Machine uptimes
The data below is based on the currently available data from the
machine-update scripts that are run by a lot of
machines.
Only data from machines that have updated within the last
60 days is included.
Information from 4074 machines.
Average uptime: 69.8 days
Max uptime currently running: 1800.4 days
Max uptime ever observed: 15039.3 days
| Count |
Uptime |
| 628 |
0-1 days |
| 978 |
1-10 days |
| 1712 |
10-100 days |
| 732 |
More than 100 days |
Top ten long-running machines
| Uptime |
Kernel |
CPU |
| 1800.4 |
2.6.7 |
Intel Pentium III |
| 1528.1 |
2.6.9-22.ELsmp |
Intel Pentium 4 |
| 1499.1 |
2.4.18-14 |
Intel PentiumIII |
| 1423.6 |
2.6.11.4-21.11-smp |
Intel Celeron |
| 1420.8 |
2.6.8-2-686-smp |
Intel Xeon |
| 1355.7 |
2.6.9-34.EL |
Intel Pentium III |
| 1348.7 |
2.6.9-34.EL |
Intel Pentium III |
| 1322.4 |
2.6.16.18 |
Intel Xeon |
| 1268.3 |
2.6.5-7.267-bigsmp |
Intel Unknown |
| 1265.8 |
2.6.5-7.267-bigsmp |
Intel Unknown |
|
Average uptime, by kernel
| Count |
Kernel |
Uptime |
| Typical |
Longest |
| 9 |
2.0.38 |
35.4 |
63.4 |
0.2% |
| 4 |
2.2.14 |
248.5 |
477.2 |
0.1% |
| 4 |
2.2.16 |
236.3 |
447.8 |
0.1% |
| 3 |
2.2.16C37_III |
237.4 |
500.6 |
0.1% |
| 3 |
2.2.17 |
36.0 |
65.9 |
0.1% |
| 10 |
2.2.19 |
65.8 |
222.2 |
0.2% |
| 3 |
2.2.20 |
50.3 |
113.8 |
0.1% |
| 36 |
2.4.18 |
227.1 |
1499.1 |
0.9% |
| 6 |
2.4.19 |
21.4 |
74.9 |
0.1% |
| 53 |
2.4.20 |
99.8 |
942.5 |
1.3% |
| 39 |
2.4.21 |
131.5 |
704.9 |
1.0% |
| 15 |
2.4.22 |
161.2 |
816.2 |
0.4% |
| 5 |
2.4.25 |
170.2 |
545.5 |
0.1% |
| 16 |
2.4.26 |
191.8 |
1054.2 |
0.4% |
| 23 |
2.4.27 |
221.7 |
1105.6 |
0.6% |
| 3 |
2.4.28 |
35.0 |
86.5 |
0.1% |
| 11 |
2.4.29 |
28.6 |
136.4 |
0.3% |
| 9 |
2.4.31 |
88.6 |
433.9 |
0.2% |
| 9 |
2.4.32 |
193.3 |
485.9 |
0.2% |
| 8 |
2.4.33.3 |
147.4 |
480.2 |
0.2% |
| 3 |
2.4.35.3 |
57.5 |
117.9 |
0.1% |
| 3 |
2.4.4 |
90.1 |
237.0 |
0.1% |
| 3 |
2.4.9 |
466.3 |
971.0 |
0.1% |
| 9 |
2.6.10 |
132.3 |
373.5 |
0.2% |
| 5 |
2.6.11 |
359.0 |
848.8 |
0.1% |
| 17 |
2.6.11.4 |
171.0 |
1423.6 |
0.4% |
| 26 |
2.6.12 |
150.6 |
1137.8 |
0.6% |
| 15 |
2.6.13 |
83.5 |
312.0 |
0.4% |
| 8 |
2.6.14 |
130.3 |
233.4 |
0.2% |
| 24 |
2.6.15 |
197.2 |
1002.5 |
0.6% |
| 7 |
2.6.16 |
256.6 |
912.4 |
0.2% |
| 4 |
2.6.16.13 |
99.8 |
306.4 |
0.1% |
| 3 |
2.6.16.21 |
123.2 |
295.8 |
0.1% |
| 5 |
2.6.16.27 |
136.6 |
419.7 |
0.1% |
| 9 |
2.6.16.29 |
206.7 |
796.2 |
0.2% |
| 3 |
2.6.16.38 |
133.1 |
222.0 |
0.1% |
| 3 |
2.6.16.60 |
13.0 |
22.4 |
0.1% |
| 5 |
2.6.16.62 |
47.6 |
93.9 |
0.1% |
| 38 |
2.6.17 |
155.6 |
1221.4 |
0.9% |
| 7 |
2.6.17.13 |
208.6 |
978.6 |
0.2% |
| 540 |
2.6.18 |
68.0 |
1025.1 |
13.3% |
| 9 |
2.6.18.2 |
135.3 |
370.6 |
0.2% |
| 40 |
2.6.18.8 |
87.9 |
555.8 |
1.0% |
| 9 |
2.6.19 |
76.5 |
143.0 |
0.2% |
| 10 |
2.6.19.2 |
94.4 |
521.3 |
0.2% |
| 39 |
2.6.20 |
122.7 |
1033.8 |
1.0% |
| 6 |
2.6.21 |
83.9 |
339.0 |
0.1% |
| 3 |
2.6.21.1 |
402.6 |
615.8 |
0.1% |
| 16 |
2.6.21.5 |
47.3 |
351.6 |
0.4% |
| 24 |
2.6.22 |
116.0 |
834.1 |
0.6% |
| 20 |
2.6.22.14 |
77.2 |
516.3 |
0.5% |
| 26 |
2.6.22.19 |
40.0 |
256.9 |
0.6% |
| 4 |
2.6.22.5 |
96.1 |
288.0 |
0.1% |
| 7 |
2.6.22.9 |
135.2 |
745.6 |
0.2% |
| 14 |
2.6.23 |
190.9 |
710.6 |
0.3% |
| 3 |
2.6.23.12 |
77.4 |
162.5 |
0.1% |
| 3 |
2.6.23.14 |
77.1 |
216.6 |
0.1% |
| 17 |
2.6.23.17 |
159.6 |
537.9 |
0.4% |
| 222 |
2.6.24 |
63.5 |
675.1 |
5.4% |
| 4 |
2.6.24.2 |
306.3 |
659.1 |
0.1% |
| 5 |
2.6.24.3 |
86.2 |
147.0 |
0.1% |
| 16 |
2.6.24.5 |
49.3 |
284.9 |
0.4% |
| 30 |
2.6.25 |
131.0 |
657.6 |
0.7% |
| 3 |
2.6.25.10 |
226.2 |
447.6 |
0.1% |
| 3 |
2.6.25.17 |
42.1 |
65.8 |
0.1% |
| 37 |
2.6.25.20 |
27.0 |
378.9 |
0.9% |
| 3 |
2.6.25.6 |
105.3 |
135.2 |
0.1% |
| 435 |
2.6.26 |
49.7 |
458.9 |
10.7% |
| 4 |
2.6.26.2 |
164.6 |
343.3 |
0.1% |
| 3 |
2.6.26.3 |
65.8 |
195.4 |
0.1% |
| 6 |
2.6.26.5 |
45.2 |
134.7 |
0.1% |
| 5 |
2.6.26.6 |
103.0 |
245.5 |
0.1% |
| 17 |
2.6.26.8 |
47.3 |
230.0 |
0.4% |
| 3 |
2.6.26.8.tex3 |
93.8 |
104.7 |
0.1% |
| 62 |
2.6.27 |
58.9 |
451.1 |
1.5% |
| 7 |
2.6.27.10 |
97.2 |
193.3 |
0.2% |
| 3 |
2.6.27.19 |
138.5 |
320.3 |
0.1% |
| 10 |
2.6.27.21 |
131.9 |
309.1 |
0.2% |
| 11 |
2.6.27.24 |
68.1 |
225.4 |
0.3% |
| 23 |
2.6.27.25 |
60.7 |
220.8 |
0.6% |
| 5 |
2.6.27.29 |
71.6 |
165.6 |
0.1% |
| 4 |
2.6.27.30 |
46.0 |
127.1 |
0.1% |
| 17 |
2.6.27.31 |
16.8 |
103.0 |
0.4% |
| 15 |
2.6.27.37 |
40.2 |
95.2 |
0.4% |
| 7 |
2.6.27.38 |
34.2 |
75.0 |
0.2% |
| 18 |
2.6.27.39 |
12.9 |
52.0 |
0.4% |
| 32 |
2.6.27.41 |
24.1 |
53.6 |
0.8% |
| 21 |
2.6.27.42 |
7.6 |
23.1 |
0.5% |
| 6 |
2.6.27.5 |
209.9 |
408.0 |
0.1% |
| 15 |
2.6.27.7 |
103.8 |
444.2 |
0.4% |
| 119 |
2.6.28 |
35.8 |
443.2 |
2.9% |
| 4 |
2.6.28.10 |
10.2 |
25.1 |
0.1% |
| 3 |
2.6.28.7 |
53.1 |
77.0 |
0.1% |
| 3 |
2.6.28.8 |
100.9 |
102.0 |
0.1% |
| 35 |
2.6.29 |
90.7 |
272.3 |
0.9% |
| 5 |
2.6.29.1 |
54.5 |
193.8 |
0.1% |
| 3 |
2.6.29.2 |
18.3 |
28.3 |
0.1% |
| 3 |
2.6.29.3 |
132.9 |
264.5 |
0.1% |
| 3 |
2.6.29.4 |
85.7 |
228.0 |
0.1% |
| 46 |
2.6.29.6 |
39.4 |
172.3 |
1.1% |
| 146 |
2.6.30 |
38.2 |
187.5 |
3.6% |
| 34 |
2.6.30.10 |
4.8 |
21.5 |
0.8% |
| 4 |
2.6.30.3 |
16.0 |
34.3 |
0.1% |
| 14 |
2.6.30.4 |
98.5 |
187.6 |
0.3% |
| 17 |
2.6.30.5 |
73.1 |
168.9 |
0.4% |
| 3 |
2.6.30.8 |
91.8 |
130.3 |
0.1% |
| 30 |
2.6.30.9 |
35.1 |
80.5 |
0.7% |
| 413 |
2.6.31 |
9.5 |
123.8 |
10.1% |
| 4 |
2.6.31.1 |
30.1 |
71.8 |
0.1% |
| 73 |
2.6.31.12 |
5.5 |
19.3 |
1.8% |
| 17 |
2.6.31.5 |
12.0 |
98.7 |
0.4% |
| 43 |
2.6.31.6 |
10.0 |
63.5 |
1.1% |
| 39 |
2.6.31.8 |
4.8 |
34.0 |
1.0% |
| 37 |
2.6.31.9 |
12.4 |
36.2 |
0.9% |
| 181 |
2.6.32 |
9.1 |
59.8 |
4.4% |
| 4 |
2.6.32.1 |
15.1 |
52.4 |
0.1% |
| 11 |
2.6.32.2 |
10.8 |
43.2 |
0.3% |
| 16 |
2.6.32.3 |
9.3 |
28.8 |
0.4% |
| 10 |
2.6.32.4 |
10.6 |
18.9 |
0.2% |
| 5 |
2.6.32.5 |
8.3 |
11.3 |
0.1% |
| 13 |
2.6.32.6 |
6.1 |
10.5 |
0.3% |
| 19 |
2.6.32.7 |
3.8 |
11.4 |
0.5% |
| 11 |
2.6.33 |
3.0 |
10.3 |
0.3% |
| 4 |
2.6.4 |
30.1 |
59.2 |
0.1% |
| 17 |
2.6.5 |
539.1 |
1268.3 |
0.4% |
| 5 |
2.6.7 |
371.5 |
1800.4 |
0.1% |
| 42 |
2.6.8 |
191.9 |
1420.8 |
1.0% |
| 3 |
2.6.8.1 |
311.5 |
642.9 |
0.1% |
| 146 |
2.6.9 |
132.5 |
1528.1 |
3.6% |
| 3 |
8.0 |
15.3 |
23.9 |
0.1% |
| Others |
290 |
7.1% |
|
NOTE:
The Linux kernel (at least up to 2.4.2) has a flaw: It computes the result
of the "uptime" based on the internal "jiffies" counter, which counts the
time since boot, in units of 10 milliseconds.
This is typecast as an "unsigned long" - on the Intel boxes, that's an unsigned
32-bit number.
Well, it turns out that in a 32-bit number, you can store 497.1 days before the
number wraps. So all the numbers higher than this on this list are because:
- They are not Intel architectures
- They have sent in updates on both sides of the wrap, and my scripts
have successfully correlated them and concluded that it was a wrap, not
a reboot.
Thanks to Brian "Z" Frappier for alerting me to the problem!