As Andrew said, in this case EGAIN and EWOULDBLOCK are the same errno. You can look in /usr/include/asm/errno.h and see they are equal. (At least on my system :) )
Ryan > Okay, thanks :-) > > On Wed, Jan 7, 2009 at 11:56 PM, Andrew Armstrong > <[email protected]>wrote: > >> There are several error codes that basically say 'try again later' for >> async >> i/o - so yes these are normal. >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Tony >> Paloma >> Sent: Thursday, 8 January 2009 9:48 AM >> To: 'Half-Life dedicated Linux server mailing list' >> Subject: Re: [hlds_linux] strace -p on HLDS. Is it normal communicate? >> >> Should be EWOULDBLOCK is what I meant, not shouldn't. >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Tony >> Paloma >> Sent: Wednesday, January 07, 2009 2:46 PM >> To: [email protected]; 'Half-Life dedicated Linux server mailing >> list' >> Subject: Re: [hlds_linux] strace -p on HLDS. Is it normal communicate? >> >> I thought this too, but it shouldn't be EWOULDBLOCK not EAGAIN. >> >> -----Original Message----- >> From: [email protected] >> [mailto:[email protected]] On Behalf Of Ryan >> Burke >> Sent: Wednesday, January 07, 2009 12:18 PM >> To: Half-Life dedicated Linux server mailing list >> Subject: Re: [hlds_linux] strace -p on HLDS. Is it normal communicate? >> >> My educated guess is that they are using non-blocking calls to recvfrom >> using the MSG_DONTWAIT flag. Normally recv and recvfrom will block until >> data is received. This stops the flow of the program unless it is >> multi-threaded with on thread dealing with network I/O and some kind of >> parent thread to do something when network I/O occurs. Look at the >> MSG_DONTWAIT in "man recvfrom" and it explains it. It is a pretty common >> way to do high performance asynchronous network programming. >> >> Ryan >> >> > sorry it's much faster than 10 times per second, my terminal is slow. >> > first that I posted is on >> > 1231356114, 376819 >> > second >> > 1231356114, 378804 >> > that is every ~2000 microseconds so ~500/s and that server is stable >> > 500fps, so it happens every frame. >> > >> > Kveri >> > >> > Kveri wrote / napísal(a): >> >> I don't know if it is normal, but I can confirm that it's happening. >> >> >> >> recvfrom(4, 0xfff4ebb4, 4010, 0, 0xfff4fb60, 0xfff4eb9c) = -1 EAGAIN >> >> (Resource temporarily unavailable) >> >> gettimeofday({1231356114, 376819}, NULL) = 0 >> >> gettimeofday({1231356114, 376846}, NULL) = 0 >> >> gettimeofday({1231356114, 376873}, NULL) = 0 >> >> gettimeofday({1231356114, 376900}, NULL) = 0 >> >> gettimeofday({1231356114, 376928}, NULL) = 0 >> >> gettimeofday({1231356114, 376953}, NULL) = 0 >> >> gettimeofday({1231356114, 376976}, NULL) = 0 >> >> select(5, [4], NULL, NULL, {0, 1000}) = 0 (Timeout) >> >> select(1, [0], NULL, NULL, {0, 0}) = 0 (Timeout) >> >> gettimeofday({1231356114, 377713}, NULL) = 0 >> >> gettimeofday({1231356114, 377738}, NULL) = 0 >> >> select(5, [4], NULL, NULL, {0, 1000}) = 0 (Timeout) >> >> select(1, [0], NULL, NULL, {0, 0}) = 0 (Timeout) >> >> gettimeofday({1231356114, 378711}, NULL) = 0 >> >> gettimeofday({1231356114, 378738}, NULL) = 0 >> >> recvfrom(4, 0xfff4ebb4, 4010, 0, 0xfff4fb60, 0xfff4eb9c) = -1 EAGAIN >> >> (Resource temporarily unavailable) >> >> gettimeofday({1231356114, 378804}, NULL) = 0 >> >> gettimeofday({1231356114, 378831}, NULL) = 0 >> >> gettimeofday({1231356114, 378855}, NULL) = 0 >> >> gettimeofday({1231356114, 378878}, NULL) = 0 >> >> gettimeofday({1231356114, 378902}, NULL) = 0 >> >> gettimeofday({1231356114, 378925}, NULL) = 0 >> >> gettimeofday({1231356114, 378949}, NULL) = 0 >> >> select(0, NULL, NULL, NULL, {0, 1000}) = 0 (Timeout) >> >> select(1, [0], NULL, NULL, {0, 0}) = 0 (Timeout) >> >> gettimeofday({1231356114, 379714}, NULL) = 0 >> >> gettimeofday({1231356114, 379739}, NULL) = 0 >> >> recvfrom(4, 0xfff4ebb4, 4010, 0, 0xfff4fb60, 0xfff4eb9c) = -1 EAGAIN >> >> (Resource temporarily unavailable) >> >> gettimeofday({1231356114, 379803}, NULL) = 0 >> >> gettimeofday({1231356114, 379829}, NULL) = 0 >> >> gettimeofday({1231356114, 379855}, NULL) = 0 >> >> ^C <unfinished ...> >> >> Process 31734 detached >> >> >> >> Maybe 10 times per second or so >> >> >> >> OS: Gentoo 64 >> >> 2x Quad Xeon, 8GB RAM >> >> conn: 1GBit >> >> >> >> Kveri >> >> >> >> Pawel wrote / napísal(a): >> >> >> >>> Hi, >> >>> >> >>> I'm starting new hlds process with -game cstrike etc. Normal clear >> CS >> >>> 1.6 >> >>> server. >> >>> Next what i'm going to do is strace command on this process. >> >>> >> >>> So while using strace -p 3535353... I got many times: >> >>> >> >>> recvfrom(4, 0xfff43114, 4010, 0, 0xfff440c0, 0xfff430fc) = -1 EAGAIN >> >>> (Resource temporarily unavailable) >> >>> >> >>> It is normal? >> >>> My OS is Slamd64 >> >>> and hardware: >> >>> 2x Xeon Quad-Core, 4GB RAM >> >>> Internet connection: 100mbit up/down >> >>> >> >>> Thanks >> >>> _______________________________________________ >> >>> To unsubscribe, edit your list preferences, or view the list >> archives, >> >>> please visit: >> >>> http://list.valvesoftware.com/mailman/listinfo/hlds_linux >> >>> >> >>> >> >>> >> >> >> >> _______________________________________________ >> >> To unsubscribe, edit your list preferences, or view the list >> archives, >> >> please visit: >> >> http://list.valvesoftware.com/mailman/listinfo/hlds_linux >> >> >> >> >> > >> > _______________________________________________ >> > To unsubscribe, edit your list preferences, or view the list archives, >> > please visit: >> > http://list.valvesoftware.com/mailman/listinfo/hlds_linux >> > >> >> >> _______________________________________________ >> To unsubscribe, edit your list preferences, or view the list archives, >> please visit: >> http://list.valvesoftware.com/mailman/listinfo/hlds_linux >> >> >> _______________________________________________ >> To unsubscribe, edit your list preferences, or view the list archives, >> please visit: >> http://list.valvesoftware.com/mailman/listinfo/hlds_linux >> >> >> _______________________________________________ >> To unsubscribe, edit your list preferences, or view the list archives, >> please visit: >> http://list.valvesoftware.com/mailman/listinfo/hlds_linux >> >> >> _______________________________________________ >> To unsubscribe, edit your list preferences, or view the list archives, >> please visit: >> http://list.valvesoftware.com/mailman/listinfo/hlds_linux >> > _______________________________________________ > To unsubscribe, edit your list preferences, or view the list archives, > please visit: > http://list.valvesoftware.com/mailman/listinfo/hlds_linux > _______________________________________________ To unsubscribe, edit your list preferences, or view the list archives, please visit: http://list.valvesoftware.com/mailman/listinfo/hlds_linux
