Date: Sun, 18 Apr 2004 21:34:36 +0200 From: Ivan Voras <ivoras@geri.cc.fer.hr> To: Robert Watson <rwatson@FreeBSD.org> Cc: freebsd-threads@FreeBSD.org Subject: Re: siege and libpthread Message-ID: <4082D84C.2010001@geri.cc.fer.hr> In-Reply-To: <Pine.NEB.3.96L.1040418134149.8431K-100000@fledge.watson.org> References: <Pine.NEB.3.96L.1040418134149.8431K-100000@fledge.watson.org>
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Robert Watson wrote:
> (1) libthr.so substituition via libmap.conf.
> (2) linuxthreads substitution -- not sure if that can be done with
> libmap.conf.
I don't think linuxthreads can be done with libmap, and even if it does,
I can't do it for another couple of weeks...
With libthr it's the same. During the test I noticed in 'top' somewhat
strange differences in time spent in the 'system' mode. Running under
/usr/bin/time confirms that:
============= libthr:
alfredo:~> /usr/bin/time -hlp siege -c20 -t1m -d1 -f web_list
** Siege 2.59
** Preparing 20 concurrent users for battle.
The server is now under siege...time: command terminated abnormally
real 19.88
user 0.76
sys 1.65
3700 maximum resident set size
55 average shared memory size
997 average unshared data size
137 average unshared stack size
700 page reclaims
0 page faults
0 swaps
1 block input operations
4 block output operations
501 messages sent
7463 messages received
0 signals received
3261 voluntary context switches
13445 involuntary context switches
Segmentation fault
============= libpthread:
alfredo:~> /usr/bin/time -hlp siege -c20 -t1m -d1 -f web_list
** Siege 2.59
** Preparing 20 concurrent users for battle.
The server is now under siege...time: command terminated abnormally
real 32.79
user 0.95
sys 0.66
4340 maximum resident set size
59 average shared memory size
1406 average unshared data size
145 average unshared stack size
902 page reclaims
0 page faults
0 swaps
33 block input operations
34 block output operations
995 messages sent
25512 messages received
0 signals received
25287 voluntary context switches
5625 involuntary context switches
Segmentation fault
============= libc_r:
alfredo:~> /usr/bin/time -hlp siege -c20 -t1m -d1 -f web_list
** Siege 2.59
** Preparing 20 concurrent users for battle.
The server is now under siege...
Lifting the server siege... done.
Transactions: 1804 hits
Availability: 100.00 %
Elapsed time: 59.74 secs
Data transferred: 68221721 bytes
Response time: 0.14 secs
Transaction rate: 30.20 trans/sec
Throughput: 1141935.44 bytes/sec
Concurrency: 4.11
Successful transactions: 1804
Failed transactions: 0
real 59.78
user 1.40
sys 1.94
3884 maximum resident set size
50 average shared memory size
1031 average unshared data size
123 average unshared stack size
693 page reclaims
0 page faults
0 swaps
0 block input operations
0 block output operations
1808 messages sent
47267 messages received
311 signals received
44678 voluntary context switches
9919 involuntary context switches
But then again, those probably doesn't mean anything, because the
measurements are taken for different time periods.
--
C isn't that hard: void (*(*f[])())() defines f as an array of
unspecified size, of pointers to functions that return pointers to
functions that return void.
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