[tesla-dev] Tickless Callout - Design doc, Webrev and BFUs ready

[Madhavan Venkataraman]

anitha.majji wrote:
> Hi Madhavan,
>
> After applying   
> /net/steam.sfbay/builds/mv143129/callout-onnv/archives/sparc/bfu_1   
> on serengeti, it PANICs continuously after reboot.
> The non-debug 
> (/net/steam.sfbay/builds/mv143129/callout-onnv/archives/sparc/bfu_1-nd),  
> applied to starcat is coming up properly.
>
The Intel debug BFUs have also been built. The
path is as mentioned before.

BTW, can you share with me details on what you are evaluating
on the BFUS?

Madhavan
> Serengeti system details are:    Hostname:  burl-6900-1-a.east
>    Console:   telnet burl-6900-1.east  (console a)
>
> I left the system in Ok prompt.
>
> Following is panic message:
> ==========================================================
> panic[cpu519]/thread=180e000: assertion failed: (threadp())->t_preempt 
> > 0, file: ../../common/os/cyclic.c, line: 2936
>
> 000000000180b710 genunix:assfail+78 (134f678, 134e450, b78, 18cf000, 
> 1363c00, 0)  %l0-3: 00000000078c791f 000000000134f670 0000000000000038 
> 0000000000000038
>  %l4-7: 0000000000000118 0000000000000000 000000000192d000 
> 0000000000000000
> 000000000180b7c0 genunix:cyclic_reprogram+94 (60060061b68, ca386c1080, 
> 15345, 989680, 0, 1919c58)
>  %l0-3: 0000000000000000 0000000000000002 000000000134e400 
> 000000000134f400
>  %l4-7: 000000003925d63e 000000003b9aca00 000000000134e800 
> 7fffffffffffffff
> 000000000180b870 genunix:callout_cpu_online+110 (300d3794000, 
> 60060061b68, 100, 2, 1, 0)
>  %l0-3: 0000000001132ccc 0000000001132c8c 0000000001917800 
> 7fffffffffffffff
>  %l4-7: 00000300d044a100 00000300d0442000 0000000000008100 
> 0000000000000102
> 000000000180b950 genunix:callout_mp_init+34 (180c000, 1917828, 
> 18aa518, 18b8000, 1917800, 18aa400)
>  %l0-3: 000000000000022e 0000000000000000 000000000190a800 
> 000000000191e400
>  %l4-7: 00000000018b81d8 00000300d3794000 00000000018aa518 
> 000000000180c000
> 000000000180ba00 genunix:main+2b4 (2, 485a3dbc, 1842800, 196ab08, 
> 1842928, 196a800)
>  %l0-3: 000000000180e440 000000000113326c 0000000001842800 
> 0000000001969c00
>  %l4-7: 0000000001969c00 000000000180c000 0000000000000001 
> 0000000001969c00
>
> syncing file systems...Jun 19 04:12:45 burl-6900-1-sc0 Domain-A.SC: 
> Active - Panicking
> [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] [1] 
> [1] [1] [1] [1] done (not all i/o completed)
> ==========================================================
>
> Thanks
> -Pradeep
>
> Madhavan Venkataraman wrote:
>> Team,
>>
>> Here is Release 1 of Tickless Callouts.
>>
>> Release 1
>> ---------
>>
>> This release consists of all the code changes as of the end of the
>> implementation phase. Basically, this is the initial implementation.
>> This need to be unit tested, QE tested and evaluated for performance.
>> Some preliminary performance studies show good scalability for
>> realtime timers.
>>
>> Design doc:
>>
>> http://esp.west/~mv143129/tickless_callouts/Nevada/callout_design_1.txt
>>
>> BFUs:
>>
>> /net/steam.sfbay/builds/mv143129/callout-onnv/archives/sparc/bfu_1
>> /net/steam.sfbay/builds/mv143129/callout-onnv/archives/sparc/bfu_1-nd
>> /net/steam.sfbay/builds/mv143129/callout-onnv/archives/i386/bfu_1
>> /net/steam.sfbay/builds/mv143129/callout-onnv/archives/i386/bfu_1-nd
>>
>> webrev:
>>
>> http://esp.west/~mv143129/tickless_callouts/Nevada/webrev_1/
>>
>> The design document has undergone some revision. I have added more 
>> information
>> and modified existing information. I have removed all the code from it
>> as I am providing a webrev anyway. So, please review the design doc
>> and let me know if you have any questions or comments.
>>
>> Feel free to try the BFUs. These are based on Nevada 89.
>>
>> Madhavan