All RAM is being used, swap not being used at all. Linux running slow.
Tolga Evren
tolgae at paro.com.tr
Thu Dec 22 11:39:06 UTC 2005
09:48:07 AM kbmemfree kbmemused %memused kbbuffers
kbcached kbswpfree kbswpused %swpused kbswpcad
09:48:08 AM 116336 3478712 96.76 16740
2017848 3148556 144 0.00 0
# free -m
total used free shared buffers
cached
Mem: 3510 3506 4 0 15
2511
-/+ buffers/cache: 979 2531
Swap: 3074 0 3074
based on the outputs of free and sar -r , your memory is used for page
cache in order to cache file data. This is normal , since operating
system uses all available memory for caching .(the free column is 2531
,so this means when a process needs memory , operating system will steal
this memory from the page cache. )
Again , your system seems idle, more info is needed.
Regards,
Tolga Evren
-----Original Message-----
From: redhat-list-bounces at redhat.com
[mailto:redhat-list-bounces at redhat.com] On Behalf Of unix syzadmin
Sent: Thursday, December 22, 2005 11:49 AM
To: General Red Hat Linux discussion list
Subject: Re: All RAM is being used,swap not being used at all. Linux
running slow.
Hi,
[root at bangpcplin3 network-scripts]# vmstat 1 10
procs -----------memory---------- ---swap-- -----io---- --system--
----cpu----
r b swpd free buff cache si so bi bo in cs us sy
id
wa
3 0 144 237088 16676 1997272 0 0 1 1 0 4 2
0
97 0
2 0 144 232928 16676 1997272 0 0 80 0 26 167 5
1
94 0
1 1 144 231776 16676 1997272 0 0 128 168 48 155 4
2
93 1
1 1 144 230544 16676 1997272 0 0 104 0 27 166 5
1
94 0
2 0 144 228512 16676 1997272 0 0 72 0 23 169 5
1
94 0
2 0 144 224976 16676 1997272 0 0 88 0 26 244 5
1
94 0
2 0 144 221584 16676 1997272 0 0 56 0 16 137 5
1
94 0
2 0 144 219536 16676 1997272 0 0 40 0 16 145 5
1
94 0
2 0 144 217040 16676 1997272 0 0 96 0 26 149 5
1
94 0
1 1 144 214544 16676 1997788 0 0 124 0 34 182 5
1
94 1
[root at bangpcplin3 network-scripts]#
[root at bangpcplin3 network-scripts]# sar -B 1 10
Linux 2.6.9-5.EL (bangpcplin3) 12/22/2005
09:45:53 AM pgpgin/s pgpgout/s fault/s majflt/s
09:45:54 AM 0.00 0.00 725.25 0.00
09:45:55 AM 0.00 0.00 208.91 0.00
09:45:55 AM pgpgin/s pgpgout/s fault/s majflt/s
09:45:56 AM 20.00 4.00 518.00 0.00
09:45:56 AM pgpgin/s pgpgout/s fault/s majflt/s
09:45:57 AM 16.00 0.00 178.00 0.00
09:45:57 AM pgpgin/s pgpgout/s fault/s majflt/s
09:45:58 AM 15.84 0.00 193.07 0.00
09:45:58 AM pgpgin/s pgpgout/s fault/s majflt/s
09:45:59 AM 0.00 0.00 228.71 0.00
09:45:59 AM pgpgin/s pgpgout/s fault/s majflt/s
09:46:00 AM 4.00 0.00 436.00 0.00
09:46:01 AM 8.00 0.00 523.00 0.00
09:46:01 AM pgpgin/s pgpgout/s fault/s majflt/s
09:46:02 AM 83.17 0.00 447.52 0.00
09:46:02 AM pgpgin/s pgpgout/s fault/s majflt/s
09:46:03 AM 11.88 0.00 433.66 0.00
Average: 15.94 0.40 388.45 0.00
[root at bangpcplin3 network-scripts]# sar -W 1 10
Linux 2.6.9-5.EL (bangpcplin3) 12/22/2005
09:46:26 AM pswpin/s pswpout/s
09:46:27 AM 0.00 0.00
09:46:28 AM 0.00 0.00
09:46:28 AM pswpin/s pswpout/s
09:46:29 AM 0.00 0.00
09:46:29 AM pswpin/s pswpout/s
09:46:30 AM 0.00 0.00
09:46:30 AM pswpin/s pswpout/s
09:46:31 AM 0.00 0.00
09:46:31 AM pswpin/s pswpout/s
09:46:32 AM 0.00 0.00
09:46:32 AM pswpin/s pswpout/s
09:46:33 AM 0.00 0.00
09:46:34 AM 0.00 0.00
09:46:34 AM pswpin/s pswpout/s
09:46:35 AM 0.00 0.00
09:46:35 AM pswpin/s pswpout/s
09:46:36 AM 0.00 0.00
Average: 0.00 0.00
[root at bangpcplin3 network-scripts]# iostat -x 1
Linux 2.6.9-5.EL (bangpcplin3) 12/22/2005
avg-cpu: %user %nice %sys %iowait %idle
2.46 0.00 0.36 0.02 97.15
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s
avgrq-sz avgqu-sz await svctm %util
sda 0.04 0.97 1.27 1.10 42.28 94.26 21.14 47.13
57.75 0.10 41.43 5.81 1.37
sdb 0.06 0.06 0.14 0.22 5.44 2.39 2.72 1.20
21.47 0.01 28.94 7.62 0.28
avg-cpu: %user %nice %sys %iowait %idle
5.51 0.00 0.52 0.23 93.74
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s
avgrq-sz avgqu-sz await svctm %util
sda 0.00 0.00 7.92 0.00 63.37 0.00 31.68 0.00
8.00 0.10 12.12 12.12 9.60
sdb 0.00 0.00 0.99 0.00 0.00 0.00 0.00 0.00
0.00 0.02 39.00 20.00 1.98
avg-cpu: %user %nice %sys %iowait %idle
5.59 0.00 0.44 0.21 93.76
Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s
avgrq-sz avgqu-sz await svctm %util
sda 0.00 0.00 5.00 10.00 40.00 112.00 20.00 56.00
10.13 0.31 20.93 6.87 10.30
sdb 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00 0.00
[root at bangpcplin3 network-scripts]# cat /proc/meminfo
MemTotal: 3595048 kB
MemFree: 128072 kB
Buffers: 16740 kB
Cached: 2017848 kB
SwapCached: 0 kB
Active: 1340824 kB
Inactive: 1906264 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 3595048 kB
LowFree: 128072 kB
SwapTotal: 3148700 kB
SwapFree: 3148556 kB
Dirty: 6504 kB
Writeback: 0 kB
Mapped: 1227656 kB
Slab: 198172 kB
Committed_AS: 5080108 kB
PageTables: 5248 kB
VmallocTotal: 2147483647 kB
VmallocUsed: 3308 kB
VmallocChunk: 2147479631 kB
HugePages_Total: 0
HugePages_Free: 0
Hugepagesize: 16384 kB
[root at bangpcplin3 network-scripts]# sar -r 1 10
Linux 2.6.9-5.EL (bangpcplin3) 12/22/2005
09:48:07 AM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree
kbswpused %swpused kbswpcad
09:48:08 AM 116336 3478712 96.76 16740 2017848
3148556 144 0.00 0
09:48:09 AM 114736 3480312 96.81 16740 2017848
3148556 144 0.00 0
09:48:09 AM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree
kbswpused %swpused kbswpcad
09:48:10 AM 113584 3481464 96.84 16740 2017848
3148556 144 0.00 0
09:48:10 AM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree
kbswpused %swpused kbswpcad
09:48:11 AM 113264 3481784 96.85 16740 2017848
3148556 144 0.00 0
09:48:11 AM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree
kbswpused %swpused kbswpcad
09:48:12 AM 113024 3482024 96.86 16740 2017848
3148556 144 0.00 0
09:48:12 AM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree
kbswpused %swpused kbswpcad
09:48:13 AM 111872 3483176 96.89 16740 2017848
3148556 144 0.00 0
09:48:13 AM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree
kbswpused %swpused kbswpcad
09:48:14 AM 111552 3483496 96.90 16740 2017848
3148556 144 0.00 0
09:48:15 AM 110176 3484872 96.94 16740 2018364
3148556 144 0.00 0
09:48:15 AM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree
kbswpused %swpused kbswpcad
09:48:16 AM 102176 3492872 97.16 16740 2018364
3148556 144 0.00 0
09:48:16 AM kbmemfree kbmemused %memused kbbuffers kbcached kbswpfree
kbswpused %swpused kbswpcad
09:48:17 AM 100832 3494216 97.20 16740 2018364
3148556 144 0.00 0
Average: 110755 3484293 96.92 16740 2018003
3148556 144 0.00 0
[root at bangpcplin3 network-scripts]# sar 1 10
Linux 2.6.9-5.EL (bangpcplin3) 12/22/2005
09:48:36 AM CPU %user %nice %system %iowait %idle
09:48:37 AM all 4.77 0.00 1.23 0.20 93.79
09:48:38 AM all 4.89 0.00 1.11 0.15 93.85
09:48:38 AM CPU %user %nice %system %iowait %idle
09:48:39 AM all 5.12 0.00 0.99 0.00 93.89
09:48:39 AM CPU %user %nice %system %iowait %idle
09:48:40 AM all 7.83 0.00 0.96 0.00 91.21
09:48:40 AM CPU %user %nice %system %iowait %idle
09:48:41 AM all 4.57 0.00 1.52 0.09 93.81
09:48:41 AM CPU %user %nice %system %iowait %idle
09:48:42 AM all 8.34 0.00 1.20 0.06 90.40
09:48:42 AM CPU %user %nice %system %iowait %idle
09:48:43 AM all 4.67 0.00 1.44 0.44 93.45
09:48:44 AM all 4.02 0.00 1.85 0.35 93.78
09:48:44 AM CPU %user %nice %system %iowait %idle
09:48:45 AM all 4.91 0.00 1.14 0.20 93.75
09:48:45 AM CPU %user %nice %system %iowait %idle
09:48:46 AM all 3.81 0.00 2.46 0.44 93.29
Average: all 5.29 0.00 1.39 0.19 93.12
Thanks & Regards,
-GnanaShekar-
On 12/22/05, Tolga Evren <tolgae at paro.com.tr> wrote:
>
> Can you send :
>
> Vmstat 1 10
>
> sar -B 1 10
>
> sar -W 1 10
>
> iostat -x 1
>
> cat /proc/meminfo
>
> sar -r 1 10
>
> sar 1 10
>
> ?
>
> Kind Regards,
> Tolga Evren
>
>
>
> -----Original Message-----
> From: redhat-list-bounces at redhat.com
> [mailto:redhat-list-bounces at redhat.com] On Behalf Of unix syzadmin
> Sent: Thursday, December 22, 2005 11:33 AM
> To: redhat-list at redhat.com
> Subject: All RAM is being used,swap not being used at all. Linux
running
> slow.
>
> Hi,
>
> All RAM is being used, swap not being used at all. Linux running
slow,
> Please suggest.
>
> # free -m
> total used free shared buffers
> cached
> Mem: 3510 3506 4 0 15
> 2511
> -/+ buffers/cache: 979 2531
> Swap: 3074 0 3074
>
> Thanks & Regards,
> -GnanaShekar-
> --
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