[Disksim-users] Saturation in DISKSIM_malloc()

[Lanyue Lu]

Hi,

In disksim_logorg.c, there is a macro: MAX_QUEUE_LENGTH 100000, which is the limit of the number of outstanding 
request in the system.

If you request rate is too high, after some time, the number of outstanding requests will be bigger than 100000, 
then you get the error.

The source code related to this is in the function: "static void logorg_mapreqeust_update_stats() " in disksim_logorg.c.

Lanyue Lu

Rice University



-------------------------------------------------------------
发件人：Zhe Zhang
发送日期：2007-10-25 16:01:09
收件人：disksim-users at ece.cmu.edu
抄送：
主题：[Disksim-users] Saturation in DISKSIM_malloc()

Hi,

I'm using DiskSim-2.0 with the "Seagate Cheetah 9LP" disk listed on
the DiskSim website.
It works fine with some traces, but for some other more intensive
traces (intervals b/w
requests are short), it gives me a lot of "Stopping simulation because
of saturation" error
messages, and the simulation finally stops running.

I tried allocating more space for disksim by using a larger number for
the 2nd parameter
of the function disksim_interface_initialize(disk, len, paramFile,
outFile), but still the saturation
errors will kill the simulation. The difference is, if I use larger
len value, more saturation error
messages will be printed before the simulation is stopped.

Thanks for any help/suggestions.

Zhe Zhang
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