I performed the following tests
Built the latest tip 1.0 on OS X 10.11.4, 2.3 GHz Intel Core i7 with
16GB and load average of 1+ I ran the test program, SleepLatency.java with
Java 1.8 and 1.7 and I am getting very poor results. I am unable to reproduce
the results reported by haosdent . I have also increased the priority of the
mesos agent and mesos master. Is there something I am missing here in the
config.
I have the master and the agent running on the same machine.
Not using zookeeper
Using localhost
No special options for the master and the agent
0 894 1 0 2:15PM ?? 0:29.22 /usr/local/sbin/mesos-master
--work_dir=/scratch/mesos/master --ip=127.0.0.1
0 896 1 0 2:15PM ?? 1:15.55 /usr/local/sbin/mesos-slave
--master=127.0.0.1:5050 --work_dir=/scratch/mesos/slave
Turned off power nap
Rinaldo
This is the application
public class SleepLatency {
static final int COUNT = 100;
static final long DELAY = 10L;
public static void main(String[] args) throws Exception {
long tstart = System.currentTimeMillis();
for (int i = 0; i < COUNT; i++) {
long t0 = System.currentTimeMillis();
Thread.sleep(DELAY);
long t1 = System.currentTimeMillis();
System.out.printf("loop %3d delay %4d ms%n", i, t1 - t0);
}
long tfinish = System.currentTimeMillis();
System.out.printf("total time = %5d ms%n", tfinish - tstart);
}
}
and how it was launched
mesos-execute --master="127.0.0.1:5050" --name="SleepLatency" --command="cd
/tmp && java SleepLatency”
Rinaldo
> On Jun 6, 2016, at 11:28 AM, haosdent <[email protected]> wrote:
>
> yes, mine is a laptop.
>
> On Mon, Jun 6, 2016 at 11:23 PM, DiGiorgio, Mr. Rinaldo S.
> <[email protected]> wrote:
>
>> On Jun 6, 2016, at 11:08, haosdent <[email protected]> wrote:
>>
>> I use OS X 10.11.4 but I think it should not related to this minor different
>> on OS X version.
>> For settings, I disable `Enable Power Nap while plugged into a power
>> adapter` in `Energy Saver`.
>
> I assume you have a laptop, I have retested with power nap being set to off
> on an iMac and it did not make a difference. I will try it on a laptop. The
> other 15 Macs are all towers. Maybe it is a clue, works on laptops but not on
> desktops.
>> On Mon, Jun 6, 2016 at 10:57 PM, DiGiorgio, Mr. Rinaldo S.
>> <[email protected]> wrote:
>
>
>> Thanks James and Haosdent,
>>
>> I built my own version of mesos 1.0 and installed it on 10.11.5 and I am
>> getting the same results as 10.10.5 with 0.28.1
>>
>> Do either of you remember what you may have set on your OSX machines to
>> default some of the desktop settings that may be causing this issue?
>>
>>
>> We are already turning off many desktop features since they are not relevant
>> for our use case.
>>
>>
>>
>> Received SUBSCRIBED event
>> Subscribed executor on dhcp-adc-twvpn-3-vpnpool-10-154-101-79.vpn.oracle.com
>> Received LAUNCH event
>> Starting task test-sleep
>> sh -c 'cd /tmp && java SleepLatency'
>> Forked command at 2907
>> loop 0 delay 35 ms
>> loop 1 delay 108 ms
>> loop 2 delay 104 ms
>> loop 3 delay 57 ms
>> loop 4 delay 104 ms
>> loop 5 delay 93 ms
>> loop 6 delay 12 ms
>> loop 7 delay 17 ms
>> loop 8 delay 105 ms
>> loop 9 delay 109 ms
>>
>>
>> > On Jun 4, 2016, at 05:07, haosdent <[email protected]> wrote:
>> >
>> > Hi, Rinaldo. I test your problem in my local Mesos (run in my mac). It
>> > looks normal in my side. I started it by
>> >
>> > ```
>> > mesos-execute --master="localhost:5050" --name="test-sleep" --command="cd
>> > /tmp && java SleepLatency"
>> > ```
>> >
>> > ```
>> > Registered executor on localhost
>> > Starting task test-sleep
>> > sh -c 'cd /tmp && java SleepLatency'
>> > Forked command at 42480
>> > loop 0 delay 11 ms
>> > loop 1 delay 12 ms
>> > loop 2 delay 11 ms
>> > loop 3 delay 13 ms
>> > loop 4 delay 12 ms
>> > loop 5 delay 12 ms
>> > loop 6 delay 12 ms
>> > loop 7 delay 12 ms
>> > loop 8 delay 12 ms
>> > loop 9 delay 11 ms
>> > loop 10 delay 12 ms
>> > loop 11 delay 13 ms
>> > loop 12 delay 11 ms
>> > loop 13 delay 11 ms
>> > loop 14 delay 12 ms
>> > loop 15 delay 12 ms
>> > loop 16 delay 13 ms
>> > loop 17 delay 12 ms
>> > loop 18 delay 11 ms
>> > loop 19 delay 12 ms
>> > loop 20 delay 12 ms
>> > loop 21 delay 11 ms
>> > loop 22 delay 12 ms
>> > loop 23 delay 11 ms
>> > loop 24 delay 12 ms
>> > loop 25 delay 12 ms
>> > loop 26 delay 12 ms
>> > loop 27 delay 12 ms
>> > loop 28 delay 13 ms
>> > loop 29 delay 12 ms
>> > loop 30 delay 12 ms
>> > loop 31 delay 11 ms
>> > loop 32 delay 11 ms
>> > loop 33 delay 11 ms
>> > loop 34 delay 13 ms
>> > loop 35 delay 10 ms
>> > loop 36 delay 12 ms
>> > loop 37 delay 11 ms
>> > loop 38 delay 12 ms
>> > loop 39 delay 12 ms
>> > loop 40 delay 12 ms
>> > loop 41 delay 12 ms
>> > loop 42 delay 12 ms
>> > loop 43 delay 11 ms
>> > loop 44 delay 12 ms
>> > loop 45 delay 12 ms
>> > loop 46 delay 12 ms
>> > loop 47 delay 12 ms
>> > loop 48 delay 12 ms
>> > loop 49 delay 12 ms
>> > loop 50 delay 12 ms
>> > loop 51 delay 12 ms
>> > loop 52 delay 12 ms
>> > loop 53 delay 13 ms
>> > loop 54 delay 11 ms
>> > loop 55 delay 12 ms
>> > loop 56 delay 12 ms
>> > loop 57 delay 12 ms
>> > loop 58 delay 12 ms
>> > loop 59 delay 11 ms
>> > loop 60 delay 11 ms
>> > loop 61 delay 11 ms
>> > loop 62 delay 11 ms
>> > loop 63 delay 12 ms
>> > loop 64 delay 12 ms
>> > loop 65 delay 12 ms
>> > loop 66 delay 12 ms
>> > loop 67 delay 12 ms
>> > loop 68 delay 11 ms
>> > loop 69 delay 13 ms
>> > loop 70 delay 12 ms
>> > loop 71 delay 10 ms
>> > loop 72 delay 12 ms
>> > loop 73 delay 10 ms
>> > loop 74 delay 11 ms
>> > loop 75 delay 12 ms
>> > loop 76 delay 10 ms
>> > loop 77 delay 11 ms
>> > loop 78 delay 12 ms
>> > loop 79 delay 10 ms
>> > loop 80 delay 12 ms
>> > loop 81 delay 12 ms
>> > loop 82 delay 11 ms
>> > loop 83 delay 11 ms
>> > loop 84 delay 12 ms
>> > loop 85 delay 11 ms
>> > loop 86 delay 12 ms
>> > loop 87 delay 12 ms
>> > loop 88 delay 12 ms
>> > loop 89 delay 11 ms
>> > loop 90 delay 12 ms
>> > loop 91 delay 12 ms
>> > loop 92 delay 13 ms
>> > loop 93 delay 12 ms
>> > loop 94 delay 11 ms
>> > loop 95 delay 10 ms
>> > loop 96 delay 12 ms
>> > loop 97 delay 11 ms
>> > loop 98 delay 12 ms
>> > loop 99 delay 12 ms
>> > total time = 1215 ms
>> > Command exited with status 0 (pid: 42480)
>> > ```
>> >
>> > On Sat, Jun 4, 2016 at 4:11 AM, DiGiorgio, Mr. Rinaldo S.
>> > <[email protected]> wrote:
>> > Hi,
>> >
>> > We are running the following Java application and we are getting
>> > unreasonable deltas in the actual amount time slept. On linux the results
>> > are as expected 10, 11, 12 but mostly 10ms. Can you suggest any changes
>> > we can make or is this a known issue or a new issue to be investigated?
>> > When we run the same code on the same instance of OSX 10.10.5 without
>> > mesos -- we get the expected results.
>> >
>> >
>> > public class SleepLatency {
>> > static final int COUNT = 100;
>> > static final long DELAY = 10L;
>> >
>> > public static void main(String[] args) throws Exception {
>> > long tstart = System.currentTimeMillis();
>> > for (int i = 0; i < COUNT; i++) {
>> > long t0 = System.currentTimeMillis();
>> > Thread.sleep(DELAY);
>> > long t1 = System.currentTimeMillis();
>> > System.out.printf("loop %3d delay %4d ms%n", i, t1 - t0);
>> > }
>> > long tfinish = System.currentTimeMillis();
>> > System.out.printf("total time = %5d ms%n", tfinish - tstart);
>> > }
>> > }
>> >
>> > ====== OSX RESULTS are 10 to 20 times larger than LINUX Results below
>> > =====
>> >
>> > sh -c '/opt/jdk/bin/java -cp ./mach5-mesos-support-1.0-SNAPSHOT.jar
>> > SleepLatency'
>> > loop 0 delay 141 ms
>> > loop 1 delay 201 ms
>> > loop 2 delay 81 ms
>> > loop 3 delay 14 ms
>> > loop 4 delay 194 ms
>> > loop 5 delay 149 ms
>> > loop 6 delay 172 ms
>> > loop 7 delay 203 ms
>> > loop 8 delay 203 ms
>> > loop 9 delay 204 ms
>> > loop 10 delay 204 ms
>> > loop 11 delay 204 ms
>> > loop 12 delay 203 ms
>> > loop 13 delay 203 ms
>> > loop 14 delay 40 ms
>> > loop 15 delay 206 ms
>> > loop 16 delay 171 ms
>> > loop 17 delay 107 ms
>> > loop 18 delay 85 ms
>> > loop 19 delay 204 ms
>> > loop 20 delay 204 ms
>> > loop 21 delay 203 ms
>> > loop 22 delay 208 ms
>> > loop 23 delay 200 ms
>> > loop 24 delay 203 ms
>> > loop 25 delay 203 ms
>> > loop 26 delay 204 ms
>> > loop 27 delay 204 ms
>> > loop 28 delay 120 ms
>> > loop 29 delay 83 ms
>> > loop 30 delay 204 ms
>> > loop 31 delay 203 ms
>> > loop 32 delay 204 ms
>> > loop 33 delay 208 ms
>> > loop 34 delay 199 ms
>> > loop 35 delay 204 ms
>> > loop 36 delay 175 ms
>> > loop 37 delay 11 ms
>> > loop 38 delay 115 ms
>> > loop 39 delay 205 ms
>> > loop 40 delay 204 ms
>> > loop 41 delay 11 ms
>> > loop 42 delay 91 ms
>> > loop 43 delay 202 ms
>> > loop 44 delay 203 ms
>> > loop 45 delay 204 ms
>> > loop 46 delay 209 ms
>> > loop 47 delay 112 ms
>> > loop 48 delay 16 ms
>> > loop 49 delay 69 ms
>> > loop 50 delay 204 ms
>> > loop 51 delay 18 ms
>> > loop 52 delay 14 ms
>> > loop 53 delay 70 ms
>> > loop 54 delay 33 ms
>> > loop 55 delay 184 ms
>> > loop 56 delay 199 ms
>> > loop 57 delay 194 ms
>> > loop 58 delay 102 ms
>> > loop 59 delay 102 ms
>> > loop 60 delay 12 ms
>> > loop 61 delay 197 ms
>> > loop 62 delay 204 ms
>> > loop 63 delay 204 ms
>> > loop 64 delay 206 ms
>> > loop 65 delay 11 ms
>> > loop 66 delay 180 ms
>> > loop 67 delay 202 ms
>> > loop 68 delay 10 ms
>> > loop 69 delay 20 ms
>> > loop 70 delay 199 ms
>> > loop 71 delay 179 ms
>> > loop 72 delay 202 ms
>> > loop 73 delay 33 ms
>> > loop 74 delay 69 ms
>> > loop 75 delay 14 ms
>> > loop 76 delay 88 ms
>> > loop 77 delay 204 ms
>> > loop 78 delay 209 ms
>> > loop 79 delay 198 ms
>> > loop 80 delay 204 ms
>> > loop 81 delay 25 ms
>> > loop 82 delay 76 ms
>> > loop 83 delay 102 ms
>> > loop 84 delay 173 ms
>> > loop 85 delay 13 ms
>> > loop 86 delay 17 ms
>> > loop 87 delay 14 ms
>> > loop 88 delay 191 ms
>> > loop 89 delay 204 ms
>> > loop 90 delay 204 ms
>> > loop 91 delay 102 ms
>> > loop 92 delay 47 ms
>> > loop 93 delay 37 ms
>> > loop 94 delay 142 ms
>> > loop 95 delay 202 ms
>> > loop 96 delay 204 ms
>> > loop 97 delay 202 ms
>> > loop 98 delay 104 ms
>> > loop 99 delay 80 ms
>> > total time = 14193 ms
>> >
>> >
>> > ====== LINUX RESULTS are as expected ======
>> >
>> > sh -c '/opt/jdk/bin/java -cp ./mach5-mesos-support-1.0-SNAPSHOT.jar
>> > SleepLatency'
>> > Forked command at 6125
>> > loop 0 delay 10 ms
>> > loop 1 delay 11 ms
>> > loop 2 delay 10 ms
>> > loop 3 delay 10 ms
>> > loop 4 delay 10 ms
>> > loop 5 delay 10 ms
>> > loop 6 delay 10 ms
>> > loop 7 delay 10 ms
>> > loop 8 delay 10 ms
>> > loop 9 delay 10 ms
>> > loop 10 delay 10 ms
>> > loop 11 delay 10 ms
>> > loop 12 delay 10 ms
>> > loop 13 delay 10 ms
>> > loop 14 delay 10 ms
>> > loop 15 delay 10 ms
>> > loop 16 delay 10 ms
>> > loop 17 delay 10 ms
>> > loop 18 delay 10 ms
>> > loop 19 delay 11 ms
>> > loop 20 delay 10 ms
>> > loop 21 delay 10 ms
>> > loop 22 delay 10 ms
>> > loop 23 delay 10 ms
>> > loop 24 delay 10 ms
>> > loop 25 delay 11 ms
>> > loop 26 delay 10 ms
>> > loop 27 delay 10 ms
>> > loop 28 delay 10 ms
>> > loop 29 delay 10 ms
>> > loop 30 delay 10 ms
>> > loop 31 delay 10 ms
>> > loop 32 delay 10 ms
>> > loop 33 delay 10 ms
>> > loop 34 delay 11 ms
>> > loop 35 delay 10 ms
>> > loop 36 delay 10 ms
>> > loop 37 delay 11 ms
>> > loop 38 delay 10 ms
>> > loop 39 delay 10 ms
>> > loop 40 delay 11 ms
>> > loop 41 delay 10 ms
>> > loop 42 delay 10 ms
>> > loop 43 delay 11 ms
>> > loop 44 delay 10 ms
>> > loop 45 delay 10 ms
>> > loop 46 delay 10 ms
>> > loop 47 delay 10 ms
>> > loop 48 delay 10 ms
>> > loop 49 delay 10 ms
>> > loop 50 delay 10 ms
>> > loop 51 delay 10 ms
>> > loop 52 delay 11 ms
>> > loop 53 delay 10 ms
>> > loop 54 delay 10 ms
>> > loop 55 delay 10 ms
>> > loop 56 delay 10 ms
>> > loop 57 delay 10 ms
>> > loop 58 delay 10 ms
>> > loop 59 delay 10 ms
>> > loop 60 delay 10 ms
>> > loop 61 delay 10 ms
>> > loop 62 delay 11 ms
>> > loop 63 delay 10 ms
>> > loop 64 delay 10 ms
>> > loop 65 delay 11 ms
>> > loop 66 delay 10 ms
>> > loop 67 delay 10 ms
>> > loop 68 delay 10 ms
>> > loop 69 delay 10 ms
>> > loop 70 delay 10 ms
>> > loop 71 delay 10 ms
>> > loop 72 delay 11 ms
>> > loop 73 delay 10 ms
>> > loop 74 delay 10 ms
>> > loop 75 delay 10 ms
>> > loop 76 delay 11 ms
>> > loop 77 delay 10 ms
>> > loop 78 delay 10 ms
>> > loop 79 delay 10 ms
>> > loop 80 delay 11 ms
>> > loop 81 delay 10 ms
>> > loop 82 delay 10 ms
>> > loop 83 delay 10 ms
>> > loop 84 delay 10 ms
>> > loop 85 delay 10 ms
>> > loop 86 delay 10 ms
>> > loop 87 delay 10 ms
>> > loop 88 delay 10 ms
>> > loop 89 delay 10 ms
>> > loop 90 delay 10 ms
>> > loop 91 delay 10 ms
>> > loop 92 delay 10 ms
>> > loop 93 delay 10 ms
>> > loop 94 delay 10 ms
>> > loop 95 delay 10 ms
>> > loop 96 delay 10 ms
>> > loop 97 delay 10 ms
>> > loop 98 delay 10 ms
>> > loop 99 delay 10 ms
>> > total time = 1035 ms
>> >
>> >
>> >
>> >
>> >
>> >
>> > --
>> > Best Regards,
>> > Haosdent Huang
>>
>>
>>
>>
>> --
>> Best Regards,
>> Haosdent Huang
>
>
>
>
> --
> Best Regards,
> Haosdent Huang
