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kdb

adding tplog writing ability to chained TP

I am trying to make Chained TP to write tplog file as well.

However, what i can see from the process log is l every second. refer to this link:https://github.com/KxSystems/kdb/blob/master/tick/chainedtick.q in the shell script i already pointed out which tp to subscribe.

I changed these two functions:

if[system"t";
 .z.ts:{.u.pub'[.u.t;value each .u.t];@[`.;.u.t;@[;`sym;`g#]0#]}; 
  upd:{[t;x] t insert x;if[l;l enlist (`upd;t;x);j+:1];}]

if[not system"t";  
   upd:{[t;x] .u.pub[t;x];if[l;l enlist (`upd;t;x);i+:1];}]

also added

  .u.tick[src;.z.x 1];

at the end.

still trying to figure out why nothing in the tplog?

Solution

  • .u.tick (or .u.l which is defined in .u.tick) are not defined in chainedtp.q. .u.tick can be found in tick.q.

    AquaQ Analytics' TorQ infrastructure has a chained TP process, which allows you to specify on startup whether you want a logfile to be created or not. More info can be found here. (Full disclaimer, I’m an employee of AquaQ).