108659511)
0.4 1 94 0 unix 0(swapper:18875507)
0.4 1 94 0 unix 0(swapper:113378105)
0.4 1 94 0 unix 0(swapper:87426203)
0.4 1 94 0 unix 0(swapper:39912431)
0.4 1 94 0 unix 0(swapper:94242335)
0.4 1 94 0 unix 0(swapper:117048265)
0.4 1 94 0 unix 0(swapper:63112021)
0.4 1 94 0 unix 0(swapper:128451783)
0.4 1 94 0 unix 0(swapper:6164073)
0.4 1 94 0 unix 0(swapper:33293495)
0.4 1 594 0 utmp 0(swapper:103219639)
0.4 1 587 0 0(swapper:1967415)
0.4 1 565 0 telnetd.cat 0(swapper:86704501)
[root@p750 integral]# lsps -a
Page Space Physical Volume Volume Group Size %Used Active Auto Type Chksum
hd6 hdisk0 rootvg 33280MB 1 yes yes lv 0
[root@p750 integral]# uptime
06:25PM up 18 days, 12:13, 1618 users, load average: 17.44, 20.59, 20.12
This is a p750, 96GB RAM, 16 Quad core CPUs.
Thanks in advance,
Ronald
I'm trying to understand what's this "swapper" process shown on filemon results. I see a high access to "unix" and "utmp" files, and I suspect it's linked to this swap. Somehow we may be reaching a limit forcing a swap, although there's no disk swap as shown by lsps.
Filemon results (90 seconds):
Most Active Files
--------------------------
#MBs #opns #rds #wrs file volume:inode
--------------------------
21.5 71 5507 0 unix /dev/hd2:14297
15.6 4197 9288 0 UV.ACCOUNT /dev/lvmvb1:4417
13.4 101 3600 0 GVMTA01A /dev/lvmvdmn1:333975
12.2 75 8609 0 GVMTA315
10.6 13 938 0 INDEX.008 /dev/lvmvi3:8246
10.2 38 5483 0 GVMTA011 /dev/lvmvdrt1:88996
9.1 5 1360 400 INDEX.MAP /dev/lvmvima1:106962
8.9 13 965 185 INDEX.000 /dev/lvmvi2:73761
8.4 633 1715 0 CONTROLE /dev/lvmvdmn1:1619
8.1 56 13162 0 utmp /dev/hd4:17195
7.6 13 3906 0 INDEX.013 /dev/lvmvi3:20494
7.6 192 1959 0 CONTROLE
7.1 12 468 0 INDEX.009 /dev/lvmvi3:8247
6.0 120 1479 0 INDEX.000 /dev/lvmvi3:61445
5.9 9 388 0 INDEX.018 /dev/lvmvi3:8261
5.7 18 746 0 INDEX.005 /dev/lvmvi2:8205
5.4 35 1446 0 GVMTA01A
4.9 257 1929 0 INDEX.000 /dev/lvmvi2:36884
4.6 2965 6213 0 VOC /dev/lvmvdmn1:2141
4.6 32 608 0 INDEX.007 /dev/lvmvitm1:118793
......
Most Active Files Process-Wise
--------------------------
#MBs #opns #rds #wrs file PID(Process:TID)
--------------------------
0.6 2 868 0 VOC 0(swapper:113378053)
0.5 1 125 0 unix 0(swapper:38273875)
0.4 1 107 0 unix 0(swapper:84476297)
0.4 1 671 0 utmp 0(swapper:114820257)
0.4 1 663 0 utmp 0(swapper:24118315)
0.4 3 480 0 group 0(swapper:63833811)
0.4 1 95 0 unix 0(swapper:6161987)
0.4 1 95 0 unix 0(swapper:113378085)
0.4 1 94 0 unix 0(swapper:88999569)
0.4 1 94 0 unix 0(swapper:88999565)
0.4 1 94 0 unix 0(swapper:38340651)
0.4 1 94 0 unix 0(swapper:75694553)
0.4 1 94 0 unix 0(swapper:49808137)
0.4 1 94 0 unix 0(swapper:8782793)
0.4 1 94 0 unix 0(swapper:329169)
0.4 1 94 0 unix 0(swapper:8782763)
0.4 1 94 0 unix 0(swapper:35127801)
0.4 1 94 0 unix 0(swapper:41813585)
0.4 1 94 0 unix 0(swapper:113509137)
0.4 1 94 0 unix 0(swapper:116131205)
0.4 1 94 0 unix 0(swapper:6161995)
0.4 1 94 0 unix 0(swapper:8586103)
0.4 1 94 0 unix 0(swapper:26805461)
0.4 1 94 0 unix 0(swapper:105711125)
0.4 1 94 0 unix 0(swapper:116785483)
0.4 1 94 0 unix 0(swapper:26936327)
0.4 1 94 0 unix 0(swapper:48236639)
0.4 1 94 0 unix 0(swapper:29427077)
0.4 1 94 0 unix 0(swapper:108659519)
0.4 1 94 0 unix 0(swapper:108659511)
0.4 1 94 0 unix 0(swapper:18875507)
0.4 1 94 0 unix 0(swapper:113378105)
0.4 1 94 0 unix 0(swapper:87426203)
0.4 1 94 0 unix 0(swapper:39912431)
0.4 1 94 0 unix 0(swapper:94242335)
0.4 1 94 0 unix 0(swapper:117048265)
0.4 1 94 0 unix 0(swapper:63112021)
0.4 1 94 0 unix 0(swapper:128451783)
0.4 1 94 0 unix 0(swapper:6164073)
0.4 1 94 0 unix 0(swapper:33293495)
0.4 1 594 0 utmp 0(swapper:103219639)
0.4 1 587 0 0(swapper:1967415)
0.4 1 565 0 telnetd.cat 0(swapper:86704501)
[root@p750 integral]# lsps -a
Page Space Physical Volume Volume Group Size %Used Active Auto Type Chksum
hd6 hdisk0 rootvg 33280MB 1 yes yes lv 0
[root@p750 integral]# uptime
06:25PM up 18 days, 12:13, 1618 users, load average: 17.44, 20.59, 20.12
This is a p750, 96GB RAM, 16 Quad core CPUs.
Thanks in advance,
Ronald
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ASKER
Thanks for your quick response.
I could not find anything about this new "swapper".
Thanks a lot.
Ron