Re: [Firebird-devel] overload system CPU

[Roman S. <rom...@re...>]

>> There is a performance problem in Firebird-2.1.0.15199-Alpha1 on Classic
>> Architerture.
>>     
>
>     What is your OS ?
>   
Windows XP SP2.
>   
>> When 5 stored procedures runs FB acts very slow.
>>     
> ...
>   
>> I used a profiler to find out what's the problem and these are results:
>>
>> Routine Name           Time        Hit Count
>> _switchToThread       110494,94    510463786
>> wait_for_request       2276,10        28165
>> ISC_event_wait         1483,23        68987
>> enterFastMutex         69,65        261523
>> PIO_write              64,29        17391
>> Firebird::Mutex::enter 31,47        1270326
>> lockSharedSection      30,06        543196
>>
>> Reverting isc_sync.cpp to 1.103 version and isc.h to 1.28 allow firebird
>> to work normal.
>>     
>
>     I'll check it
>
> Regards,
> Vlad
>
>   
Roman