Date: Mon, 8 Jul 2013 01:02:24 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: freebsd-performance@freebsd.org Cc: timur@FreeBSD.org Subject: Re: Samba server performance -- only 33MiB/s with one client on 1G network! Message-ID: <1885849141.20130708010224@serebryakov.spb.ru> In-Reply-To: <866737084.20130707233704@serebryakov.spb.ru> References: <866737084.20130707233704@serebryakov.spb.ru>
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Hello, Lev. You wrote 7 =D0=B8=D1=8E=D0=BB=D1=8F 2013 =D0=B3., 23:37:04: LS> So, smbd is NOT limited by: LS> (1) FS (33MiB/s vs 280MiB/s). LS> (2) Network (33MiB/s vs 820Mbit/s / 97MiB/s). LS> (3) CPU (50% vs 100%, CPU is 150% idle!). LS> Why samba performacne is so loosy? What could I've "ktrace" smbd process in question and see a lot of 67106 100935 smbd 0.003483 CALL geteuid 67106 100935 smbd 0.003485 RET geteuid 0 67106 100935 smbd 0.003487 CALL getegid 67106 100935 smbd 0.003490 RET getegid 0 67106 100935 smbd 0.003493 CALL __sysctl(0x7fffffffd130,0x2,0x7ffffff= fd14c,0x7fffffffd140,0,0) 67106 100935 smbd 0.003496 SCTL "kern.ngroups" 67106 100935 smbd 0.003500 RET __sysctl 0 67106 100935 smbd 0.003503 CALL setgroups(0x2,0x804c45280) 67106 100935 smbd 0.003506 RET setgroups 0 67106 100935 smbd 0.003509 CALL setregid(0xffffffff,0) 67106 100935 smbd 0.003513 RET setregid 0 67106 100935 smbd 0.003516 CALL getegid 67106 100935 smbd 0.003518 RET getegid 0 67106 100935 smbd 0.003521 CALL setreuid(0xffffffff,0) 67106 100935 smbd 0.003525 RET setreuid 0 67106 100935 smbd 0.003529 CALL geteuid 67106 100935 smbd 0.003543 RET geteuid 0 sequences, really, there is (for 60 seconds of dump): 2131018 geteuid calls (35516 calls/s) 2130595 getegid calls (35509 calls/s) 959106 setreuid calls (15985 calls/s) 959082 setregid calls (15984 calls/s) 957925 __sysctl calls (15965 calls/s) It looks strange to me! And very ineffective! --=20 // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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