From: "Doug Bissett" Received: from [192.168.100.201] (HELO mail.2rosenthals.com) by 2rosenthals.com (CommuniGate Pro SMTP 5.4.10) with ESMTPS id 2814169 for virtualized_ecs_users@2rosenthals.com; Fri, 10 Dec 2021 12:22:01 -0500 Received: from secmgr-va.2rosenthals.com ([50.73.8.217]:52461 helo=mail2.2rosenthals.com) by mail.2rosenthals.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mvjaj-0004Am-0p for virtualized_ecs_users@2rosenthals.com; Fri, 10 Dec 2021 12:21:53 -0500 Received: from [209.205.66.92] (port=33395 helo=ben.ocii.com) by mail2.2rosenthals.com with esmtps (TLS1.2) tls TLS_DHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mvjaf-0004az-21 for virtualized_ecs_users@2rosenthals.com; Fri, 10 Dec 2021 12:21:50 -0500 Received: from IREBBS7 (xx194129111.cipherkey.com [207.194.129.111] (may be forged)) by ben.ocii.com (8.15.1+Sun/8.12.9) with ESMTP id 1BAHKome025248 for ; Fri, 10 Dec 2021 10:20:50 -0700 (MST) X-SASI-Hits: BODYTEXTP_SIZE_3000_LESS 0.000000, BODY_SIZE_2000_2999 0.000000, BODY_SIZE_5000_LESS 0.000000, BODY_SIZE_7000_LESS 0.000000, DATE_TZ_NA 0.000000, HTML_00_01 0.050000, HTML_00_10 0.050000, IN_REP_TO 0.000000, LEGITIMATE_SIGNS 0.000000, MSG_THREAD 0.000000, NO_CTA_URI_FOUND 0.000000, NO_URI_HTTPS 0.000000, REFERENCES 0.000000, REPLYTO_SAMEAS_FROM 0.000000, SENDER_NO_AUTH 0.000000, SUPERLONG_LINE 0.050000, __ANY_URI 0.000000, __BODY_NO_MAILTO 0.000000, __BOUNCE_CHALLENGE_SUBJ 0.000000, __BOUNCE_NDR_SUBJ_EXEMPT 0.000000, __CT 0.000000, __CTE 0.000000, __CT_TEXT_PLAIN 0.000000, __DQ_NEG_HEUR 0.000000, __DQ_NEG_IP 0.000000, __FORWARDED_MSG 0.000000, __FRAUD_PARTNERSHIP 0.000000, __FUR_HEADER 0.000000, __HAS_FROM 0.000000, __HAS_MSGID 0.000000, __HAS_REFERENCES 0.000000, __HAS_REPLYTO 0.000000, __HAS_X_MAILER 0.000000, __IN_REP_TO 0.000000, __MAIL_CHAIN 0.000000, __MIME_TEXT_ONLY 0.000000, __MIME_TEXT_P 0.000000, __MIME_TEXT_P1 0.000000, __MIME_VERSION 0.000000, __NO_HTML_TAG_RAW 0.000000, __REFERENCES 0.000000, __REPLYTO_SAMEAS_FROM 0.000000, __REPLYTO_SAMEAS_FROM_ACC 0.000000, __REPLYTO_SAMEAS_FROM_ADDY 0.000000, __REPLYTO_SAMEAS_FROM_DOMAIN 0.000000, __REPLYTO_SAMEAS_FROM_NAME 0.000000, __SANE_MSGID 0.000000, __SUBJ_ALPHA_NEGATE 0.000000, __SUBJ_REPLY 0.000000, __TO_MALFORMED_2 0.000000, __TO_NAME 0.000000, __TO_NAME_DIFF_FROM_ACC 0.000000, __TO_REAL_NAMES 0.000000, __URI_NO_MAILTO 0.000000, __URI_NO_WWW 0.000000, __URI_NS 0.000000, __USER_AGENT 0.000000 X-SASI-Probability: 8% X-SASI-RCODE: 200 X-SASI-Version: Antispam-Engine: 4.1.4, AntispamData: 2021.12.10.164517 X-SASI-Hits: BODYTEXTP_SIZE_3000_LESS 0.000000, BODY_SIZE_2000_2999 0.000000, BODY_SIZE_5000_LESS 0.000000, BODY_SIZE_7000_LESS 0.000000, DATE_TZ_NA 0.000000, HTML_00_01 0.050000, HTML_00_10 0.050000, IN_REP_TO 0.000000, LEGITIMATE_SIGNS 0.000000, MSG_THREAD 0.000000, NO_CTA_URI_FOUND 0.000000, NO_URI_HTTPS 0.000000, REFERENCES 0.000000, REPLYTO_SAMEAS_FROM 0.000000, SENDER_NO_AUTH 0.000000, SUPERLONG_LINE 0.050000, __ANY_URI 0.000000, __BODY_NO_MAILTO 0.000000, __BOUNCE_CHALLENGE_SUBJ 0.000000, __BOUNCE_NDR_SUBJ_EXEMPT 0.000000, __CT 0.000000, __CTE 0.000000, __CT_TEXT_PLAIN 0.000000, __DQ_NEG_HEUR 0.000000, __DQ_NEG_IP 0.000000, __FORWARDED_MSG 0.000000, __FRAUD_PARTNERSHIP 0.000000, __FUR_HEADER 0.000000, __HAS_FROM 0.000000, __HAS_MSGID 0.000000, __HAS_REFERENCES 0.000000, __HAS_REPLYTO 0.000000, __HAS_X_MAILER 0.000000, __IN_REP_TO 0.000000, __MAIL_CHAIN 0.000000, __MIME_TEXT_ONLY 0.000000, __MIME_TEXT_P 0.000000, __MIME_TEXT_P1 0.000000, __MIME_VERSION 0.000000, __NO_HTML_TAG_RAW 0.000000, __REFERENCES 0.000000, __REPLYTO_SAMEAS_FROM 0.000000, __REPLYTO_SAMEAS_FROM_ACC 0.000000, __REPLYTO_SAMEAS_FROM_ADDY 0.000000, __REPLYTO_SAMEAS_FROM_DOMAIN 0.000000, __REPLYTO_SAMEAS_FROM_NAME 0.000000, __SANE_MSGID 0.000000, __SUBJ_ALPHA_NEGATE 0.000000, __SUBJ_REPLY 0.000000, __TO_MALFORMED_2 0.000000, __TO_NAME 0.000000, __TO_NAME_DIFF_FROM_ACC 0.000000, __TO_REAL_NAMES 0.000000, __URI_NO_MAILTO 0.000000, __URI_NO_WWW 0.000000, __URI_NS 0.000000, __USER_AGENT 0.000000 X-SASI-Probability: 8% X-SASI-RCODE: 200 X-SASI-Version: Antispam-Engine: 4.1.4, AntispamData: 2021.12.10.164517 Message-ID: <100.58df09004a8cb361.007@ocii.com> To: "Virtualized eCS Users Mailing List" Date: Fri, 10 Dec 2021 10:20:10 -0700 (MST) Reply-To: "Doug Bissett" In-Reply-To: References: Priority: Normal User-Agent: PMMail/3.26 (os/2; U; Warp 4.5; en-CA; i386; ver 3.26.00.1995) X-Mailer: PMMail 3.26.00.1995 for OS/2 Warp 4.5 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: Re: [Virtualized eCS] Vbox question and cores (AOS 503) On 2021-12-10, at 15:04:59, Massimo S. wrote: > > > > Il 09/12/2021 21:16, Doug Bissett ha scritto: > >On 2021-12-09, at 20:20:28, Massimo S. wrote: > >> > >>Hi all, > >> > >>is it possible to give 3 or 5 cores to an AOS503 guest VM? > >> > >>thanks > >> > >>massimo > >Yes. AFAIK, you can use up to the number of real cores. HOWEVER, using more than one core will cause problems, > why? > never had one with ACPI > my production servers use 1, 2 or 4 cores, i never had one hang or trap > > >and it will likely not make much difference in performance (it makes very little difference when running a XP, or win 7, > guests). > > no, sorry, they do if you are using real world production servers > > >>From what I see, VBox uses support similar to Hyper Threading, and Hyper Threading is not very friendly to OS/2. > >Try it, and see what happens. I suspect that it will hang after a short period. I haven't tried it for a couple of years, something > may have changed (but I doubt it). > > my production servers use 1, 2 or 4 cores, i never had a trap or hang or whatever > my only doubt was MP (3,5,7) not SMP number of cores > > you didn't try that > ok, thanks anyway > > massimo I think you misunderstood. The VBox HOST can run under any number of cores (including Hyper Threading). Using the setting in VBox to use more than one core for an OS/2 GUEST will cause trouble because VBox seems to use the same thing that Hyper Threading uses. Hyper Threading is not completely compatible with the OS/2 job scheduler, and it will, cause OS/2 to hang, eventually (usually sooner, than later). My comments about XP and 7, were about using multiple processors in the GUEST. It makes very little difference over running them with a single processor configured, but that may depend on exactly what you are doing with them. -- **************************** From Doug Bissett's ArcaOS system dougb007 AT ocii.com **************************** ... PROGRAM: n. used to turn valid data into error messages