RE: Linux timers

Hello Yaniv,
    My two cents ... I work on an application that needs timers ... these
timers need not timeout at the exact milli/microsecond but need to timeout
at reasonable time intervals. So we implemented a timers mechanism that is
internal to the application. These timers are decremented based on a
function call that is called every once in a while by the application main
thread. Once the timer reaches zero, the function associated with the timer
is called. These function could be just plain c functions or could be more
complex C++ member functions (based on the way the timers are implemented)
... Though my application is single threaded, this kind of timer
implementation allows me to time slice for each module in my application.
Therefore if one module take forever to come out of the timer function, it
holds up the timer mechanism. You could be more adventurous and try a multi
threaded implementation.

regards
Saravanan
  -----Original Message-----
  From: [email protected]
[mailto:[email protected]]On Behalf Of Yaniv Weizman
  Sent: Sunday, October 10, 2004 3:27 AM
  To: [email protected]
  Cc: Niv; Alon
  Subject: Linux timers


  Hello,

  We are developing high load application which handles thousands of
transactions.

  For each user transaction we should set a low resolution (seconds) timer
for transaction maintenance - means lot of kernel concurrent timers.

  Can we simply use the Linux kernel timer system without overload the
kernel performance, or we should set our own timer wheel mechanism for
handling such a big number of timers?

  Regards,

  Yaniv.



  Weizman Yaniv

  Communication Senior Engineer

  (Tel: +972-3-6349990 ext. 211

  EFax: +972-3-6349910

  ECellular: +972-54-8100088

  E-mail: [email protected]

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